Baumer Ident OISL-LSRSER Identification System User Manual Manual
Baumer Ident GmbH Identification System Manual
Manual
OIS-L OIS-L RF/ID System Read/Write – Short Range System Manual Contents Reg. Nr. LM.0401.EN Issue 1 / April 2002 - Friday, 26. April 2002 Baumer Ident GmbH, Hertzstrasse 10, D-69469 Weinheim, Deutschland, Tel +49 6201 9957-0, Fax +49 6201 9957-99 www.baumerident.com Subject to alteration without prior notice. © Copyright Baumer Ident GmbH 2002 Printed in Germany Baumer Ident GmbH Read/Write Short R ange System Manual Page 2 of 59 Contents Table of Contents 1 Safety precautions .............................................................................................. 7 2 Foreword.............................................................................................................. 11 2.1 General Information........................................................................................ 11 2.2 FCC rules for the USA .....................................................................................11 2.3 Central units covered by this manual............................................................. 11 2.4 Documents av ailable ......................................................................................12 2.5 Available Central Units ...................................................................................13 3 System description ...........................................................................................15 3.1 Introduction....................................................................................................15 3.2 System Principles ..........................................................................................15 3.3 Typical System Configuration ........................................................................16 3.4 Part Number Identification (Type) ...................................................................17 3.5 Basic Functionality Ov erview .........................................................................18 4 System Components ........................................................................................19 4.1 Central units...................................................................................................19 4.1.1 Common Technical Details of Central Units..............................................19 4.1.1.1. Electronic Design ....................................................................... 19 Electronic Design – Multiplexer Extension ................................................ 20 4.1.1.2.1. Common parts of every central unit ...................................20 4.1.1.2.2. Communication modules...................................................21 4.1.2 77LA04/2-SER, -MD, -ET, -DP ................................................................22 4.1.2.1. Connector pin assignment........................................................... 22 4.1.2.1.1. Power supply, Terminal and Digital I/Os..............................22 4.1.2.1.2. Host interface...................................................................23 4.1.2.2. System Diagnostics.................................................................... 25 4.1.2.3. Technical Data ........................................................................... 26 Central Unit 77LA04/4 –SER, -DP ...................................................................27 4.1.3.1. Connector pin assignment........................................................... 27 4.1.3.1.1. Power supply, Terminal and Digital I/Os..............................27 4.1.3.1.2. Host interface...................................................................28 4.1.3.2. System Diagnostics.................................................................... 30 4.1.3.3. Technical Data ........................................................................... 31 4.1.4 Central Unit 77LA04/2-IBS .....................................................................32 4.1.4.1. Connector pin assignment........................................................... 32 4.1.4.1.1. Power supply, Terminal and Digital I/Os..............................32 Page 3 of 59 Read/Write Short R ange System Manual Baumer Ident GmbH Contents 4.1.4.1.2. Host interface .................................................................. 33 4.1.4.2. Status display of Interbus-S......................................................... 34 4.1.4.2.1. Monitor (77LA04-IBS only!)............................................... 35 4.1.4.3. System Diagnostics.................................................................... 35 4.1.4.4. Technical Data ........................................................................... 36 4.2 The Antennae................................................................................................. 37 4.2.1 Standard Frame Antennae ..................................................................... 38 4.2.1.1. Common data for all frame antennae........................................... 39 4.2.2 Special Antennae .................................................................................. 39 4.2.2.1. Common data for all special antennae......................................... 39 4.2.2.2. 77LS05 ..................................................................................... 39 4.2.2.3. 77LS06 ..................................................................................... 39 4.2.2.4. 77LS07 ..................................................................................... 40 4.2.2.5. 77LS13 ..................................................................................... 40 4.2.2.6. 77LS14 ..................................................................................... 40 4.3 Data Tags ....................................................................................................... 41 4.3.1 Accessing Data Tags.............................................................................. 41 4.3.1.1. Basic Definitions......................................................................... 41 4.3.1.2. Read Only Tags.......................................................................... 41 4.3.1.3. 256 Bit Read/Write Tag Type....................................................... 42 4.3.1.4. 2kBit Read/Write Tag Type.......................................................... 42 5 Hints on Installation and System Design.................................................... 45 5.1 Basic considerations ..................................................................................... 45 5.2 The antenna lobe ........................................................................................... 45 5.3 Useful antenna field....................................................................................... 45 5.3.1 Width ∅ D and W and reading range at distance Ha ................................. 47 5.3.2 Operational Read/Write range Ha ........................................................... 47 5.3.3 Peak Read/Write range Hmax................................................................ 48 5.3.4 Static applications.................................................................................. 49 5.3.5 Dynamic applications............................................................................. 49 5.4 Calculating the Passing Speed ...................................................................... 49 5.4.1 Communication: Reader – Antenna – Data Tag ....................................... 50 5.4.1.1. Read Only Tag – 76LDxxx ......................................................... 50 5.4.1.2. General formulas for Read / Write Tag Types ............................... 50 5.4.2 Communication: Reader – Host (PC or PLC)........................................... 51 5.4.2.1. Serial communication time .......................................................... 51 5.4.3 Correlation of Passing Speed vs. Amount of Read/Write Data .................. 51 5.4.3.1. Component selection.................................................................. 51 5.5 Installation Guidelines ................................................................................... 53 5.5.1 Metal-free environment .......................................................................... 54 5.5.2 Mounting examples................................................................................ 55 5.5.3 Distance between antennae or tags........................................................ 56 Baumer Ident GmbH Read/Write Short R ange System Manual Page 4 of 59 Contents 5.6 EMC Guidelines..............................................................................................57 5.6.1 General.................................................................................................57 5.6.2 Shielding concept ..................................................................................57 6 FAQ’s.....................................................................................................................59 6.1 Digital Input / Trigger ......................................................................................59 6.2 Miscellaneous ................................................................................................59 Page 5 of 59 Read/Write Short R ange System Manual Baumer Ident GmbH Contents Baumer Ident GmbH Read/Write Short R ange System Manual Page 6 of 59 Safety prec autions 1 Safety precautions This product contains components that are sensitive to electrostatic discharges. Please observe the special instructions for their protection. Incorrect handling can damage the unit and cause the invalidation of the warranty. Minimum safety precautions against electrostatic discharge: • Establish earth contact before you touch the unit. For example, touch the earthing screw on the unit. even better: Use an antistatic ribbon and earth yourself permanently for the time you handle the unit. • Avoid unnecessary contact with the unit connectors and assemblies inside the unit. • Only open the unit if the operational settings (as described in the manual) expressly require this. • Use antistatic tools for the setting of the unit. (Warning: Do not touch life-threatening voltages with these tools). • Do not store unit and components without protective packaging. • Only remove unit and components from the packaging immediately prior to installation. These notes are not sufficient to guarantee complete protection from electrostatic discharges! We recommend the use of suitable protective equipment. Page 7 of 59 Read/Write Short R ange System Manual Baumer Ident GmbH Safety prec autions Connections / Power Supply Safety Instructions The system described in this manual is for exclusive operation by trained employees. Only qualified personnel that know the potential dangers involved should perform the installation, settings, maintenance and repair of the units used. Safety Documents This OIS-L system was designed, tested and supplied in perfect condition according to document IEC348 Safety Requirements for Electronic Units of Class 1. Operational Safety The correct and safe use of these systems assumes that operating and service personnel follow the safety measures described in the manual alongside the generally acceptable safety procedures. If there is a possibility that safe operation cannot be guaranteed the system must be switched off and secured against accidental use. Then the service unit responsible must be informed. The supply circuits must comply with the conditions set out for the SELV circuits (see EN60950). The signal circuits must comply with the conditions set out for the SELV circuits (see EN60950). Use screened cables for the power supply. This is the only way to achieve the prescribed EMC. During maintenance damage could occur if printed circuit boards or cables are connected or disconnected whilst the power supply is still on. Therefore only work on the connection and the components when they are not live. SELV – Safety Extra Low Voltage – Protective measure against dangerous body currents, formerly: protective first voltage range EMC – Electromagnetic Compatibility, Fuses Only experts who are aware of the dangers involved may replace the fuses. It must be ensured that only fuses of the required current rating and the correct type are used for replacement. The use of repaired fuses and/or shortcircuiting the fuse holders is prohibited. Condensing Water / Change of Temperature Moving the systems from a cold to a warm environment could lead to dangerous situations due to condensation. Therefore it must be ensured that the system can adjust itself to the warmer temperature. Opening the Cov ers or the Housing Do not open the housing. There is no need to open the housing in order to set the series 77 reader devices. The unit does not have any internal setting elements or displays. All settings are performed via the test terminal port. The internal parts of the unit, especially the printed circuit boards must be protected against oil, moisture and air contamination. When removing the protective covers make sure that no mechanical damage of the sensitive electronics occur or metal objects (nuts, washers, etc) fall into the unit. Therefore do not open the unit. Earthing Before establishing any connections the housing of the system must be earthed. Baumer Ident GmbH Spare Parts We recommend that only personnel, original products, spare and replacement parts authorised by Baumer Ident be used for installation, service and repair. Otherwise Baumer Ident does not accept any responsibility for materials used, work carried out or possible consequences. Electrostatic Discharges Semi-conductors of the type MOS or CMOS as well as two-pin types and precision resistance are extremely sensitive to ESD. All components, printed circuit boards and auxiliary systems should therefore always be classed as sensitive to electrostatic discharges. Before opening the cover the unit should be placed onto an ESD-protected surface. As with all work on modern electronic modules the use of ESD clamps and ESD mats during work on the unit is recommended. • Sufficiently protect all printed circuit boards that were removed from the unit from damage. Read/Write Short R ange System Manual Page 8 of 59 Safety prec autions • Observe all normal precautions for the use of tools. blies (electronic units and sensors) should be disconnected. • Use ESD-protected packaging material. Earth the test units. Never use measuring units with low impedance for measuring or testing systems with semiconductor components. Never use high voltage testing units or dielectric test units to test systems with semi-conductor components. Baumer Ident does not accept returns of products where the regulations concerning the ESD precautions and protective packaging materials were not followed. ESD – Electrostatic Discharge When it becomes necessary to check the isolating properties of the field wiring, the assem- Page 9 of 59 Read/Write Short R ange System Manual Baumer Ident GmbH Safety prec autions Baumer Ident GmbH Read/Write Short R ange System Manual Page 10 of 59 Foreword 2 Foreword 2.1 General Information 2.2 FCC rules for the USA This manual is intended to provide the user with assistance in product selection and project planning for the OIS-L Short Range inductive identification system. All relevant product data as well as guidelines for the correct product combinations and installation are included. Any changes or modifications of the OIS-L system not expressly approved by Baumer Ident could void the user's authority to operate the equipment. This description is valid for all different Read/Write devices of the OIS-L Series 77. A special controller like the PC-Card Read/Write device only supports the subset command set, presented in this document. News on products and applications for our identification systems are updated on a regular basis and are available under the following Internet address: http://www.baumerident.com The OIS-L system consisting of central unit 77LA04/2-SER and antennae 77LS03 complies with the rules of FCC. Only this system configuraton ist allowed to operate in USA. It ´s FCC ID is: PNTOIS-LSRSER The device complies with part 15 of the FCC rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. The connections to the antennae, to the power supply and to the host computer must be done with shielded cables. The antenna connector contains speciel parts to set the resonance of the antenna at 125 KHz.This can only be done by Baumer Ident in Weinheim. 2.3 Central units covered by this manual Central units for 2 antennae Designation Type Description Order code 77LA04/2-SER ZE.77.SR.02.11 serial interface RS232/422/485 configurable by user 9633-001-SER 77LA04/2-SER-ET ZE.77.SR.02.13 serial interface RS232/422/485 configurable by user, version for use at extended temperatures: -20 °C … 50 °C DD100039 77LA04/2-MD ZE.77.SR.02.12 serial interface pre-configured for RS485 mul- DD100116 tidrop use 77LA04/2-IBS ZE.77.SR.02.21 Interbus-S interface DD100110 77LA04/2-DP ZE.77.SR.02.31 Profibus DP interface 9633-001-DP Page 11 of 59 Read/Write Short R ange System Manual Baumer Ident GmbH Foreword Central units for 4 antennae Designation Type Interface Order code 77LA04/4-SER ZE.77.SR.04.11 serial interface RS232/422/485 configurable by user DD100129 77LA04/4-DP ZE.77.SR.04.31 Profibus-DP interface DD100173 77LA04/4-MD ZE.77.SR.04.12 serial interface pre-configured for RS485 mul- DD100201 tidrop use The central unit 77LA04/4 is an extension of the 77LA04/2 controller. This central unit can control up to four antennae in a multiplexing arrangement. Data Sheets 2.4 Documents available Manuals Central Units Short Range LM.0401.EN This document Central Units Short Range LD.0301.EN Central Units Long Range LD.0302.EN Interbus-S Interface LD.0303.EN Profibus-DP Interface LD.0304.EN Standard Antennae (Short Range) LD.0305.EN Standard Data Tags LD.0306.EN Standard Antennae (Long Range) LD.0307.EN Special Frame Antennae LD.0330.EN Central Units Long Range LM.0402.EN Antenna 77LS05 LD.0331.EN Interbus-S Interface LM.0403.EN Antenna 77LS06 LD.0332.EN Profibus-DP Interface LM.0404.EN Antenna 77LS07 LD.0333.EN Manual Handheld Reader 77HH03 LM.0405.EN Antenna 77LS14 LD.0334.EN Configuration Software Short LM.0406.EN Antenna 77LS13 LD.0335.EN Mounting of special Ring Data Tags LM.0407.EN Mounting of ring data tag into floor LM.0408.EN General papers Serial Interface LM.0409.EN Our company profile AB.0001.ED Quick Start Guide [ Long Range ] LM.0440.EN Technical Product Overview AB.0003.EN Baumer Ident GmbH Read/Write Short R ange System Manual Page 12 of 59 Foreword 2.5 Available Central Units Product designation Type Description 77LA04/2-SER ZE.77.SR.02.11 Central Unit, Read/Write, Short Range, for two Antennas, Serial interface RS232/422/485 configurable by user 77LA04/2-MD ZE.77.SR.02.12 Central Unit, Read/Write, Short Range, for two Antennas, Interface pre-configured for RS485 Multidrop use 77LA04/2-SER-ET ZE.77.SR.02.13 Central Unit, Read/Write, Short Range, for two Antennas, Serial interface RS232/422/485 configurable by user, Version for use at extended temperatures: -20°C ... 50°C 77LA04/4-SER ZE.77.SR.04.11 Central Unit, Read/Write, Short Range, for four Antennas, Serial interface RS232/422/485 configurable by user 77LA04/2-IBS ZE.77.SR.02.21 Central Unit, Read/Write, Short Range, for two Antennas, Glass Fibre Interbus Interface 77LA04/2-DP ZE.77.SR.02.31 Central Unit, Read/Write, Short Range, for two Antennas, Profibus DP Interface 77LA02-SER ZE.77.LR.01.11 Central Unit, Read/Write, Long Range, for one Antenna, Serial Interface RS232/422/485 configurable by user 77LA02-DP ZE.77.LR.01.31 Central Unit, Read/Write, Long Range, for one Antenna, Profibus DP Interface 76LA02-SER ZE.76.LR.01.11 Central Unit, Read-only, Long Range, for one Antenna, Serial Interface, RS232/422/485 76LA02-DP ZE.76.LR.01.31 Central Unit, Read-only, Long Range, for one Antenna, Profibus DP Interface 77HH03 ZE.77.HH.03 Handheld Unit, Read/Write, based on PSION workabout® or alternativelly with Barcode Scanner 77PC01 ZE.77.PC.01.91 PC Card Type II Unit, Read/Write, for one Antenna Page 13 of 59 Read/Write Short R ange System Manual Baumer Ident GmbH Foreword Baumer Ident GmbH Read/Write Short R ange System Manual Page 14 of 59 Sys tem description 3 System description 3.1 Introduction 3.2 System Principles The OIS-L Series 77 is an inductive identification system, generally referred to as RF-ID. It is intended for applications in logistics systems. The OIS-L standard system consists of three units: The OIS-L-system is a passive RF-system in the lower 125 kHz frequency band (ca. 125 kHz). • Transponder with a Read/Write memory • Antenna for energy and data transmission • Central unit with analogue and digital data processing The OIS-L Series 77 Standard Range RF-ID system is a family of products that have been developed to meet the market demands for industrial identification products with a high degree of modularity to solve a variety of tasks in logistics and other applications. The programmable data tag consists of a CMOSChip with an EEPROM memory and a coil. The reader, is made up of all of the components required for the transmission of energy and the reception of the demodulated signals from the tag. The energy is transmitted to the tag via an alternating magnetic field, analogous with the principle of a transformer. If a transponder comes within the useful area of the magnetic field it receives the required energy it is then ready to receive commands, to either store a code in memory or to send the contents of all or a part of the memory. System overview The signals are detected (demodulated) by an analogue circuit and passed on to the digital circuitry. Here the microprocessor and related software checks the data transmission, converts the code and in the event that the transmission was read the code is made available to the host computer for further data processing. and is particularly suited for industrial applications. The chip requires a field voltage of about 3,5V to become active. This tension is induced by the alternating magnetic field. The data transmission is done by means of an amplitude modulation, using the Manchester code. The detection of 32 full oscillations, indicates that one bit has been transmitted. This kind of data transmission is very insensitive to external disturbances from other electrical equipment Page 15 of 59 The reading distance is dependant on the power of the magnetic field and the exact frequency tuning (compare radio reception). Normally an up- Read/Write Short R ange System Manual Baumer Ident GmbH Sys tem description per limit for this technology is set at 1 meter (40") however for small tag/reader combinations these values are in the range 1 to 30 centimetres (0.5" - 12"). 3.3 Typical System Configuration the size and shape of a credit card. Although the majority of data tags would function in combination with any of the antennae, we have grouped them into logical groups highlighting the desired combinations, that enable the user to achieve tled information relating to the reading distances for the various antennae/tag combinations are shown later in this document. The OIS-L Series 77 Standard Range Read/Write system consists of the central unit 77LA04-X and one or two short range antennae (selected from the 77 Series Antenna range). The data tags can be either the fixed code type (series 76) or the Read/Write type (series 77): The Read/Write data tags come in two different memory sizes, 256 bit or 2 kbit. The following diagram shows an overview of the standard products in the Read/Write system. The data tags come in differing shapes, sizes, and housing materials. Some are coinshaped; others are packaged in PVC and are 76LA02-x Frame Antennae 77LS04, 77LS09 are also available for long range, read onl y, applications on request, call for special offers 76LS61 Or equivalent series 76 type Baumer Ident GmbH Or equivalent series 76 type Read/Write Short R ange System Manual 76LS62 Page 16 of 59 Sys tem description 3.4 Part Number Identification (Type) General form: $$.NN.$$.$$.$$, where $ is a letter, and N is a number. Explanation In order to have a structured part numbering system the following definitions apply. An existing part numbering system is already in circulation e.g. 77 LA04. These names are easy for the existing user to identify, however they are not always unique to a particular product. An example would be the part number 77LS03 this identifies an antenna but the version or tuning of this antenna is not included in this part number. Field No. Description $$ Class of component Possible Values ZE: Central unit AN: Antenna KA: Cable etc. System group 76: Read only System 77: Read/Write System $$ Subclass LR: Long Range SR: Short Range HH: Hand-held reader or related component PC: PC-Card Reader or related component $$ Product denomination 00 … 99 For antennae: Indicator for antenna size/geometry For central units (Field 1=ZE): Number of antennae connectors $$ Product modifi- 00 … 99 cations For antennae: Indicates modifications like special tuning, or special material etc., consecutively numbered For central units (Field 1 = ZE) First digit: 1: serial Interface 2: Interbus-S 3: Profibus-DP Second digit: indicates modification like different mounting holes, surface colour, special connectors, etc. Consecutively numbered $$ Always = DT, for data tag Indicates internal chip type 00: EM4102, read only 01: Hitag1, 2kBit 02: Hitag2, 256 bit 000 … 999 Related to coil size, tags with identical values in this field will have identical communication range within air Housing 00 … 99 For different materials or geometries, consecutively numbered Page 17 of 59 Read/Write Short R ange System Manual Baumer Ident GmbH Sys tem description 3.5 Basic Functionality Overview Basic functionality ov erview Central Unit Antenna Data Tags 77LA04/x-yy ZE.77.SR.xx.yy 77LS01 … 77LS14 AN.77.SR.xx.yy 76LDxxx-yy, 77LDxxx-yyy DT.0x.yyy.zz Short Range R/W Product designation: Type: Baumer Ident GmbH Read/Write Short R ange System Manual Page 18 of 59 Sys tem Components 4 System Components system always operates reliably. Direct mounting on vehicles in particular lift trucks is possible. 4.1 Central units The Baumer Ident short range inductive identification system OIS-L has been developed with respect to the regulation EN 300330 class 2. Thus, passive antennae connected to a central unit is the basic system concept. Antennae can be easily designed for customers request. No additional approbation or certification of the complete system is necessary. By the technique of multiplexing, some central units can handle more than one antenna. The high protection class of all central units make them ready to use within an industrial environment. Whether outdoor-use, rain or dust, the Various bus interfaces including high layer software facilitate the connection to host systems for engineers. The intelligent configuration software provides easy installation and system start-up by the customers qualified personnel. A special Baumer Ident feature is the possibility of automatic on-site antenna adjustment by software. This enables the optimisation of already installed systems whereby the environment is automatically considered by the adjustment process. The system works with EM4102, HiTag 1 and HiTag 2 chip transponders. 4.1.1 Common Technical Details of Central Units 4.1.1.1. Electronic Design Block diagram of the central unit 77LA04/2 Page 19 of 59 Read/Write Short R ange System Manual Baumer Ident GmbH Sys tem Components 4.1.1.2. Electronic Design – Multiplexer Extension 77LA04/4 77CU04 ANT1 (SC L DIN DOUT) ANT2 (SC L DIN DOUT) Se le ct Led1 Led2 77LP04 (1) 77MP01 A nt 1 A nt 1 A nt 3 A nt 2 A nt 2 A nt 4 IC1 Reader Asic IC2 Reader Asic Ant 1+2 Select A nt Led 1 A nt Led 3 Led 1 A nt Led A nt Led Led Led Led Led 2 Led3 Led4 Led5 IC1 Reader Asic Ant 3+4 IC2 Reader Asic Ohne Q2 77LP04 (2) Electronic Multiplexer 2:4 Controller CPU and HOST-Port Analogue RF boards 125kHz 4MHz quartz based Block diagram of the central unit 77LA04-04 4.1.1.2.1. Common central unit parts of every Power supply The processor board contains the power supply in the form of a galvanically separated DC-DC converter, operating between 18 and 36 V DC. The converter provides the different internal tensions for the analogue board, the COM-module and ancillary electronics. This converter is protected against polarisation errors. The digital inputs and outputs (I/Os) are optocoupled. The processor of the central unit handles the commands from a host computer (PC or PLC) as well as the data transfer to and from the antenna. This electronic circuitry consists of the following components: • Micro controller C515A-L24M or • Micro controller 80C515 • System memory 32 kByte RAM Analogue module The analogue module handles the energy transmission to the tag over the antenna and the demodulation of the data signals received from the data tag. The analogue board receives control signals, required for the communication with the data tag, from the processor board. The board contains two separate, identical circuits to handle two separate antennae. Programme memory Processor board A non-galvanically separated RS232 interface is provided for the configuration of the central unit. Digital I/Os The two galvanically separated digital inputs have a permissible input voltage of: Baumer Ident GmbH • 64 kByte EPROM This memory contains the programme for the system self-test and the operating system • Serial EEPROM 32 kByte This memory serves the purpose of storing the configuration data. The data may be altered via the terminal Read/Write Short R ange System Manual Page 20 of 59 Sys tem Components `1'-signal 16 ... 36 V (max. 10 mA) `0'-signal -2 ... +2 V The above is valid when using an input resistor of about 3kΩ . TxD (3) TA (6) A (6) GND (5) TB (7) B (7) RxD (2) RA (8) RB (9) The two galvanically separated digital outputs have an allowed switching voltage of: RS 232 10 ... 36 V / 0,05 A (50 mA) RS 422 RS 485 See also the following section for further details. Only one of these options may be connected at any given time. Terminal The terminal interface is used for system configuration and diagnostics purposes. It is intended to be connected to a personal computer running a terminal emulation software. The terminal is a RS232 interface. It is not galvanically separated (not opto-isolated). You must not connect any unused w ires! 77 COM-DP 4.1.1.2.2. Communication modules The communication modules make up the system interface between the reader and a host computer (PC or PLC). The system has automatic interface detection so that no setting is necessary. The communication module 77COM-DP integrates a Profibus-DP interface with maximally 12 Mbaud in the memory area of the processor. 77COM-SER 77COM-IBS The serial communication module 77COM-SER integrates a UART of the type 16C550 as a serial interface in the respective memory area of the processor. The driver-ICs are fed from a DC/DC converter via galvanically separated opto-couplers. They provide the following host interfaces: Page 21 of 59 upper connector IBS-OUT, lower connector IBS-IN Interbus module and integrated SUPI3 controller with 10 IBS words IN and 10 IBS words OUT. Connection with the OIS-L controller is via a serial interface. Read/Write Short R ange System Manual Baumer Ident GmbH Sys tem Components 4.1.2 77LA04/2-SER, -MD, -ET, -DP Di mensional drawing – 77LA04/2-SER, -SER-ET, -MD, -DP 4.1.2.1. Connector pin assignment The supply circuits must comply w ith the requirements of the SELV circuits (see EN60950). A screened cable must be used for the power supply. Only in that way the required EMC is achieved. SELV – Safety Extra Low Voltage – Protective measure against dangerous body currents. Protective first voltage, circuit not floating. Pin Signal description 1, 9 Power supply, 24 VDC, V+ 2, 10 Power supply, 0 VDC, V- 14 Digital input 1, anode, Digital input 1, cathode, - 13 Digital input 2, anode, Digital input 2, cathode, - 12 Digital output 1, collector, Digital output 1, emitter, Digital output 2, collector, Digital output 2, emitter, Terminal interface GND Terminal interface RxD 15 Terminal interface TxD EMC – Electromagnetic Compatibility 11 The signal circuits must comply w ith the requirements of the SELV circuits (see EN60950). SELV – Safety Extra Low Voltage – Protective measure against dangerous body currents. Protective first voltage, circuit not floating 4.1.2.1.1. Power supply, Terminal and Digital I/Os Terminal Interface On the 15-pin D-sub connector there is a terminal Interface RS232 available for service and diagnostic purposes. When the central unit is equipped with the Profibus-DP communication module 77COM-DP, the terminal interface is also used to set the correct Profibus slave address. Warning! The terminal Interface is not galvanically Separated! Baumer Ident GmbH Read/Write Short R ange System Manual Page 22 of 59 Sys tem Components Digital I/Os The two galvanically separated digital inputs have a permissible input voltage of: ‘1’-signal 16 … 36 V (max. 10 mA) Profibus DP host interface (in central unit 77LA04-DP only) The host interface corresponds to the Profibus-DP specifications. ‘0’-signal -2 … +2 V The above is valid when using an input resistor of about 3kΩ . The two galvanically separated digital outputs have an allowed switching voltage of: 10 … 36 V / 0,05 A (50 mA) Pin Name Signal description Shield Shield / Protective ground M24 Earth for 24 V voltage out RxD/TxD-P Receive / Transmit signals – positive CNTR-P Control signal for repeater – positive DGND Data ground (ground to VP) VP Voltage supply for the termination resistors (+5V) Signal description P24 voltage out 24V RS 232 RxD RxD/TxD-N RS 232 TxD Receive / Transmit – negative RS 232 GND CNTR-N RS 422 TA and RS 485 A Control signal for repeater – negative RS 422 TB and TS 485 B RS 422 RA TS 422 RB Cable parameters VTERM for RS 422 and RS 485 (max 20 mA) The bus cable is specified as cable type A within the standard EN50170 and can be applied according to the following table: 4.1.2.1.2. Host interface Serial host interface (in central unit 77LA04-SER only) Pin Figures in bold typeface are mandatory and must be provided by the user. You must not connect any unused w ires! Page 23 of 59 Parameter Cable A Wave resistance 135 .. 165 Ω Line Capacity < 30 pF/m Loop resistance 110 Ω /m Core diameter of the signal cable Ø 0,64 mm Core cross section > 0,34 mm² Read/Write Short R ange System Manual Baumer Ident GmbH Sys tem Components In adhering to the above parameters, the following distances for a bus segment (branch) can be achieved: Baudrate (Kbit/sec) Bus termination If cable A according to EN50170 is used, a resistor combination should be used as bus termination to warrant a defined potential on the line. Max. cable length 9.6 1,200 19.2 1,200 93.75 1,200 187.5 1,200 500 400 1500 200 12,000 100 Schematic of bus termination • Short branch cables (< 6,6 m) may be used up to 1.500 kbit/sec. • above this speed no branch cables should be used. The cable shield must be connected to the protective ground to prevent EMC disturbances from reaching into the central unit. The power supply to the termination resistors on pin 6 is only intended for that purpose and thus restricted to 10 mA. It is important that the connectors at both ends of the Profibus-DP cable are equipped with termination resistors. If this is not the case there may be problems with the transmission. Baumer Ident GmbH Read/Write Short R ange System Manual Page 24 of 59 Sys tem Components 4.1.2.2. System Diagnostics LED Description On the rear side of the controller there are 5 LED’s situated as shown in the diagram below: LED Layout on backpanel No. Signal name Function A1 – Antenna 1 active When lit, the antenna is active, executing a Read/Write command with a tag or the controller is waiting for a tag at this antenna (automatic Read/Write mode) A2 – Antenna 2 active ditto with antenna 2 R – RUN mode – flashing 1/2s A flashing LED indicates that the controller is running. When entering the Monitor – the LED stops flashing – the last LED state remains active until the normal program operation continues. Note: the Monitor program stops automatically on missing terminal inputs after about 30 seconds and the normal operation continues. Tx – Transmitting data The controller sends data via the host port (Serial or Profibus) – the LED is switched ON just before the data is put into the output FIFO buffer and switched OFF when the last character of data is placed in the communication device. Rx – Receiving data When the controller fetches a complete command from the communication device the LED switches ON. The LED switches OFF when the message receive has completed. With Profibus DP the LED switches ON at any change of the controller inputs state (CTL-octet) and switches OFF when the decoded command transfer to the command execution module (command parser) has completed. Hint: A flickering Rx-LED on Profibus without any flickering of the Tx-LED (for responses) indicates that the host does not handle the command handshake bits correctly – in this case refer to the section in this manual describing the CTL Bit Handshake Protocol. Page 25 of 59 Read/Write Short R ange System Manual Baumer Ident GmbH Sys tem Components 4.1.2.3. Technical Data Environmental Conditions The protection class IP65 is only v alid w hen protectiv e caps are fitted to the unused connectors and cables w ith sealed connectors are used. measured according to EN 60068-2-30 Operating Data Operating frequency 125 kHz Antenna type separate, series 77LSxx No. of antennae Data transfer speed 9600 baud (-SER) Interfaces Serial RS 232/422/485 9-pin D-Sub male Profibus-DP 9-pin D-Sub female Device addressing software command or dip-switch (optional) Temperature range 77LA04/2-ET 0 … +50 °C (Operating) -10 … +60 °C (Storage) -10 … +50 °C (Operating) Protection class IP 63 * Climate, Upper temperature +55 °C, 93 % rel. humidity Climate, Lower temperature +25 °C, 97 % rel. humidity Duration of climate test 2 cycles, 24 h each * IP65 when protective caps are fitted to the unused connectors and cables with sealed connectors are used. Vibration test IEC 68 Part 2-6 Wave type Sine form Frequency band 2 – 500 Hz Amplitude 2 – 8 Hz 7,53 mm peak./peak. Electrical Data Supply voltage 24 VDC ±10% 8 – 200 Hz, 2 g Power consumption max. 200 mA 200 – 500 Hz, 4 g Supply connector D-Sub 15-pin, combined with IO and testterminal Sweep speed 1 oct / min Duration of test 2 h per axis Immunity EN50082-2, Class 3 Shock test (long-term) IEC 68 Part 2-29 Emission EN55022, Class A Shock form half sine form Amplitude 15 g Duration of shock 6 ms Number of shocks 4.000 * Antenna connection Mechanical data Housing Housing material aluminium Shock test IEC 68 Part 2-27 Outer dimensions 77LA04/2-SER, -ET, -MD, -DP 145 × 130 × 54 mm Weight 77LA04/2-SER, -ET, -MD, -DP Baumer Ident GmbH 700 g Shock form half sine form Amplitude 30 g Duration of shock 15 ms Number of shocks 3* * Measured in both directions of the 3 main axis of the test object, oriented orthogonal to each other. Read/Write Short R ange System Manual Page 26 of 59 Sys tem Components 4.1.3 Central Unit 77LA04/4 –SER, -DP !" !# &' ( ' & !$ !% 78 mm Di mensions 77LA04/4-SER, -DP 4.1.3.1. Connector pin assignment The supply circuits must comply w ith the requirements of the SELV circuits (see EN60950). A screened cable must be used for the power supply. Only in that way the required EMC is achieved. SELV – Safety Extra Low Voltage – Protective measure against dangerous body currents. Protective first voltage, circuit not floating. Pin Signal description 1, 9 Power supply, 24 VDC, V+ 2, 10 Power supply, 0 VDC, V- 14 Digital input 1, anode, Digital input 1, cathode, - 13 Digital input 2, anode, Digital input 2, cathode, - 12 Digital output 1, collector, Digital output 1, emitter, Digital output 2, collector, Digital output 2, emitter, Terminal interface GND Terminal interface RxD 15 Terminal interface TxD EMC – Electromagnetic Compatibility 11 The signal circuits must comply w ith the requirements of the SELV circuits (see EN60950). SELV – Safety Extra Low Voltage – Protective measure against dangerous body currents. Protective first voltage, circuit not floating 4.1.3.1.1. Power supply, Terminal and Digital I/Os Terminal Interface On the 15-pin D-sub connector there is a terminal Interface RS232 available for service and diagnostic purposes. When the central unit is equipped with the Profibus-DP communication module 77COM-DP, the terminal interface is also used to set the correct Profibus slave address. Warning! The terminal Interface is not galvanically Separated! Page 27 of 59 Read/Write Short R ange System Manual Baumer Ident GmbH Sys tem Components Digital I/Os The two galvanically separated digital inputs have a permissible input voltage of: ‘1’-signal 16 … 36 V (max. 10 mA) Profibus DP host interface (in central unit 77LA04-DP) The host interface corresponds to the Profibus-DP specifications. ‘0’-signal -2 … +2 V The above is valid when using an input resistor of about 3kΩ . The two galvanically separated digital outputs have an allowed switching voltage range of: 10 … 36 V / 0,05 A (50 mA) Pin Name Signal description Shield Shield / Protective ground M24 Earth for 24 V voltage out RxD/TxD-P Receive / Transmit signals – positive CNTR-P Control signal for repeater – positive DGND Data ground (ground to VP) VP Voltage supply for the termination resistors (+5V) Signal description P24 voltage out 24V RS 232 RxD RxD/TxD-N RS 232 TxD Receive / Transmit – negative RS 232 GND CNTR-N RS 422 TA and RS 485 A Control signal for repeater – negative RS 422 TB and TS 485 B RS 422 RA TS 422 RB VTERM for RS 422 and RS 485 (max 20 mA) 4.1.3.1.2. Host interface Serial host interface (in central unit 77LA04-SER) Pin Figures in bold typeface are mandatory and must be provided by the user. You must not connect any unused w ires! The cable has to be shielded! Baumer Ident GmbH Read/Write Short R ange System Manual Page 28 of 59 Sys tem Components Cable parameters Bus termination The bus cable is specified as cable type A within the standard EN50170 and can be applied according to the following table: If cable A according to EN50170 is used, a resistor combination should be used as bus termination to warrant a defined potential on the line. Parameter Cable A Wave resistance 135 .. 165 Ω Line Capacity < 30 pF/m Loop resistance 110 Ω /m Core diameter of the signal cable Ø 0,64 mm Core cross section > 0,34 mm² Schematic of bus termination In adhering to the above parameters, the following distances for a bus segment (branch) can be achieved: Baudrate (Kbit/sec) Max. cable length 9.6 1,200 19.2 1,200 93.75 1,200 187.5 1,200 500 400 1500 200 12,000 100 • Short branch cables (< 6,6 m) may be used up to 1.500 kbit/sec. • above this speed no branch cables should be used. Page 29 of 59 The cable shield must be connected to the protective ground to prevent EMC disturbances from reaching into the central unit. The power supply to the termination resistors on pin 6 is only intended for that purpose and thus restricted to 10 mA. It is important that the connectors at both ends of the Profibus-DP cable are equipped with termination resistors. If this is not the case there may be problems with the transmission. Read/Write Short R ange System Manual Baumer Ident GmbH Sys tem Components 4.1.3.2. System Diagnostics LED Description On the rear side of the controller there are 7 LED’s situated as shown in the diagram below: LED Layout on backpanel No. Signal name Function A1 – Antenna 1 active When lit, the antenna is active, executing a Read/Write command with a tag or the controller is waiting for a tag at this antenna (automatic Read/Write mode) A2 – Antenna 2 active ditto with antenna 2 1 up A3 – Antenna 3 active ditto with antenna 3 2 up A4 – Antenna 4 active ditto with antenna 4 A flashing LED indicates that the controller is running. When entering the Monitor – the LED stops flashing – the last LED state remains active until the normal program operation continues. R – RUN mode – flashing 1/2s Note: the Monitor program stops automatically on missing terminal inputs after about 30 seconds and the normal operation continues. Tx – Transmitting data The controller sends data via the host port (Serial or Profibus) – the LED is switched ON just before the data is put into the output FIFO buffer and switched OFF when the last character of data is placed in the communication device. Rx – Receiving data When the controller fetches a complete command from the communication device the LED switches ON. The LED switches OFF when the message receive has completed. With Profibus DP the LED switches ON at any change of the controller inputs state (CTL-octet) and switches OFF when the decoded command transfer to the command execution module (command parser) has completed. Hint: A flickering Rx-LED on Profibus without any flickering of the Tx-LED (for responses) indicates that the host does not handle the command handshake bits correctly – in this case refer to the section in this manual describing the CTL Bit Handshake Protocol. Baumer Ident GmbH Read/Write Short R ange System Manual Page 30 of 59 Sys tem Components 4.1.3.3. Technical Data Environmental Conditions The protection class IP65 is only v alid w hen protectiv e caps are fitted to the unused connectors and cables w ith sealed connectors are used. measured according to EN 60068-2-30 Operating Data Operating frequency 125 kHz Antenna type separate, series 77LSxx No. of antennae Data transfer speed 9600 baud (-SER) Interfaces Serial RS 232/422/485 9-pin D-Sub male Profibus-DP 9-pin D-Sub female Device addressing dip-switch or software command Temperature range 0 … +50 °C (Operating) -10 … +60 °C (Storage) Protection class IP 63 * Climate, Upper temperature +55 °C, 93 % rel. humidity Climate, Lower temperature +25 °C, 97 % rel. humidity Duration of climate test 2 cycles, 24 h each * IP65 when protective caps are fitted to the unused connectors and cables with sealed connectors are used. Vibration test IEC 68 Part 2-6 Wave type Sine form Frequency band 2 – 500 Hz Amplitude 2 – 8 Hz 7,53 mm peak./peak. Electrical Data 8 – 200 Hz, 2 g Supply voltage 24 VDC ±10% Power consumption max. 200 mA Sweep speed 1 oct / min Supply connector D-Sub 15-pin, combined with IO and testterminal Duration of test 2 h per axis Antenna connection 200 – 500 Hz, 4 g Shock test (long-term) IEC 68 Part 2-29 Immunity EN-50082-2, Class 3 Emission EN-55022, Class A Mechanical data Shock form half sine form Amplitude 15 g Duration of shock 6 ms Number of shocks 4.000 * Housing Housing material aluminium Outer dimensions 77LA04/4-SER, -DP 195 × 145 × 78 mm Weight 77LA04/4-SER, -DP Page 31 of 59 1.1 kg Shock test IEC 68 Part 2-27 Shock form half sine form Amplitude 30 g Duration of shock 15 ms Number of shocks 3* * Measured in both directions of the 3 main axis of the test object, oriented orthogonal to each other. Read/Write Short R ange System Manual Baumer Ident GmbH Sys tem Components 4.1.4 Central Unit 77LA04/2-IBS 78 mm Picture 1 Di mensions 77LA04/2-IBS 4.1.4.1. Connector pin assignment The supply circuits must comply w ith the requirements of the SELV circuits (see EN60950). A screened cable must be used for the power supply. Only in that way the required EMC is achieved. SELV – Safety Extra Low Voltage – Protective measure against dangerous body currents. Protective first voltage, circuit not floating. Pin Signal description 1, 9 Power supply, 24 VDC, V+ 2, 10 Power supply, 0 VDC, V- 14 Digital input 1, anode, Digital input 1, cathode, - 13 Digital input 2, anode, Digital input 2, cathode, - 12 Digital output 1, collector, Digital output 1, emitter, Digital output 2, collector, Digital output 2, emitter, Terminal interface GND Terminal interface RxD 15 Terminal interface TxD EMC – Electromagnetic Compatibility 11 The signal circuits must comply w ith the requirements of the SELV circuits (see EN60950). SELV – Safety Extra Low Voltage – Protective measure against dangerous body currents. Protective first voltage, circuit not floating 4.1.4.1.1. Power supply, Terminal and Digital I/Os Terminal Interface On the 15-pin D-sub connector there is a terminal Interface RS232 available for service and diagnostic purposes. Warning! The terminal Interface is not galvanically Separated! Baumer Ident GmbH Read/Write Short R ange System Manual Page 32 of 59 Sys tem Components Pin Name The two galvanically separated digital inputs have a permissible input voltage of: DO Data Out DI Data In ‘1’-signal 16 … 36 V COM Data Gound ‘0’-signal -2 … +2 V GND The above is valid when using an input resistor of about 3kΩ . Power supply for opto converter BC Bus Control (+5V) /DO Data Out inverted /DI^ Data In inverted +5V Power supply for opto converter Digital I/Os (max. 10 mA) The two galvanically separated digital outputs have an allowed switching voltage of: 10 … 36 V / 0,05 A (50 mA) 4.1.4.1.2. Host interface Interbus S host interface (in central unit 77LA04/2-IBS only) Description Recommended w iring IBS-Out IBS-In Interbus S IN – Remote Bus (female) Pin Name Description DO Data Out DI Data In COM Data Ground GND Power supply for opto converter /DO Data Out inverted /DI Data In inverted +5V Power supply for opto converter * This bridge is made if another module follows down the line and is only on the Out-Port. Conv ersion to fibre optic transmission Available converters • Remote-OUT to glass fibre OPTOSUB-PLUS-G/OUT – 27 99 63 6 Interbus S OUT – Device Side (male) • Remote-OUT to polymer fiber OPTOSUB-PLUS-K/OUT – 27 99 61 0 • Remote-IN to glass fiber OPTOSUB-PLUS-G/IN 27 99 62 3 • Remote-IN to polymer fibre OPTOSUB-PLUS-K/IN 27 99 58 4 Page 33 of 59 Read/Write Short R ange System Manual Baumer Ident GmbH Sys tem Components Please contact the manufacturer for detailed information. PDF files are available on the internet at: http://www.phoenixcontact.com Cables required for Interbus S w iring Characteristic quantity @ 20 °C Value Test method Number of conductors 3 × 2, twisted pair with common shield Conductor cross section Min. 0.2 mm² DC conductor resistance per 100m Max. 9.6 Ω Characteristic impedance 120 Ω ± 20 % @ f = 0.064 MHz IEC 1156-1 clause 3.3.6 100 Ω ± 15 Ω @ f > 1 MHz IEC 189-1 clause 5.1 Dielectric strength - Conductor / conductor 1000 V rms, 1 min IEC 189-1 clause 5.2 - Conductor / shield 1000 V rms, 1 min IEC 189-1 clause 5.2 Insulation resistance (after dielectric strength test) Min. 150 MΩ for a cable of 1 km IEC 189-1 clause 5.3 Maximum transfer impedance @ 30 MHz 250 mΩ /m IEC 96-1 Working capacitance @ 800 Hz Max. 60 nF for a cable of 1 km IEC189-1 clause 5.4 4.1.4.2. Status display of Interbus-S Colour Name Description gn RC Remote bus Check. Show s existing connection to foregoing Remote bus. It is active, if the in coming remote Bus is okay and the master is switched on. rd RD Disabled remote Bus. Shows the status of the remote Interface. ON means the remote interface is switched off. Baumer Ident GmbH yl VCC Positive supply voltage on an IC plus 5V gn BA Bus active. This LED shows the data on the Interbus cycles ON while sending a message to the PLC/PC via the HOST-Port Read/Write Short R ange System Manual Page 34 of 59 4.1.4.2.1. Monitor (77LA04-IBS only!) This connection is intended to listen to the internal data transfer between CPU and interface board. You must not feed signals into any one of the pins! Pin 1) Signal description Monitor connector Sys tem Components Monitor cable circuit PC / Terminal TxD RxD 3 RxD DSUB 9 10kΩ SGnd 5 SGnd 4.1.4.3. System Diagnostics RS 232 RxD – Monitor output 1) RS 232 TxD – Monitor output 1) - do not use - LED Description RS 232 GND 1) On the rear side of the controller there are 5 LED’s situated as shown in the diagram below: - do not use - - do not use - - do not use - - do not use LED Layout on backpanel - do not use connector requires special cable! No. Signal name Function A1 – Antenna 1 active When lit, the antenna is active, executing a Read/Write command with a tag or the controller is waiting for a tag at this antenna (automatic Read/Write mode) A2 – Antenna 2 active When lit, the antenna is active executing a Read/Write command with a tag or the controller is waiting for a tag at this antenna (automatic Read/Write mode) R – RUN mode – flashing 1/2s A flashing LED indicates that the controller is running. When entering the Monitor – the LED stops flashing – the last LED state remains active until the normal program operation continues. Note: the Monitor program stops automatically on missing terminal inputs after about 30 seconds and the normal operation continues. Tx – Transmitting data The controller sends data via the host port (Serial or Profibus) – the LED is switched ON just before the data is put into the output FIFO buffer and switched OFF when the last character of data is placed in the communication device. Rx – Receiving data When the controller fetches a complete command from the communication device the LED is switched ON. The led is switched OFF when the complete message is received. Page 35 of 59 Read/Write Short R ange System Manual Baumer Ident GmbH Sys tem Components 4.1.4.4. Technical Data Environmental Conditions The protection class IP65 is only v alid w hen protectiv e caps are fitted to the unused connectors and cables w ith sealed connectors are used. measured according to EN60068-2-30 Operating Data Operating frequency 125 kHz Antenna type separate, series 77LSxx No. of antennae Data transfer speed 9600 baud (-SER) Interfaces Interbus-S Device addressing IBS-IN 9-pin D type male IBS-OUT, 9-pin D type female dip-switch or software command Electrical Data Supply voltage 24 VDC ±10% Power consumption max. 200 mA Supply connector D-Sub 15-pin, combined with IO and testterminal Antenna connection Immunity EN50082-2, Class 3 Emission EN55022, Class A Mechanical data Housing Housing material -10 … +50 °C (Operating) Protection class IP 63 * Climate, Upper temperature +55 °C, 93 % rel. humidity Climate, Lower temperature +25 °C, 97 % rel. humidity Duration of climate test 2 cycles, 24 h each * IP65 when protective caps are fitted to the unused connectors and cables with sealed connectors are used. Vibration test IEC 68 Part 2-6 Wave type Sine form Frequency band 2 – 500 Hz Amplitude 2 – 8 Hz 7,53 mm peak./peak. 8 – 200 Hz, 2 g 200 – 500 Hz, 4 g Sweep speed 1 oct / min Duration of test 2 h per axis Shock test (long-term) IEC 68 Part 2-29 Shock form half sine form Amplitude 15 g Duration of shock 6 ms Number of shocks 4.000 * Shock test IEC 68 Part 2-27 195 × 145 × 78 mm Weight 77LA02/-IBS 77LA04/2-ET 0 … +50 °C (Operating) -10 … +60 °C (Storage) aluminium Outer dimensions 77LA02/-IBS Temperature range 1.1 kg Shock form half sine form Amplitude 30 g Duration of shock 15 ms Number of shocks 3* * Measured in both directions of the 3 main axis of the test object, oriented orthogonal to each other. Baumer Ident GmbH Read/Write Short R ange System Manual Page 36 of 59 Sys tem Components 4.2 The Antennae The system OISL has been developed with respect to the European regulation EN300330/Class 2. This class is intended for systems with customised antennae. The different antennae have been designed with respect to a wide variety of applications. In general antennae have to be used in an air environment. The regulation requires an approval for the central unit only whereas antennae of class 2 systems are not subject to any approval or permission requirements. For mounting in close proximity to metal please read the appropriate chapter in this system manual. Specifications about reading distances and recommended transponder types are also given in this system manual or in the OIS-L transponder data sheet LD.0306.EN. These antennae are passive; in particular any OIS-L antenna is only the inductive part of the systems resonance circuit. There are two different types: • AN.76.SR.xx.yy: These antennae are only for compatibility with an older Baumer Ident inductive identification system, 76LA01/xx • AN.77.SR.xx.yy: These antennae are standard use for the Baumer Ident OISL short range system with central units ZE.77.Sr.xx.yy. Page 37 of 59 Special antennae for mounting directly onto metal are available. The antenna transmits energy and data signals to and from the data tag. The coil and necessary electronics are enclosed in a sturdy frame housing made of polystyrene. The frame is fully sealed and is protected to an IP67 rating. On a standard frame antenna the housing accommodates four mounting holes size M6 for screws. A mounting kit (optional) containing brackets and vibration dampeners is available to facilitate the simple and correct mounting of the antenna. Read/Write Short R ange System Manual Baumer Ident GmbH Sys tem Components 4.2.1 Standard Frame Antennae Name Type Order No. Remarks 77LS01 AN.77.SR.01.01 DD100014 Standard Tuning 77LS01 AN.77.SR.01.02 DD100008 Tuned for 20 distance mm to steel 77LS02 AN.77.SR.02.01 DD100015 Standard Tuning 77LS03 AN.77.SR.03.01 DD100016 Standard Tuning 77LS04 AN.77.SR.04.01 DD100017 Standard Tuning 77LS09 AN.77.SR.09.01 DD100019 Standard Tuning 77LS09 AN.77.SR.09.02 DD100113 Tuned for 20 distance mm to steel 77LS09 AN.77.SR.09.03 DD100040 Tuned for 20 distance mm to steel, ET Version * * Extended Temperature Name Type H-c/c W-c/c Weight, kg Mounting 77LS01 AN.77.SR.01.xx 100 100 85 85 0,5 2 x M4 77LS02 AN.77.SR.02.xx 150 150 81 81 0,8 4 x M6 77LS03 AN.77.SR.03.xx 225 225 156 156 1,2 4 x M6 77LS04 AN.77.SR.04.xx 275 275 206 206 1,5 4 x M6 77LS09 AN.77.SR.09.xx 400 400 331 331 1,8 4 x M6 Fra me antennae – mechanical data – All dimensions in mm Baumer Ident GmbH Read/Write Short R ange System Manual Page 38 of 59 Sys tem Components 4.2.1.1. Common data for all frame antennae 4.2.2.2. 77LS05 Technical Data Type AN.77.SR.05.01 Temperature 0 … +50 °C (Operating) range -10 … +60 °C (Storage) Order code DD100018 Housing PVC Housing Polystrol (PS), dark grey Tuning Free air Protection class IP65 Dimensions Ø M30 × 1,5 × 80 (see drawing below) Tuning Free air Weight 60 g (320 g incl. cable) Data sheet LD.0331.EN Cable 5 m included The –ET version has an extended temperature range of Temperature -10 … +50 °C (Operating) range -10 … +80 °C (Storage) 4.2.2 Special Antennae The different antennae have been designed with respect to a wide variety of applications. In general antennae have to be used in an air environment. In difference to 77LS05 the antenna 77LS06 has an internal ferrite rod while the housing is identical. Thus, the antenna field has a special shape which influences reading distance an maximum passing speed of a transponder. The antenna 77LS07 is designed for direct mounting onto metal. ∅ 4.2.2.1. Common data for all special antennae Cable fixed cable, 5 m length (other lengths on request), min. bending radius: 50 mm, static use Temperature range 0 … +50 °C (Operating) -10 … +60 °C (Storage) Protection class IP67 Page 39 of 59 Di mensional drawing of 77LS05 & 77LS06 4.2.2.3. 77LS06 Technical Data Type AN.77.SR.06.01 Order code DD10139 Housing PVC Tuning Free air Dimensions/ mounting Ø M30 × 1,5 × 80 (see drawing before) Weight 80 g (340 g incl. cable) Data sheet LD.0332.EN Read/Write Short R ange System Manual Baumer Ident GmbH Sys tem Components 4.2.2.4. 77LS07 Technical Data Type AN.77.SR.07.01 Order code DD100182 Housing PVC Tuning Free air or direct on metal Dimensions/ mounting 46 × 30 × 10 mm, 2 × M 3 Weight 230 g (incl. cable) Data sheet LD.0333.EN Photo of 77LS13 4.2.2.6. 77LS14 Technical Data Type AN.77.SR.14.01 Order code DD100098 Housing Brass/PBTP Tuning Free air Dimensions/ mounting 32 × 20 × 10 mm, 2 × M 3 Weight 230 g (incl. fixed cable) Data sheet LD.0334.EN Di mensional drawing of 77LS07 4.2.2.5. 77LS13 Technical Data Type AN.77.SR.13.01 Order code DD100128 Housing Brass/PBTP Tuning Free air Dimensions/ mounting M 18 × 1 × 20 mm Weight 260 g (incl. fixed cable) Data sheet LD.0335.EN Baumer Ident GmbH Di mensional drawing of 77LS14 Read/Write Short R ange System Manual Page 40 of 59 Sys tem Components 4.3 Data Tags 4.3.1 Accessing Data Tags By offering the opportunity to handle various tag types it is necessary to provide information on how to access read only and read write tags. This overview gives a short overview about different tag types and their special access parameters. 4.3.1.1. Basic Definitions Series 76 tags Read-only tags – EM series 4001, 4003, and 4103 compatible. 40 Bit Code ID, read only Type 76LDxxx-yy • xxx = housing diameter or size specification • yy = material, housing, ... code Example 76LD050-01: • • • The memories of the various read write tag types (77LDxxx) are physically organized in pages. One page contains 4 Bytes or 32 Bits of data. Only a page can be accessed as a smallest unit. The Read/Write data tag’s memory size allows to access 4 to 48 pages (16 to 192 Bytes, 128 to 1536Bit) of user pages depending on the specific tag type. Byte access is supported only on the base ‘page read, modify byte, page write back’. Read-only tags (76LDxxx) are not organized in pages. The memory contains a total net size of 5 Bytes (40 bits) of fixed sized programmed data. The memory size including extra synchronization bits and parity bits is 64 bits. 4.3.1.2. Read Only Tags The 76LDxxx read only tag family offers a memory size of 64 bits. These bits are transmitted sequentially while the tag is in the active antenna field. 24 bits are used as the message frame with the SYNC-Header, parity bits and stop bit. 40 bits are used as the UNIQUE ID. Only these 40 bits are delivered to the user. read only tag (series 76) 50mm diameter Epoxy housing Series 77 tags Read/Write tags – 128 Bit, 1536 Bit user memory space Type 77LDxxx-syy • xxx = housing diameter or size specification • s = capacity specification 1 = 2 kBit Tag 2 = 256Bit Tag • yy = material, housing, ... code Example 77LD100-101 • • • • • ID Byte [MSB] ID Byte ID Byte ID Byte ID Byte [LSB] 40Bit unique. (Read only) [64 Bits with sync bits and parity bits] Tag data logical me mory map 2kBit Read write tag 100mm diameter PVC housing The TAG-ID has a length of 40 bits packed into 5 bytes. Each byte is transmitted as 2 hexadecimal ASCII characters ‘0’...’9’, ‘A’...’F’. The higher order nibble is sent first following the lower order nibble. 77LD030-201: • The logical memory map on the data tag looks like the follow ing: With read-only tags there is no need to set any page numbers since the tag has a fixed code length and is not divided into pages. 256 Bit Read/Write tag 30mm diameter EPOXY housing In the following chapters the ‘xxx’ and ‘yy’, etc. abbreviations are replacements for the specific tag type specifications (housing, type, material, diameter, size, etc.). Page 41 of 59 Read/Write Short R ange System Manual Baumer Ident GmbH Sys tem Components Optional read only configuration 4.3.1.3. 256 Bit Read/Write Tag Type A specialty of this tag type is that it can mimic a read only tag. Using this feature PREDEFINED or multiple READ ONLY TAGS with the same ID may be produced that are completely compatible to the Series 76 tags. Series 77LDxxx-2yy data tags may be used in a mixed environment with 76LDxxx tags. When using the Read/Write data tag 77LDxxx-2yy it is important to state which page you want to read from. The 256 Bit type contains 8 pages, each having 32 Bit. The first page contains the unique serial number of the tag, the next three pages are reserved and the remaining 4 pages are available for user data. This tag function must be set-up in factory or requires special controllers and controller software at the customer site. The data on the tag has the follow ing layout Page # Contents Access 32 Bit unique. (Read only) Public No access available to this 3 pages Not public Serial number Reserved Reserved Reserved User data 1 Read and write User data 2 -“- Option: 64 Bit Read only memory Public layout for RO operation Public User data 3 -“- Public User data 4 -“- Public Tag data logical me mory map The Read Only Memory Option – Bit Map D03 D13 D23 D33 D43 D53 D63 D73 D83 D93 CP3 Line Parity 1 Line Parity 2 Line Parity 3 Line Parity 4 Line Parity 5 Line Parity 6 Line Parity 7 Line Parity 8 Line Parity 9 Line Parity 10 Column Parity D02 D12 D22 D32 D42 D52 D62 D72 D82 D92 CP2 D01 D11 D21 D31 D41 D51 D61 D71 D81 D91 CP1 D00 D10 D20 D30 D40 D50 D60 D70 D80 D90 CP0 LP0 LP1 LP2 LP3 LP4 LP5 LP6 LP7 LP8 LP9 Digit 1 Digit 2 Digit 3 Digit 4 Digit 5 Digit 6 Digit 7 Digit 8 Digit 9 Digit 10 4 Bit Sync-Headerbits Page 4 Page 4 Page 4 Page 4 Page 4 / Page5 Page5 Page5 Page5 Page5 Page5 Page5 Page4 8 bit version custumer ID 32 bit unique identifier allowing ~4 billion of combinations Line Parity Stop bit Page5 The parity is calculated as even parity. 4.3.1.4. 2kBit Read/Write Tag Type The 2kBit data tag is operating functionally similar to the 256 Bit tag introduced above. The Baumer Ident GmbH main differences are the larger amount of pages that can be read by an atomic command (up to 16 pages max.) and different page start addresse s of user data area and its greater size. Read/Write Short R ange System Manual Page 42 of 59 Sys tem Components The memory of the 2kBit data tag 77LDxxx-1yy contains 64 pages, each having 32 Bit. The first page contains the unique serial number of the tag, the next seven pages are reserved and not accessable. Pages 8 to 15 are reserved and are accessable with Long Range Reader Devices only The remaining 48 pages are available for user data without any restriction. The data on the tag has the follow ing layout Page # Contents Serial number Reserved … -“- -“- -“- … -“- 15 Reserved 16 User data 1 page Read and write … -“- -“- 64 User data 48 page -“- 32 Bit unique. (Read only) No access available to 7 pages No access available to 8 pages for short range reader Standard: no access with long range reader. Access with long range reader requires special firmware. Tag data logical me mory map Page 43 of 59 Read/Write Short R ange System Manual Baumer Ident GmbH Sys tem Components Baumer Ident GmbH Read/Write Short R ange System Manual Page 44 of 59 Hints on Installation and System Design 5 Hints on Installation and System Design 5.1 Basic considerations 5.2 The antenna lobe We would all like to ensure that all of the efforts that have gone into planning and designing a new system will enable it to be installed problem free in an efficient and reliable manner. Enabling the new system to meet all of the planned project criteria. When selecting the correct OIS-L components for an application, there are a few more items to be considered: The antenna field runs concentric with the coil windings. Hence the field is stronger towards the centre of the antenna, where the fields from all four sides coincide. A certain field also occurs on the outside of the antenna frame. Thisis the reason why the field close to the antenna surface is larger than the actual coil winding itself. The following graph shows a typical antenna field form and spread when both the antenna and data tag are free from metal influences. The env ironment • Is it free from metal around antenna and data tag • Electrical noise close to the antenna -or data tag • Humidity • Temperature • Aggressive media • Vibrations, shock Required distance betw een antenna and data tag Writing data to the tag • Number of write cycles per time unit • Static • Dynamic 5.3 Useful antenna field It is important to distinguish between static and dynamic applications. The tag needs to be within the active field for approximately 80-150 ms (depending on tag type for one page or read only Code-ID) to guarantee a correct code reading or data programming. The higher up on the lobar antenna field form the tag passe s the antenna, the shorter the useful field gets resulting in a reduction of the max. passing speed possible. The reading range achievable depends on different factors, e.g. antenna type, data tag position, and interferences in the environment. Typical values achievable are listed in the following tables under conditions as stated in the respective table. Passing speed required Amount of data to be transmitted Max. out of centre deviation (± mm) Page 45 of 59 Read/Write Short R ange System Manual Baumer Ident GmbH Hints on Installation and System Design Antenna field – Communication – range definition for static and dynamic application The various reference numbers in the previous graph have the following meanings: Hmax This is the maximum distance possible between the antenna and the data tag where the field strength is high enough to power up the data tag. Since the diameter at this point is close to zero, it can only be used for static applications. Ha This is the main field and should be used for dynamic applications. The max diameter Ø D indicates the upper limit for dynamic applications. For maximum allowable passing speeds please refer to the appropriate manual section. Hm Defines the distance between a metal surface and the antenna. For optimal system performance it is essential to keep a minimum distance to any metal surface. The W stands for the maximum allowable ± offset from the centreline, having just a minor influence on the passing speed in dynamic applications. ØD The maximum diameter Ø D indicates the upper limit for dynamic applications. Baumer Ident GmbH Note The tags of the same size e.g. 77LD03-xx have the same communication distance; hence not all variants are displayed in the table. Set-up to establish Read/Write distances Read/Write Short R ange System Manual Page 46 of 59 Hints on Installation and System Design 5.3.1 Width ∅D and W and reading range at distance Ha ∅ D, W [mm] Data tag Antenna 76LD020 76LD030 76LD050 76LD060 77LS01 100, 50 100, 90 100, 95 100, 100 77LS02 150, 100 150, 130 150, 125 150, 140 77LS03 225, 170 225, 170 225, 190 77LS04 275, 160 275, 190 275, 220 77LS05 50, 30 50, 30 50, 50 77LS09 400, 335 400, 375 76LD500 Reader 100, 95 77LA04/x 150, 145 150, 125 77LA04/x 225, 200 225, 220 225, 190 77LA04/x 275, 230 275, 265 275, 220 77LA04/x 1) 1) 50, 50 77LA04/x 400, 375 77LA04/x 50, 60 76LD100 100, 140 50, 80 400, 380 1) 400, 395 Di mensions of communication field, mm at distance Ha for read-only tags of series 76 ∅ D, W [mm] Data tag Antenna 77LD020 77LD030 77LD050 77LS01 100, 50 100, 90 100, 90 77LS02 150, 100 150, 120 150, 125 77LS03 225, 170 225, 170 77LS04 275, 160 77LS05 77LS09 77LD100 77LD500 Reader 100, 90 77LA04/x 150, 145 150, 125 77LA04/x 225, 190 225, 220 225, 190 77LA04/x 275, 180 275, 220 275, 265 275, 220 77LA04/x 50, 30 50, 30 50, 50 50, 50 77LA04/x 400, 330 400, 355 400, 355 77LA04/x 100, 140 50, 80 1) 1) 400, 395 Di mensions of communication field, mm at distance Ha for Read/Write tags of series 77 1) if the tag is larger than the antenna – W is determined by the tag size! 5.3.2 Operational Read/Write range Ha Ha[mm] Data tag Antenna 76LD020 76LD030 76LD050 76LD060 76LD100 76LD500 Reader 77LS01 50 70 100 110 130 100 77LA04/x 77LS02 60 80 120 130 170 130 77LA04/x 77LS03 70 110 150 170 210 160 77LA04/x 77LS04 60 120 170 180 220 180 77LA04/x 77LS05 30 40 60 60 70 60 77LA04/x 77LS09 120 180 210 290 190 77LA04/x Typical communication distance for read-only tags of series 76 * Combination of data tag and antenna not recommended! Page 47 of 59 Read/Write Short R ange System Manual Baumer Ident GmbH Hints on Installation and System Design Ha[mm] Data tag Antenna 77LD020 77LD030 77LD050 77LD100 77LD500 Reader 77LS01 35 60 90 130 100 77LA04/x 77LS02 50 70 100 150 150 77LA04/x 77LS03 45 90 150 200 170 77LA04/x 77LS04 35 100 170 250 190 77LA04/x 77LS05 30 50 70 100 70 77LA04/x 77LS09 100 170 290 200 77LA04/x Typical communication distance for Read/Write tags of series 77 5.3.3 Peak Read/Write range Hmax Hmax[mm] Data tag Antenna 76LD020 76LD030 76LD050 76LD060 76LD100 76LD500 Reader 77LS01 70 100 140 150 190 150 77LA04/x 77LS02 90 130 170 190 250 180 77LA04/x 77LS03 100 160 220 240 300 230 77LA04/x 77LS04 90 170 240 260 320 250 77LA04/x 77LS05 40 60 80 90 100 80 77LA04/x 77LS09 170 260 300 410 270 77LA04/x Maximu m co mmunication distance for read-only tags of series 76 Hmax[mm] Data tag Antenna 77LD020 77LD030 77LD050 77LD100 77LD500 Reader 77LS01 50 90 130 190 160 77LA04/x 77LS02 75 100 150 220 220 77LA04/x 77LS03 75 130 220 260 250 77LA04/x 77LS04 50 150 240 310 280 77LA04/x 77LS05 40 60 80 120 80 77LA04/x 77LS09 160 260 380 310 77LA04/x Maximu m co mmunication distance for Read/Write tags of series 77 * Combination of data tag and antenna not recommended! Baumer Ident GmbH Read/Write Short R ange System Manual Page 48 of 59 Hints on Installation and System Design 5.3.4 Static applications From the above statement it is evident that the upper part of the field may only be used in static applications. Local environmental influences may have an adverse effect on the achievable Read/Write distances. It is therefore vitally important to measure the distances on site with the equipment to be used, to avoid problems in the field. A particular problem to look out for when considering an installation, can be caused by the close proximity to strong fields generated from ACservos. Note! Watch out for possible disturbances in the area surrounding the antenna. 5.3.5 Dynamic applications 5.4 Calculating the Passing Speed The achievable passing speed depends on the size of the antenna, data tag and the number of Bytes to be transferred. The contact time for reading the fixed-code serial number i.e. the time the data tag is required to be within the useful area of the antenna field is about 140 ms. This gives a simple rule-of-thumb to calculate the maximum passing speed for a particular antenna/data tag combination. Desired passing speed in mm/ ms × 100 = Length of useful antenna field required in mm. Example passing speed = 30m/min (100 ft/min) For dynamic applications For dynamic applications only the lower section of the lobar field should be used. This is demonstrated in the graph given on the previous page. A second important factor to consider in dynamic applications is the off-centre deviation. The corridor W in the graph indicates the maximum deviation +/- from the antenna centre line. The field varies slightly with the data tag size. For practical purposes a value between 0,4 and 0,5 × Ø D can be used as a start value. If the data tag extends beyond these values, the contact length with the active field gets shorter, reducing the achievable passing speed. Do not forget to consider the deviation from the antenna’s centre line! This equals 0.5 mm/ ms × 100 = 50 mm useful antenna field length. 100 ft/min = 0.02"/msec. × 100 = 2" useful antenna field length The tables before show typical values for different antennae and different tags used. The values have been established from measurements from several tags and the average value has been taken. Temperature variations and production tolerances may produce values that differ from the above by ±20%. Hence we recommend to perform tests with the equipment on the site in question, to establish the Read/Write distances and passing speeds achievable in the actual application. Note! Local conditions may affect the Read/Write distances achievable. Production tolerances and temperature changes may also cause a deviation from the values in the table! Page 49 of 59 Read/Write Short R ange System Manual Baumer Ident GmbH Hints on Installation and System Design 5.4.1 Communication: Reader – Antenna – Data Tag 5.4.1.1. Read Only Tag – 76LDxxx The read only tag has a fixed timeing therefore three constant describe the typical tag-reporting rates to be expected Read: 80 ms : ously. 2kBit Tag: Type family 77LDxxx-1yy Pages: 0, 16,..,63 Number of Pages: 1..15 or 0 for 16 pages Note: 16 possible when using 0 as number of pages in the standard host commands using Serial, Profibus-DP or Interbus-S protocols. Read: Number of Pages < 16 T read [ms] = 81+ 44 * ‘Number of Pages’ reading of tag in antenna field, continu- 117 ms : Tag enters antenna field newly, 1 time then 80ms continuously 150 ms : worst case under influence of disturbance Number of Pages = 16 T read [ms] = 81+ 44 * 16 = 785ms Example: 11 pages to read T read [ms] = 81+ 44 * 11 = 565ms Write: 5.4.1.2. General formulas for Read / Write Tag Types Number of Pages < 16 T write [ms] = 86 + 48 * ‘Number of Pages’ Number of Pages = 16 256Bit Tag: Type fam ily 77LDxxx-2yy Pages: 0, 4...7, Number of Pages: 1..4 T write [ms] = 86 + 48 * 16 Example: 9 pages to write T write [ms] = 86 + 48 * 9 = 518ms Read: T read [ms] = 60+ 36 * ‘Number of Pages’ Example: 2 pages to read T read [ms] = 60+ 36 * 2 = 132ms Write: T write [ms] = 65 + 39 * ‘Number of Pages’ Example: 3 pages to write T write [ms] = 65 + 39 * 3 = 182ms Baumer Ident GmbH Read/Write Short R ange System Manual Page 50 of 59 Hints on Installation and System Design 5.4.2 Communication: Reader – Host (PC or PLC) The communication time required between the central unit and the host depends mainly on three factors: (T whost) (T woisl ) (10 + 4 * 2 *) * 1,1 + 9 * 1,1 Example: write 15 pages T write_comm [ms] = [(10 + 8 * 15) + 9] * 1,1 = 152,9 ms • Type of communication • Cycle time of the host • Software used The communication can be split into three main steps as follows: 1) A command is prepared and executed in the host and transmitted to the central unit. 2) The central unit performs the instructions i.e. writes data to and/or reads data from the tag. The data exchange between central unit and tag starts as soon as the tag has entered the active antenna field. The data received from the tag is evaluated and verified and subsequently stored in the memory of the central unit 3) The host polls the central unit and the code stored is transmitted to the host. 5.4.2.1. Serial communication time The communication between the host, the central unit and tag is asynchronous at a standard transfer rate of 9.600 Bps. This is the base for calculating the amount of data that may be transferred during the time the tag is within the active field of the antenna. For the serial and Interbus-S controller versions the transfertime via the serial link must be added to any read / write execution times. The Profibus-DP versions provide a faster internal transfer rate and must be handled differently. Read command: It isn’t possible to give a general formula for the correlation of speed vs amount of data to handle due to the fact that too many different parameters are influencing this calculation. It is only possible to show the graphical representation of the correlation for typical combinations of tags, antennae to help the user to estimate the key limits of this scheme. The following information only applies to data tags within the field with the boundary Wshort and Wlong of the main field Ha 5.4.3.1. Component selection Selecting the best antenna, tag combination for a given application is executed as an iterative process. Various different parameters must be varied to get a proper component match to the specific application and environmental conditions. The following steps must be taken to determine the required parameters. 1. Select the antenna for the required read/write distance antenna – tag from tables: ‚Operational Read/Write range Ha’ T read_comm [ms] = T rhost + T roisl = (T rhost) (T roisl ) 5.4.3 Correlation of Passing Speed vs. Amount of Read/Write Data 10 * 1,1 + (9 + 4 * 2 * ) * 1,1 Example: read 16 pages T read_comm [ms] = [10 + (9 + 8 * 16)] * 1,1 = 161,7[ms] 2. Check the antenna selected for matching against the table: ‚Width W of reading range at distance Ha’ 3. As result the Tag-Type and the Antenna are selected. Write command: T write_comm [ms] = T whost + Twoisl = Page 51 of 59 Read/Write Short R ange System Manual Baumer Ident GmbH Hints on Installation and System Design 4. The given antenna size ∅ D and the Tag diameter give the available physical reading length as result. The parameter ∅ D can be determined from table: Controller 77LA04/2-SER with one antenna. Required read range ~50mm (distance tag / antenna), minimum distance 30mm, max. distance 70mm. Data tag type read only – 76LDxxx ‚Width W of reading range at distance Ha’ Now all parameters referring the available length of the read/write area S proc_len are determined. Step 1 (Antenna/Tag) Select Antenna/Tag pairs with Ha > 70mm 5. With the next step the available time for communication with the data tags is calculated from the application specifications. Antennae 77LS02..77LS04 are matching Data tag 76LD030 or 76LD050 are matching The user must determine the number of pages to transfer between antenna and tag. With the parameters tag type and number of pages to transfer over all, the user can calculate the amount of time Tproc_len required to proceed. 6 The best case passing speed v opt_proceed is calculated (using the general formula v = s/t): v opt_proceed = S proc_len / Tproc_len Example: The following conditions are given by the application specifications: Start w ith 77LS02 and 76LD030 Step 2 (Antenna / Tag verification) From the table W = 120mm is taken. Step 3 W should be OK this selection seems acceptable Step 4 Check read width W The antenna 77LS02 has an effective coil diameter of 120mm (150mm – 2*15mm), using a data tag with an effective coil diameter of 30mm. The estimated resulting field size is: W = S proc_len = 150mm – 30mm = 120mm. See the following drawing for details. Dta g Dta g Dta g Estim ated coil d iameter Estimate antenna reading area using given antenna diameter and tag diameter. Step 5 Estimate the time required for Read / Write operations: Baumer Ident GmbH Read/Write Short R ange System Manual Page 52 of 59 Hints on Installation and System Design Read only tag Tag 76LD030 read time is 117ms when the tag enters the field. The worst case is typically 150ms. To be on the save side 150ms is taken for the following calculation. Tread = Tproc_len = 150ms. Step 6: Determine the maximum tag passing speed. v opt_proceed = S proc_len / Tproc_len = W / Tread = = 120mm/150ms = 120/150 m/s = 0,8m/s = 48m/min If this doesn’t meet the application requirement (speed is too low) then the calculation with the next larger antenna / data tag pair, i.e. 77LS03 antenna and 76LD050 data tag must be repeated with step 1. 5.5 Installation Guidelines In an ideal situation, the system is free from environmental influences, proximity to metal and electrical noise. An industrial environment is normally far from being the ideal situation. For that reason the installation can only be done by a technician, w ho has enough know ledge about the OIS-L system. Baumer Ident offers support and training in Germany. The nearness of the antenna and/or data tag to a metal surface has more than one adverse effect on system performance. The distance between two adjacent antennae and / or two tags plays an important role for optimal system function. Guidelines for min. distances are given in a following section. For optimum performance please ensure that the antenna is mounted as follows: • No metal closer than 100 mm to the antenna in any direction (Hx and Hm) • Data tag should be arranged as parallel as possible to the antenna surface The writing/reading range achievable depends on various factors, e.g. data tag type and position, environmental interference. For accurate values, tests should be carried out on-site. Typical values for certain antenna/tag combinations are listed in the subsequent section All values are valid for a metal free environment at an ambient temperature of 20 °C. Due to component and production tolerances as well as temperature influences, a variance of ±20 % is allowed. A set of mounting brackets is available and can be ordered separately. When the tags are flush-mounted in iron or aluminium, the reading distance is substantially reduced due to the loss of energy through eddy currents and other losses. By applying certain application techniques, it is possible to obtain reading distances of 50% as compared to the readings in air. Page 53 of 59 Read/Write Short R ange System Manual Baumer Ident GmbH Hints on Installation and System Design increase the frequency even more; in the worst case it will cause the system to fail. 5.5.1 Metal-free environment The closeness of the antenna and/or data tag to a metal surface has more than one adverse effect on the system performance. A second negative influence is the loss of energy. The metal in the form of Eddy currents will absorb a certain amount of the energy transmitted from the antenna. Hence, it is important to strictly adhere to the mounting recommendations provided in the user manual. If mounting is required on or close to metal parts, special antennae and data tags are needed. Baumer Ident has extensive experience in this field and is therefore able to offer a solution. Installation Diagram A major effect on the system is caused when a metal surface close to the coil detunes the frequency from its nominal value of 125 kHz. An iron surface will normally increase the frequency by approximately 6 kHz. An aluminium surface will The following graph shows the typical drop in system performance for any combination antenna / data tag when the antenna is mounted in close proximity to metal (Fig. 5-5). The reduction in performance is given as the distance to metal in relation to the size of the antenna loop, expressed as percentage. Influence on system performance by nearness to metal – distance antenna - Metal in % of antenna loop Ø Example The antenna 77LS09 has an antenna loop (Ø D) of 340 mm. If the antenna is mounted at a distance of 170 mm to a metal surface (=50% of loop) the system performance will be reduced to 45% of the performance it has in a metal free environment. Baumer Ident GmbH In order to reduce this great performance loss, antennae especially tuned to metall are available. This special antennae guarantee a performance of better than 90% of a standard antenna without influence of metal. Read/Write Short R ange System Manual Page 54 of 59 Hints on Installation and System Design In the previous sections the various negative influences on system performance have been discussed. To recap, the main points are as follows: • Mounting of the antenna and tag close to metal is not recommended. If certain critical values are not adhered to, the system performance will not only drop considerably - it can fail completely. • Flush mounting of the antenna and/or tag in a metal environment requires special attention. There must be a metal free area in all directions (distance values for antennae, pls. refer to Fig. 5-5). For the tags it is normally sufficient to have a distance of 50 mm to metal in any direction. • No metal brackets (or any other metal object) should be within the active field, since this will distort the field lines and reduce system performance. Performance with tag and antenna close to metal 5.5.2 Mounting examples The diagrams below show a typical mounting used in industrial applications. Indicated is the recommended minimum distances between two antennae, as well as between two adjacent tags. Should it become necessary to mount the antennae closer to each other than Shown in Fig. 5-6 an electronic interlock has to be arranged to prevent one antenna from "damping " the other. Performance with metal on three sides of antenna System performance with tag close to metal Antenna mounted close to metal Important Note! The more metal free area there is around the antenna and tag, the betterthe system performance. Should the antenna be mounted at a distance of less than 20% of the loop diameter Ø D, there is a risk that the system will fail. Page 55 of 59 Generally it is less detrimental to system performance if the tag is closer to the metal than recommended. Read/Write Short R ange System Manual Baumer Ident GmbH Hints on Installation and System Design 5.5.3 Distance between antennae or tags electronic interlock has to be arranged to prevent one antenna from “killing” the other. Should it become necessary to mount the antennae closer to each other than shown in Fig. 5-6 an OIS-L 77LS04 1234-56 BI I 98 34/0001 3xB OIS-L 77LS04 1234-56 BI I 98 34/0001 Minimu m distance between two antennae driven by different central units. > 2xB Antenna 77LS04 OIS-L 77LS04 BI1234-56 I 98 34/0001 Transport box with tag 77LD07 Minimu m distance between two data tags – Communication with the tags through metal transport reels Baumer Ident GmbH Read/Write Short R ange System Manual Page 56 of 59 Hints on Installation and System Design 5.6 EMC Guidelines EMC can be separated into three general types: EMC stands for E lectroM agnetic Compatibility. The EMC guidelines are constantly being updated and more stringent demands are applied to electronic components and equipment. Self-immunity The immunity against internal (own) electrical disturbances A considerable increase in the use of electronic equipment and appliances has taken place in recent years. The required performance of the equipment increases and the physical size of the equipment decreases. The component power consumption is reduced and the communication and processing speeds increase. General immunity The immunity against foreign electromagnetic disturbances The more units that are in operation, the higher the risk that they will influence each other. Hence, the reason for the stricter rules that constantly challenge the electronic companies. Note! It is the responsibility of the general contractor of the total system to adhere to the EMC guidelines for the total installation. Measurements taken at the planning and installation stage will prevent expensive system changes at a later stage Specific regional or country regulations and legal requirements must not be neglected 5.6.1 General With EMC we understand the ability of electric or electronic equipment to function without any problems in an electromagnetic environment. At the same time, the equipment is not allowed to influence or interfere with other equipment in the vicinity, beyond certain limits. Page 57 of 59 Emission The degree of radiation and interference onto other equipment. EMC tests are performed according to all three types. All Baumer Ident equipment undergoes these rigorous tests. Since the Baumer Ident equipment is only part of a total system, it is vital for the system performance that all system components adhere to these EMC guidelines. 5.6.2 Shielding concept In the OIS-L system the data exchange between the central unit and the host is performed at a rate of at least 9600 Baud via an RS 422 interface. When Profibus DP is used, the rate is considerably higher. The maximum cable length at 9600 Baud is 1000 meters. This necessitates good shielding of the data cables. Read/Write Short R ange System Manual Baumer Ident GmbH Hints on Installation and System Design shielding Baumer Ident GmbH Read/Write Short R ange System Manual Page 58 of 59 FAQ’s 6 FAQ’s mains voltage or DC Voltage above the limit of 36VDC into it. So don’t even try it! 6.1 Digital Input / Trigger To force a continuous operation with a trigger function, a 15pole adapter must be used. This sets the dedicated trigger input to an active state. For Input 1 active Connect Pin1-Pin14 or Pin9-Pin14 and Pin6-Pin2 with a little isolated wire For Input 2 active Connect Pin1-Pin13 or Pin9-Pin13 and Pin5-Pin2 with a little isolated wire What happens if there are spikes or drops on the power supply? Normally nothing. The galvanically isolated DCDC-Converters inside can stand an input voltage between 18 and 36 VDC. Spikes from usual electrostatic discharges should also do no harm onto this connector. The digital outputs are also protected against misuse. But be careful with overvoltages into the host interfaces. 6.2 Miscellaneous What happens if there is a polarisation error to the power supply? Nothing. The unit is protected against such errors. The only chance to kill the central unit is to feed Page 59 of 59 Read/Write Short R ange System Manual Baumer Ident GmbH
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