Siemens Compact Universal Controllers Users Manual
siemens compact universal controllers to the manual 778acd6c-2a58-4a9f-a96f-2a7cc056e508
2015-02-05
: Siemens Siemens-Compact-Universal-Controllers-Users-Manual-410644 siemens-compact-universal-controllers-users-manual-410644 siemens pdf
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7 865 RWF40... complete with housing Compact Universal Controllers RWF40... The RWF40... is a universal digital boiler temperature / pressure controller with functions designed specifically for the control of heat generating plant. The RWF40... and this Data Sheet are intended for use by OEMs which integrate the controller in their products! Mechanical design The controller is supplied complete with housing for flush panel mounting. The RWF40... is matched to the controlled variable and the required setpoint range by making parameter settings. The control parameters can be set and optimized while the burner is running. All settings are made with 4 buttons located on the unit front and are directly displayed. LEDs on the front indicate the following operating states: Control ON / OFF Positioning pulses ON or OFF for driving the burner´s air damper when using modulating burner control, or stage I / stage II when using 2-stage burner control «2-stage» operating mode Position of the configurable contact «K6» Manual control ON / OFF During operation, the digital display above the LEDs shows the setpoint (green), the actual value (red) and – when making parameter settings – the relevant parameters. CC1N7865en 01.09.2005 Building Technologies HVAC Products Warning notes To avoid injury to persons, damage to property or the environment, the following warning notes should be observed! Do not open, interfere with or modify the controller! • • • • • All activities (mounting, installation and service work, etc.) must be performed by qualified staff When selecting the cables, when making the installation and the electrical connections, observe the regulations of VDE 0100 «Erection of power installations with rated voltages below AC 1000 V» and the relevant national regulations Provide double-pole isolation of the controller from the mains supply if there is a risk of touching live parts while work is carried out Check to ensure that wiring is in an orderly state Fall or shock can adversely affect the safety functions. Such units must not be put into operation, even if they do not exhibit any damage Mounting notes • Ensure that the relevant national safety regulations are complied with • Please observe the notes given in the user documentation B7865 • Prior to commissioning the plant, check to ensure that wiring is in an orderly state Installation notes Commissioning notes Standards and certificates Conformity to EEC directives - Electromagnetic compatibility EMC (immunity) 89 / 336 EEC NE21, EN 50 081 part 1 - Electromagnetic compatibility EMC and EN 50 082 part 2 NAMUR recommentation ISO 9001: 2000 Cert. 00739 ISO 14001: 1996 Cert. 38233 Service notes • • • For service purposes, the controller can be removed from its housing with no need for tools The electrical connections are made via the screw terminals located at the rear of the housing Each time a unit has been replaced, check to ensure that wiring is in an orderly state and that the wires are firmly connected Disposal notes The unit contains electrical and electronic components and must not be disposed of together with household waste. Local and currently valid legislation must be observed. 2/10 Building Technologies HVAC Products CC1N7865en 01.09.2005 Type summary Controller with 3-position output housing fixing material and seal RWF40.000A97 Controller with 3-position output analog output housing fixing material and seal RWF40.001A97 Controller with 3-position output analog output RS-485 port housing fixing material and seal RWF40.002B97 Packaging variants (20 pieces, without documentation) RWF40.010A97 RWF40.011A97 Accessories Adapter frame for replacing the RWF32... Bracket For mounting the RWF40... on 35 mm DIN rails to DIN 46277 Dummy cover For covering a panel cutout for the RWF40... Demo case For demonstrating the functions of the RWF40... controller ARG40 ARG41 AVA10.200/109 KF8892 3/10 Building Technologies HVAC Products CC1N7865en 01.09.2005 Technical data General controller data Environmental conditions Mains voltage Mains frequency Safety class Mounting position Terminals for Power consumption Safety extra low-voltage Contact rating of the control outputs (relays «K1...K3») Up to 2 x 105 switching cycles Up to 107 switching cycles Weight complete with housing Recommended actuator running time Degree of protection of housing Front Base AC 110...240 V +10 % / -10 % 48...63 Hz II to DIN 0631 optional 2 x 1.5 mm² or 1 x 2.5 mm² max. 10 VA DC 24 V Storage Temperature range Humidity Transport Temperature range Humidity Operation Temperature range Humidity DIN EN 60 721-3-1 -20...+60 °C < 75 % r.h. 2 A / AC 24...240 V 0.1 A / AC 24...240 V approx. 760 g 15...60 s IP 65, EN 60529 IP 20, EN 60529 -40...+70 °C < 75 % r.h. -20...+50 °C < 75 % r.h. Condensation, formation of ice and ingress of water are not permitted! 4/10 Building Technologies HVAC Products CC1N7865en 01.09.2005 Function The RWF40... provides the following functions: One digital PID controller with a 3-position or analog output (optional) To control 2-stage burners, the RWF40... can be switched over to provide 2position control Automatic thermostat (or pressurestat) function in low-fire operation One shift controller for weather-dependent setpoint shifting One minimum limiter and one maximum limiter for the boiler temperature or the boiler pressure One limit thermostat to DIN 3440 (output 1) One potential-free configurable contact Manual operating mode Communication via serial port (option) Self-setting function Block structure 3 analog inputs Release of burner Input 1: Actual value for Pt100, Ni100, Pt1000, LG-Ni1000, thermocouples or standard signals Input 3: Outside temperature for Pt1000, LG-Ni1000 2 binary inputs For potential-free contacts Input 1: Operating mode changeover Input 2: Setpoint shifting / changeover Floating output Output 2: -Relay (actuating device open) Output 3: - Relay (actuating device closed) RWF40... Input 2: External setpoint, setpoint shifting for 0...1 kΩ resistor or linearized standard signals Output 1: - Relay (N.O. contact) Limit comparator Output 4: - Relay (N.O. contact) Power supply measuring transducer DC 24 V, 30 mA (short-circuit proof) Analog output (optional) Output 5: Analog output DC 0...10 V, DC 0...20 mA, DC 4...20 mA Serial port (optional) Power supply AC 110 ...240 V +10%/-10%, 48...63 Hz, max. 10 VA RS-485 MOD bus protocol 7865f01e/0905 5/10 Building Technologies HVAC Products CC1N7865en 01.09.2005 Function of the controller when used for burner control Low-fire operation In low-fire operation, the RWF40... operates like a control thermostat or pressurestat. This means that it operates as a 2-position controller maintaining the required setpoint by switching the burner on and off. The switching differential for 2-position operation can be adjusted within a wide range. If the demand for heat increases, the controller switches to high-fire operation only when an adjustable limit is exceeded. This function is aimed at optimizing the burner´s switching ratio. High-fire operation, 2-stage control In that case, the RWF40... operates as a 2-position controller with adjustable switching thresholds. Using the relays of the 3-position output, the RWF40... drives the actuator to the 1st and 2nd output stage. In this operating mode, the optional analog output switches between the minimum signal for the 1st stage and the maximum output signal for the 2nd stage. High-fire operation, modulating control In that case, the RWF40... operates as a PID / PI controller with a 3-position output without position feedback signals or, optionally, with a modulating output. By making use of its self-setting facility, the RWF40... is able to determine the PID / PI control parameters, or the parameters can be set manually. Binary input 1 (changeover of operating mode) Using a potential-free contact, the RWF40... can be switched from the modulating mode to 2-stage operation. Binary input 2 (setpoint shifting or setpoint changeover) In the case «setpoint shifting» is configured, the current setpoint is shifted by an adjustable amount. Configuration of «setpoint changeover» provides changeover between 2 setpoints adjusted on the RWF40... If analog input 2 is configured for an «external setpoint», changeover is provided between the setpoint adjusted on the RWF40... and an external setpoint. Limit comparator Potential-free contact «K6» can be assigned a number of functions. Example: Limit value supervision Operation 4 buttons on the unit front are used to operate and program the RWF40... During operation and programming, the 7-segment displays show the parameter values and parameter names. Weather-dependent setpoint shifting The controller´s standard configuration ex works is such that when connecting a QAC22… outside sensor, automatic changeover to weather-dependent setpoint shifting takes place. The signal delivered by the QAC2... outside sensor must not be fed parallel to several RWF40...! 6/10 Building Technologies HVAC Products CC1N7865en 01.09.2005 Function of the controller when used for burner control (cont´d) Analog input 1 (actual value sensor) To acquire the actual value, a number of sensors can be connected to the RWF40... Measurement range 2-or 3-wire resistance sensors Thermocouples Linearized standard signals Pt100 / IEC 751 -200...+850 °C (-328...+1562 °F) Pt1000 / IEC 751 -200...+850 °C (-328...+1562 °F) Ni100 / DIN 43760 -60...+230 °C (-76...+482 °F) Ni1000 / DIN 43760 -60...+230 °C (-76...+482 °F) LG-Ni1000 -50...+160 °C (-58...+320 °F) NiCr-Ni / type «K» -200...+1372 °C (-328...+2502 °F) Cu-Cu-Ni / type «T» -200...+400 °C (-328...+752 °F) NiCroSil-NiSil / type «N» -100...+1300 °C (-148...+2372 °F) FeCuNi / type «J» -200...+1000 °C (-328...+1832 °F) Pt-RhPt / type «S» 0...1768 °C (-32...3214 °F) ¹) Pt-RhPt / type «R» 0...1768 °C (-32...3214 °F) ¹) Pt-RhPt / type «B» 0...1820 °C (32...3308 °F) ¹) 0...20 mA scalable -1999...+9999 4...20 mA scalable -1999...+9999 DC 0...10 V scalable -1999...+9999 DC 0...1 V scalable -1999...+9999 ¹) Only RWF40.0X2B97 The power provided for the measuring transducers is DC 24 V / 30 mA. Analog input 2 (external setpoint shift or external setpoint) Feeding a signal to analog input 2, the controller´s setpoint can be influenced. The influence can be scaled. The following signals can be used: Input signals DC 0...1 V, DC 0...10 V, 0...20 mA, 4...20 mA 1 kΩ potentiometer in a 2-wire circuit 7/10 Building Technologies HVAC Products CC1N7865en 01.09.2005 Connection diagram (basic diagram) Temperature and pressure control on a dual-fuel burner. Burner control and supervision are provided by burner control type LAL... or LFL... Note DC 24 V at terminals «G+» and «G-» is used for powering the QBE... pressure sensor! RWF40... L N G1+ M1 B9 M9 XB6 M6 Q13 Q14 Y2 Q D1 GND D2 Y1 LAL..., LFL... 4 5 ST B M B QAE... M int. ext. 19 18 9 11 10 20 S1 BS 102 QAC... M R BV1 LK BSG... a v N z m M ~ 0 GAS SQ... MIN. RV BV1 I BV2 OIL L N 7865a01/1004 RWF40... L N G+ U1- M1 G- XU6 M6 Q13 Q14 Y2 Q D1 GND D2 Y1 LAL..., LFL... int. ext. ST G B 19 18 4 5 9 11 10 20 S1 BS M 102 QBE... 0...10 V BV1 BSG... N LK 0 a v z M ~ GAS m SQ... MIN. RV BV1 I BV2 OIL L N 7865a02/0905 Legend a Limit switch for air damper position OPEN QAE... BS Operation selector QBE... Pressure sensor 1 = firing on gas RV Gas control damper (modulating burner control) S1 Internal / external setpoint switch (E) 2 = firing on oil SQ... (2-stage burner control) BV... Fuel valve BSG... Remote setpoint adjuster (active when «S1» is closed) L... Burner control LK Burner´s air damper m (MIN) Auxiliary switch for controlling low-fire operation QAC... Immersion temperature sensor Actuator of burner´s air damper and gas control damper ST Connections for burner control´s start control loop v Auxiliary switch for the release of the 2nd fuel valve depending on the air damper position z End switch for the fully CLOSED position of the air damper Outside sensor for weather-dependent setpoint shifting 8/10 Building Technologies HVAC Products CC1N7865en 01.09.2005 Dimensions PGM 96 K6 91,5 Dimensions in mm 48 EXIT RWF40 112 43,5 Panel cutout to DIN 43 700 92 +0,8 7865m01e/0300 15,5 127,5 45 +0,6 ARG40 adapter frame 7865m02/0799 9/10 Building Technologies HVAC Products CC1N7865en 01.09.2005 Dimensions (cont´d) Dimensions in mm ARG41 83 10/10 Building Technologies HVAC Products 7,5 13 61,4 45 68 60 3 35,5 45 8 94 153 12,5 7865m04/1004 © 2005 Siemens Building Technologies Production GmbH Subject to change! CC1N7865en 01.09.2005
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