User's Manual

PN 9000-10 Help Hot Line (U.S. only): 1-800-530-9960 6-29
620021-0 Rev. A
6.6 Connecting Contact Alarms to an Accel System
The Accel Hub can generate (source) two contact alarms as well as sense an external
contact alarm.
• Alarm Source (see Section 6.6.1 on page 6-30)
The Accel Hub has two alarm contacts, fault (major) and warning (minor). These
contact are normally-closed (NC) and will open when an internal alarm is detected.
• 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 (see Section 6.6.2 on page 6-33)
The Accel Hub can monitor an external alarm contact. The port can be configured
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 inter-
face. AdminManager is used to monitor the port status.
The following table lists the alarm types, equipment that Accel is connected to,
cable(s) used, and the errors (major and/or minor) that are detected.
Note that LGCell and MetroReach Focus support only faults (major errors).
Do not mix LGCell and Unison Accel Hubs in the same daisy-chain. You can
daisy-chain multiple LGCell Main Hubs together and use the Alarm Sense Adapter
Cable to connect the chain to a Unison Accel Hub, which will act as an alarm sensor.
Alarm
Type
Unison
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 LGCell 5-port Alarm Daisy-Chain Cable
and the Alarm Sense Adapter
Cable
Faults