Functional description
Page 14 of 45 MSM-BSM2G-BA-UK-001
3.7 Diagnosis
For monitoring and evaluation of the system functions diagnosis information is available by signalling
of errors on the watchdog LEDs and relay contacts.
3.7.1 Watchdog-LED „Self-monitoring“ and Live-relay
The watchdog-LED „self-monitoring“ gives information about the current status of the annunciator
device or system:
Steady light green = no error
Flashing green = initialisation of the annunciator or activated operation mode
( please refer to section 3.7.3)
Flashing red = error
Off = no power supply
From the flashing sequence, an error code can be read which defines the error. A flashing sequence
consists of:
Number of long flashing pulses 1
st
digit of the error code
Number of short flashing pulses 2
nd
digit of the error code
Pause
Example: long, short, short, pause = error code 12
In addition to the watchdog LED “Self-monitoring” the live-relay signalises the operational state of the
annunciator by means of a change-over contact.
Terminal block X2
Contact 11 / 10 closed - power failure or error ( error codes)
Contact 11 / 12 closed - no error
If multiple errors are at issue, the LED displays the error with the highest priority.