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2.8. Connecting External Alarms
2.8.1 Overview
Two SPDT relays are available for the connection of external alarm devices. These alarms are
useful for alerting the user to global conditions anywhere on the network. Each relay can be
programmed to respond to alarm, fault, or ready conditions.
2.8.2 Connection
Use the AC conduit or any of the remaining service knockouts to gain access to the interior of the
MZ-RD. Locate the relay connectors and remove them from the circuit board. Secure the wire
leads to the connectors orienting them as shown in the diagram below. After connections are
secured, carefully plug the connectors back onto the circuit board.
NOTE: Each relay can be connected as normally open (NO), or normally closed (NC).
NOTE: Power for the external alarms can be tapped off the AC IN connector.
NOTE: The relay contacts are rated 2A at 250VAC (inductive) and 5A at 250VAC
(resistive).
Instruction 3015-5157
MZ-RD Relay Connector
MZ-RD – Multi-Zone Remote Display
9
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