Connecting Contact Alarms to a Unison System
7-46
InterReach Unison Installation, Operation, and Reference Manual
CONFIDENTIAL
D-620003-0-20 Rev J
7.7.2
Alarm Sense
Use AdminManager to enable the Unison system for “alarm sense” when connecting
to the contact closure of LGCell Main Hubs or other external alarms (refer to Set
Contact Sense Properties in the
AdminManager User Manual
).
Using Unison to Monitor LGCells
When you connect LGCell to Unison, the Unison Main Hub is the input of the alarms
(alarm sense) and the LGCell is the output (alarm source), as shown in Figure 7-15.
Figure 7-15
Connecting LGCell to Unison
LGCell supports only faults (major alarms). You must use the Alarm Sense Adapter
Cable (refer to page 7-50) to interface the daisy-chain cable to Unison. The adapter
cable is required because it translates the LGCell fault pinout to the sense input pins
on the Unison Main Hub.
Figure 7-16
Alarm Sense Contacts
Up to 5 LGCell Main Hubs
Unison Main Hub
Alarm
Sense
Alarm
Source
Alarm
Source
Alarm Sense
Adapter Cable
5-port Alarm Daisy-Chain Cable
8
1
Diagnostic I
External
Equipment
Contacts
+5V
