Chapter 1: Installation and wiring
P/N 3102352-EN • REV 005 • ISS 28DEC18 17
Alarm, trouble, and supervisory relay wiring (TB3)
The control unit provides three pre-programmed common event relays for alarm, supervisory,
and trouble events. These relays are not field configurable.
• The trouble relay changes over on any trouble event (common trouble)
• The supervisory relay changes over on any supervisory event (common supervisory)
• The alarm relay changes over on any alarm event (common alarm)
Note: Relay circuits can only be connected to power-limited sources. Relays are not
supervised.
Relay specifications
• Alarm and trouble: Form C, 24 VDC at 1 A resistive, Class E
• Supervisory: Form A, 24 VDC at 1 A resistive, Class E
Figure 21: Terminal wiring location
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