AMX DAS-MET-NUM, Operation/Reference Manual

Page: 29 / 92

Wiring and Connections
21 Metreau Keypads
Using AxLink for Data with an Auxiliary Power Supply
Use an auxiliary 12 VDC power supply when the distance between the controller and server exceeds the
limits described in the
AxLink Wiring Guidelines . Connect only the GND (-) wire on the AxLink
connector when using an auxiliary 12 VDC power supply.
Connect the NetLinx Controller’s AxLink connector to the AxLink connector on the rear panel of the
Metreau keypad, as shown in FIG. 19.
AxLink Status LED
The AxLink Status LED (located next to the AxLink connector), lights to indicate AxLink power/data
status as follows:
If the LED is on and not flashing, disconnect the AxLink connector and recheck all AxLink connections.
Then, reconnect the AxLink connector to the panel and verify the LED is flashing once per second.
FIG. 19 AxLink and 12 VDC power supply wiring diagram
12 VDC power supply
PWR (+)
AXP
AXM
GND (-)
Metreau keypad NetLinx Controller
PWR (+)
AXP
AXM
GND (-)
PWR (+)
GND (-)
If you are not using power from AxLink, disconnect the wiring from the controller
before wiring the Metreau keypad. Make sure the auxiliary power supply’s PWR (+) is
not connected to the controller’s AxLink connector.
AxLink LED Status
• 1 blink per second: Indicates power is active and AxLink communication is working.
• Full On: Indicates the following conditions:
• There is no AxLink control or activity, but power is On.
• The Axcess program is not loaded.