APC ACPA4000 manual Relays and Contacts, Overview, Output relays

Relays and Contacts

Overview

The controller board provides connectors for output relays and input contacts. The connectors can be used with any dry-contact sensors. The connectors are designed to monitor circuits that have no voltage potential of their own. Connecting the contact or relay to any circuit other than a dry closure connector may result in damage to the main control board.

You can connect any normally open (NO) or normally closed (NC) dry contact sensor, including:

•magnetic contact switches

•window foil

•tamper switches

•heat detectors

•water sensors

•pressure sensors

•smoke detectors

Output relays

This figure shows the four positions on the output relay connector and provides the individual pin assignments for each position.

NC

COM

NO

NC

COM

NO

NC

COM

NO

NC

COM NO

Position 1

Position 2

Position 3

Position 4

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Note: The terminal block accepts wire sizes from 1.6mm2 (14AWG) to 0.4mm2 (26AWG).

Electrical Hazard: Control board connections should be made only to Class 2 circuits.

NetworkAIR ACPA4000 13