FRM220 Chassis Quick Installation Guide
37
DC
Alarm 1 Alarm2
Programmable alarm relays
AC
FRM220-CH20
Light, Visual Alarm
Siren, Audible Alarm
Alarm Installation
The alarm relay provides one set of Power Failure contacts (normally open) and another set of FAN
Failure contacts (normally open) contacts for monitoring the power and fans condition of the
FRM220
.
The alarm contacts may also be programmed through the management interface to react to different
fault conditions.
Figure. Alarm Relay Contacts and Cascade Ports
Figure. Example of electrical circuit for visual and audible alarms
125VAC
1A
110VDC
0.6A
30VDC
4A
IN OUT
Alarm Contacts
1 2
Chassis ID
Cascade Ports
