Power Connections - Honeywell ALERTON ACM-VLX Installation And Operation Manual

Installation and Operations Guide

Power connections

VLXs, ACM-VLXs, EXPs, and AXMs use removable, header-style terminal blocks to simplify
field wiring of power, communications, and I/Os. If desired, you can remove the terminal blocks
from the circuit board header pins, terminate cable, and re-seat the block when you finish.
Fig ure 17 Te rminal block de tail

To te rminate c able to a VLX, ACM-VLX, EXP, o r AXM
1. Strip a maximum of 3/8" (0.95 cm) of the wire jacket from the end of the cable.
2. Use a small screwdriver (1/8'' max.) to turn the adjustment screw fully counter-
clockwise.
The clamps in the wire slot separate as you turn the screw.
3. When the clamps in the wire slot are fully open, insert the stripped end of the cable (try
to get the jacket flush with the terminal block). Be sure to insert all cable strands into
the wire slot.
4. Hold the cable in place and turn the adjustment screw clockwise to tighten it until the
clamps in the wire slot secure the cable.
5. Tug gently on the cable to ensure that it's securely terminated.
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ACM-VLX/VLX/EXP/AXM
This topic provides information for wiring power to a VLX/EXP/AXM
assembly. As a general rule, use one transformer to supply power to the VLX
and EXPs/AXMs and use one or more additional transformers to power BOs on
the EXPs/AXMs See "Key illustrations" on page 6 for wiring diagrams.
The ACM is a full wave device so it must have its own dedicated
WAR NING
transformer.
VLXs, EXPs, and AXMs use a half-wave rectifier to convert the AC power
supply to onboard power. This enables several VLXs, EXPs, and AXMs to be
powered from a single transformer. Ensure that the transformer is sized
appropriately to handle the VLX, EXPs, and AXMs. See "Transformer sizing"
on page 28 for transformer sizing procedures.
Us ing te rminal blo c ks
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