AMX DAS-MET-NUM, Operation/Reference Manual

Page: 28 / 92

Wiring and Connections
20 Metreau Keypads
AxLink Wiring Guidelines
Metreau keypads require 12 VDC power to operate properly. The necessary power is supplied via the
AxLink cable. The maximum AxLink wiring distance is determined by power consumption, supplied
voltage, and the wire gauge used for the cable. The following table lists wire sizes and the maximum
lengths allowable based on the maximum power consumption rating of 170 mA.
The maximum wiring lengths for using AxLink power are based on a minimum of 13.5 volts available.
Preparing Captive Wires
You will need a wire stripper, and flat-blade screwdriver to prepare and connect the captive wires.
1.
Strip 0.25 inch (6.35 mm) of wire insulation off all wires.
2. Insert each wire into the appropriate opening on the connector according to the wiring diagrams and
connector types described in this section.
3.
Turn the flat-head screws clockwise to secure the wires in the connector.
AxLink Data and Power Connections
Connect the NetLinx Controller’s AxLink connector to the AxLink connector on the rear panel of the
Metreau keypad for data and 12 VDC power as shown in FIG. 18.
Wiring Guidelines at 170 mA
Wire Size Maximum Wiring Length
18 AWG 690.42 feet (210.43 m)
20 AWG 436.80 feet (133.13 m)
22 AWG 272.33 feet (83.00 m)
24 AWG 171.66 feet (52.32 m)
Do not over-torque the screws; doing so can bend the seating pins and damage the
connector.
FIG. 18 AxLink straight-thru wiring
PWR (+)
AXP
AXM
GND (-)
Metreau keypad NetLinx Controller
PWR (+)
AXP
AXM
GND (-)