Wiring and Connections
31
Hardware Reference Guide - NX-Series NetLinx Integrated Controllers
AxLink Port and LED (4-pin captive-wire)
The AxLink port allows the central controller to support AMX AxLink devices.
FIG. 26 displays the AXLINK ports for each NX-series controller.
FIG. 26
AxLink Ports and LEDs
The (green) AxLink LED indicates AxLink data activity:
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 the maximum current draw is
less than 1.5 Amps on the NX-1200 and NX-2200, and 3 Amps on the NX-3200 and NX-4200. To isolate the central controller from
high in-rush current, AxLink devices, or potential power faults on the AxLink bus, it is strongly recommended that you power
external AxLink devices from an independent power supply.
NOTE:
The AxLink port provides only limited power to connected AxLink devices. It is recommended to use an alternate power source
when connecting AxLink devices to the central controller.
IMPORTANT:
The NX-Series controllers CANNOT be powered via the AxLink port. The +12V pin on the AxLink connectors are designed
only for voltage output. Do NOT c12V from a power supply or the NXA-PDU to the +12V pin on the AxLink connectors, or you
may permanently damage the NX controller and/or the power supply.
The NX-3200 and NX-4200 each have two AxLink connections. These are two connection points for the same AxLink bus. All AxLink
devices connected to the controller must have unique AxLink device numbers even if they are attached to different AxLink
connection points on the controller.
While it is one AxLink bus, the power on these two AxLink connections is controlled independently.
Refer to the following table for the wiring length information used with the central controller:
FIG. 27 provides wiring requirements for the AxLink connector:
FIG. 27
Mini-Phoenix connector wiring diagram (direct data and power)
Wiring Guidelines
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)
NX-3200/4200
NX-2200
NX-1200
Top view
Top view
To the Controller’s
AxLink/PWR connector
To the external AxLink device
