User's Guide

Connecting Contact Alarms to a Fusion System
7-54 InterReach Fusion Installation, Operation, and Reference Manual
CONFIDENTIAL D-620610-0-20 Rev B
7.7 Connecting Contact Alarms to a Fusion System
The Fusion Main Hub can generate (source) two contact alarms as well as sense three
external contact alarm.
• Alarm Source (refer to Section 7.7.1 on page 7-55)
The Fusion Main Hub has two alarm contacts, fault (major) and warning (minor).
These contacts are normally-closed (NC) and will open when an internal alarm is
detected.
NOTE: The contact can be changed to normally-open (NO) with Admin-
Browser. This is not recommended since no alarm would be sent if power to
the Fusion Main Hub fails.
• Fault is activated when any faults or disconnects are detected.
• Warning is activated when any warning conditions are detected except lockout
or when the end-to-end system test is not valid.
• Alarm Sense (refer to Section 7.7.2 on page 7-58)
The Fusion Main Hub can monitor 3 external alarm contacts. Each port can be con-
figured for normally-open (NO) or normally-closed (NC) contacts. The interface
expects a set of floating contacts, and an external voltage source is not required for
this interface. Use AdminBrowser to monitor the port status.
Table 7-8 lists the alarm types, equipment to which the Fusion Main Hub is con-
nected, cable(s) used, and the faults and warnings that are detected.
Table 7-8 Alarm Types
Note that MetroReach Focus supports only faults (major errors).
Alarm
Type
Fusion
Connected to Cable(s) Used Errors Detected
Source MetroReach 5-port Alarm Daisy-Chain Cable Faults
Source BTS 5-port Alarm Daisy-Chain Cable Faults and Warnings
In addition, a custom daisy-chain cable-to-BTS interface
cable is required. Make this interface cable to the desired
length and with the appropriate pin placement.
Sense Unison 5-port Alarm Daisy-Chain Cable
and the Alarm Sense Adapter
Cable
Faults