Keri Systems NXT-4R - Manual

NXT-4R Reader
Installation Guide
Page 1 of 2 P/N: 01999-003 Rev. A
Section 1 – Wiring and Layout Diagrams
Section 2 – Specifications and Cable Options
Section 3 – Keri Contact Information
1.0 Wiring and Layout Diagrams
1.1 NXT-4R Reader
• 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.
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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.
• Changes to this equipment not expressly approved by Keri Systems, Inc. may void FCC certification and the user’s authority to operate
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this equipment.
• Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference,
including interference that may cause undesired operation of the device.
2.0 Specifications
2.1 NXT-Reader Dimensions
• NXT-4R Vandal Resistant Prox Reader
-
5.25 inches tall by 2.0 inches wide by 0.75 inches deep, not including wiring connectors
- 13.3 cm by 5.1 cm by 1.9 cm
2.2 Power/Current Requirements
• 10 to 14 VDC @ 85 mA (maximum current draw at 12 VDC)
2.3 Operating Conditions
• -40°F to 150°F (-40°C to 65°C) – 0% to 90% Relative Humidity, non-condensing
2.4 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.
NXT-4R Cabling Drawing
4-Conductor - OR - CAT-5 Cabling
IO-Minus (White)
IO-Plus (Green)
Ground (Black)
+12 VDC (Red)
Shield (Silver)
Brown/Green/Orange
Brown/Green/Orange - with Stripe
Blue
Blue with Stripe
Shield (Silver)
total cable length
1,000 feet (300 m) max
Reader
Body
Shielded 4-Conductor Cabling Shielded CAT-5 Cabling
P/N: 01999-004 - Rev. B