User manual

Electrical Installation and Cabling
Management Cables
5-12 July 2004 Wide Bank 28 DS3 - Release 2.4
External Alarm Wiring
The external alarm contacts can be wired to a remote alarm panel to indicate alarm conditions on
the Wide Bank 28 DS3. The figure shows an example of how to wire the contacts. The external
alarm contacts can be programmed for either normally open or normally closed operation, using the
CLI command alarmout {no|nc}. In either case, when the Wide Bank is not powered, the alarm
contacts will be open. There is no voltage present on these contacts until they are connected to an
external voltage source. See figure for maximum contact ratings.
Figure 5-10 External Alarm Wiring
Alarm Connector
Normally Open Contacts
Closed when Activated
Contacts rated:
200 mA @ 56 V DC
Alarm
Panel
Major/Minor
Alarm
Critical
Alarm
Normally Closed Contacts
Open when Activated
(Open when Power Is Off)
Contacts rated:
200 mA @ 56 V DC
Alarm
Panel
Major/Minor
Alarm
Critical
Alarm
MJ/MN
Critical
MJ/MN
Critical
Cable