Connections and Wiring
22
NI-2100, NI-3100, NI-4100 Hardware Reference Guide
AxLink Port and LED
All NI Controllers have an AxLink port and adjacent status LED (FIG. 8). This port allows the NI to support
AMX Legacy AXlink devices such as G3 touch panels (ex: CP4/A) and PosiTrack Pilot devices. A green LED
shows AXlink data activity. When the AXlink port is operating normally, blink patterns include:
Off - No power, or the controller is not functioning properly.
1 blink per second - Normal operation.
3 blinks per second - AXlink bus error. Check all AXlink bus connections.
The AXlink port can be used to supply power to downstream AXlink-compatible devices as long as both the
power required is LESS THAN 2 Amps total and the external power supply feeding the NI unit has the
necessary power capability.
Wiring Guidelines
The Integrated Controllers use a 12 VDC-compliant power supply to provide power through the rear 2-pin 3.5
mm mini-Phoenix PWR connector. Use the power requirements referenced in the product’s Specifications
table to determine the power draw.
The incoming PWR and GND cable from the power supply must be connected to the corresponding locations
within the PWR connector.
Wiring length guidelines
Refer to the following tables for the wiring length information used with the different types of NetLinx
Integrated Controllers:
FIG. 8 AXlink connector and LED
This unit should only have one source of incoming power.
Using more than one source of power to the Controller can result in damage to the
internal components and a possible burn out.
Apply power to the unit only after installation is complete.
Wiring Guidelines - NI-2100 (@ 700 mA)
Wire size Maximum wiring length
18 AWG 154.83 feet (47.19 meters)
20 AWG 98.30 feet (29.96 meters)
22 AWG 63.40 feet (19.32 meters)
24 AWG 38.68 feet (11.79 meters)
Wiring Guidelines - NI-3100 & NI-4100 (@ 900) mA
Wire size Maximum wiring length
18 AWG 120.41 feet (39.70 meters)
20 AWG 76.45 feet (23.30 meters)
22 AWG 49.36 feet (15.04meters)
24 AWG 30.08 feet (9.17 meters)
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