SmartAlarm Instruction Manual Rev 2
Page 17 of 115
Watchdog Monitoring
LED’s
As alarm annunciators are used in safety critical applications it is important
that the functions of the annunciator are monitored and the SmartAlarm is
equipped with an extensive self-diagnostic facility including two green status
LED
’s, in standard mode they provide dynamic monitoring of the logic supply,
field contact supply, and system status. In diagnostic / program mode the
LED
’s allow real time contact status monitoring, manual input type
programming and communications Tx & Rx monitoring.
Test
Mute
Ack
Reset
PSU
WD
1
2
RTK SmartAlarm
Isolate Live Voltage before access
!
1
2
3
4
5
6
7
8
WATCHDOG LED'S
Standard Mode
LED 1 Steady
– Indicates PSU 1 ok and no system faults.
LED 1 Fast flash - Indicates general system fault. System fault combines
card, contact, communication and structure faults.
LED 2 Steady - Indicates PSU 2 ok.
LED 2 fast flash
– Indicates Field contact fault.