Keri Systems 4x4_Installation_Guide_G NXT 4x4 Installation Guide
User Manual: Keri Systems NXT-4x4 Installation Guide Installation Guide
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NXT 4x4 Installation Guide Section 1 – Wiring and Layout Diagrams Section 2 – Specifications and Cable Requirements Section 3 – Keri Contact Information 1.0 Wiring and Layout Diagrams 1.1 NXT-4x4 I/O Module Shielded CAT-5 Cabling total cable length 500 feet max (150 m) Shielded 4-Conductor Cabling Brown/Green/Orange w/o Stripe Power (Red) Brown/Green/Orange with Stripe Blue Ground (Black) IO Plus (Green) Blue with Stripe IO Minus (White) RS-485 4 3 2 1 TB21 Port 1 1 NO - Relay Common - Relay NC - Relay Input Ground 2 Relay 3 5 4 4 5 3 J23 Relay TB22 2 1 a JP1 NXT-4x4 Installation Drawing Port 4 TB25 J2 cde Ground Input NC - Relay Common - Relay NO - Relay Tamper Switch Input J1 TB23 Port 2 NO - Relay Common - Relay NC - Relay Input Ground f gh i 1 2 Relay b TB24 5 3 4 4 Relay 5 3 2 1 Ground Input NC - Relay Common - Relay NO - Relay Port 3 PCB Earth Ground Lug J24 P/N: 01998-002 - Rev. E See Table 1 on page 2 for LED definitions. NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense. Page 1 of 4 P/N: 01998-001 Rev. G NXT 4x4 Installation Guide Table 1: 4x4 LEDs Power Utility Purpose LED indicator a Purpose LED RS-485 Tx Purpose LED undefined b Purpose LED c Bus 1 f User 1 d Bus 2 g User 2 e Bus 3 h Bus 4 i 2.0 Specifications 2.1 NXT-4x4 Dimensions • • 2.2 • 2.3 • Future Application Relay State 4x4 PCB - 5.25 inches tall by 3.10 inches wide by 1.00 inches deep, not including wiring connectors - 13.33 cm by 7.87 cm by 2.54 cm 4x4 Enclosure - 8.00 inches tall by 7.00 inches wide by 2.75 inches deep - 20.32 cm by 17.78 cm by 6.98 cm Power Requirements 10 to 14 VDC @ 0.5 A (maximum current draw for a fully loaded NXT-4x4) Current Requirements at 12 VDC 250 mA max for each NXT-4x4 NOTE: If you are driving an electronic locking device (magnetic lock, door strike, etc.) using the same power supply as the 4x4, ensure the power supply provides enough current to drive every device connected, including an adequate safety margin. 2.4 • 2.5 • 2.6 Relay Contact Rating 1 A @ 24 VDC Operating Conditions 32°F to 150°F (0°C to 60°C) – 0% to 90% Relative Humidity, non-condensing Cable Options RS-485 bus runs can daisy-chain together an NXT-4x4 and NXT-Reader on one line. The total cable run distance should be less than 500 feet from the NXT controller for runs with 4x4s and less than 1,000 feet for Reader-only runs. NOTE: Cable resistance causes a drop in voltage at the end of long cable runs. Ensure the appropriate power and current for your device is available at the device at the end of the cable run. Heavier gauge cable reduces this affect. NOTE: Keri does not recommend hot-plugging a Reader, RIM, or 4x4 into an NXT controller. Remove power from the controller prior to connecting these devices. Page 2 of 4 P/N: 01998-001 Rev. G NXT 4x4 Installation Guide Table 2: Reader and 4x4 Cable Options Connection Type RS-485 bus from NXT-2D/-4D to NXT-4x4 only Total Run Length up to 500 feet Shielded, Stranded, 2 Twisted-Paira AWG Suggest 18 - Data plus 4x4 Power Belden 8723 CAT-5b unshielded 22 - Data only RS-485 bus from NXT-2D/-4D to NXT-4x4 and NXT Readers up to 500 feet RS-485 bus from NXT-2D/-4D to NXT Readers only up to 1,000 feet Shielded, Stranded, 4-Conductorc AWG Suggest 18 - Data plus 4x4 Power Windy City: 414302-S West Penn: 244 Tappan: 1880AB4M-CM 22 - Data only 18 - Data plus 4x4 Power Belden 8723 shielded 22 - Data only 18 - Data plus 4x4 Power 22 - Data only 22 for Data Belden 8723 shielded 22 for Data Windy City: 414302-S West Penn: 244 Tappan: 1880AB4M-CM Windy City: 416303-S West Penn: 241 Tappan: 2280AB4M-CM a. Keri recommends this cable type for best system performance. b. Keri’s preferred low-cost option. Keri has no suggested vendor for this type of cable. c. Use care when routing this type of cable as it can make the system more susceptible to EMI. Table 3: Controller Power, Inputs, and Outputs Cable Requirements Connection Total Run Length # of Conductors Shielded Stranded Twisted Pair AWG Belden Equivalent controller power 250 feeta 2 N Y Y 18 8461 earth ground shortest pathb 1 N N n/a 18 no specific requirement inputs and outputsc 500 feet 2 N Y n/a 22 no specific requirement a. To meet CE and C-tick regulations, the length of the controller power line can be no longer than 3 Meters (9.85 feet). b. Use the shortest possible path from earth ground point to PCB. Connect the earth ground only to the designated pin on the terminal block. This is important as all transient protection for the unit is made through this earth ground connection. For unit protection, the earth ground connection should always be made first. c. Values listed are minimums. Individual input and output devices may have more specific requirements. Page 3 of 4 P/N: 01998-001 Rev. G NXT 4x4 Installation Guide 3.0 Contact Keri Systems Keri USA Keri UK, Ireland, Europe 2305 Bering Drive San Jose, CA 95131 Unit 17 Park Farm Industrial Estate Ermine Street Buntingford Herts SG9 9AZ UK Telephone: (800) 260-5265 (408) 435-8400 Telephone: + 44 (0) 1763 273 243 Fax: (408) 577-1792 Fax:+ 44 (0) 1763 274 106 Web: www.kerisys.com Web:www.kerisystems.co.uk E-mail: sales@kerisys.com techsupport@kerisys.com E-mail:sales@kerisystems.co.uk tech-support@kerisystems.co.uk End of document. Page 4 of 4 P/N: 01998-001 Rev. G
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