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13NetworkAIR ACPA4000
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.
Note: The terminal block
accepts wire sizes from 1.6mm
2
(14AWG) to 0.4mm
2
(26AWG).
Electrical Hazard: Control board connections should be made only to Class 2 circuits.
NC
COM
NO
NC
COM
NO
NC
COM
NO
NC
COM
NO
na0342a
Position 1
Position 3
Position 4
Position 2