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Output Circuits; 1: Relays; Mns Active Relay - Tb1; Trouble Relay - Tb2 - Honeywell ECC-50/100 Instruction Manual

Emergency command center, multipurpose emergency voice evacuation panels.
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2.6 Output Circuits

2.6.1 Relays

MNS Active Relay - TB1

The main control board provides a Form-C MNS Active relay.

Trouble Relay - TB2

The main control board provides a Form-C Trouble relay for independent, general system fault
monitoring. This relay is 'fail safe', meaning that it is normally energized. Should system power
shut off, this relay will de-energize, transferring its contacts. The Trouble Relay can be pro-
grammed to track the AC Loss Relay and transfer on AC loss conditions or ignore AC loss condi-

AC Power Loss Relay - TB3

The main control board provides a Form-C AC Power Loss relay.
Figure 2.12 MNS Active Relay
Shown in energized,
non trouble condition
Figure 2.13 Trouble Relay
Figure 2.14 AC Power Loss Relay
Emergency Command Center Manual — P/N LS10001-000FL-E:G 5/3/2016
Shown in normal,
Inactive condition
Shown in normal
AC Power condition
Output Circuits


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