TB21. NO - Relay. Relay. Common - Relay. NC - Relay. Input J23. Ground TB22 TB23. NO - Relay Common - Relay NC - Relay Input Ground.

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1 NXT x.0 Wiring and Layout Diagrams. NXT-x I/O Module Shielded CAT- Cabling Shielded -Conductor Cabling total cable length 00 feet max (0 m) Brown/Green/Orange w/o Stripe Brown/Green/Orange with Stripe Blue Blue with Stripe Power (Red) (Black) IO Plus (Green) IO Minus (White) RS-8 TB NXT-x Installation Drawing Port TB J JP a J TB Port Tamper Switch Port PCB Earth Lug TB cde fghi J b TB Port J P/N: Rev. E See Table on page 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 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. Table : x LEDs Power Purpose LED Future Application Purpose LED indicator a undefined b Utility Purpose LED State Purpose LED RS-8 Tx c Bus f User d Bus g User e Bus h Bus i Page of P/N: Rev. J

2 NXT x. Port Protection Transorbs are provided with the controller ship kit. They are used to protect the controller from voltage spikes induced on the port wiring by absorbing the excess voltage and slowly releasing it back into the circuit. Keri strongly recommends wiring in the transorbs provided with the controller ship kit. Refer to the Transorb Wiring Diagram below. Common - Lock / Alarm - Door Switch - + Fail-Secure Electric Lock Device or Alarm Port Terminal Block + Power Supply Common - Lock - Door Switch - Port Terminal Block + Power Supply + Fail-Safe Electric Lock Device NOTE: The Transorbs that Keri provides are non-polar; they can be installed in either orientation.. Isolation s For locking devices that may induce heavy voltage spikes Mag Locks and devices with heavy-duty solenoids such as turnstiles, vehicle gates, and overhead doors Keri recommends using isolation relays. Keri has an Isolation Kit (p/n IRP-). Please refer to the IRP- Isolation (p/n 08-00) for detailed information. Page of P/N: Rev. J

3 NXT x.0 Specifications. NXT-x Dimensions x PCB -. inches tall by.0 inches wide by.00 inches deep, not including wiring connectors -. cm by 7.87 cm by. cm x Enclosure inches tall by 7.00 inches wide by.7 inches deep - 0. cm by 7.78 cm by 6.98 cm. Power Requirements 0 to 0. A (maximum current draw for a fully loaded NXT-x). Current Requirements at VDC 0 ma max for each NXT-x NOTE: If you are driving an electronic locking device (magnetic lock, door strike, etc.) using the same power supply as the x, ensure the power supply provides enough current to drive every device connected, including an adequate safety margin.. Contact Rating VDC. Operating Conditions F to 0 F (0 C to 60 C) 0% to 90% Relative Humidity, non-condensing.6 Cable Options RS-8 bus runs can daisy-chain together an NXT-x and NXT-Reader on one line. The total cable run distance should be less than 00 feet from the NXT controller for runs with two Readers or one Reader and one x, and less than,000 feet for single Reader 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 x into an NXT controller. Remove power from the controller prior to connecting these devices. Page of P/N: Rev. J

4 NXT x Table : Reader and x Cable Options Connection Type Total Run Length Minimum AWG Shielded, Stranded, Twisted- Pair a CAT- b Shielded, Stranded, -Conductor c Suggest Suggest RS-8 bus from NXT-D/-D to NXT-x only 00 feet 8 - Power - Data 87 0-S 880ABM-CM RS-8 bus from NXT-D/-D to NXT-x and one NXT Reader or to two NXT Readers 00 feet 8 - Power - Data 87 0-S 880ABM-CM RS-8 bus from NXT-D/-D to one NXT Reader only,000 feet 8 - Power - Data S 80ABM-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 : Controller Power, s, and Outputs Cable Requirements Connection Total Run Length # of Conductors Shielded Stranded Twisted Pair AWG Equivalent controller power earth ground 0 feet a shortest path b N Y Y 8 86 N N n/a 8 no specific requirement inputs and outputs c 00 feet N Y n/a no specific requirement a. To meet CE and C-tick regulations, the length of the controller power line can be no longer than Meters (9.8 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 of P/N: Rev. J

5 NXT x.0 Contact Keri Systems Keri USA 0 Bering Drive San Jose, CA 9 Telephone: (800) 60-6 (08) -800 Keri UK, Ireland, Europe Unit 7 Park Farm Industrial Estate Ermine Street Buntingford Herts SG9 9AZ UK Telephone: + (0) 76 7 Fax: (08) Fax:+ (0) Web: sales@kerisys.com techsupport@kerisys.com Web: sales@kerisystems.co.uk tech-support@kerisystems.co.uk End of document. Page of P/N: Rev. J