Led Display Block - Siemens Cerberus MN7002 Manual

3.2

LED display block

a) Battery operation and
symmetry monitoring
b) Battery operation without
symmetry monitoring
c) Operation with external
voltage (instead of battery)
d) Operation without battery
or external voltage
6
Fire & Security Products
Siemens Building Technologies Group
É
É
yellow "Trouble power supply"
É
H1
green "Mains operation"
yellow "Trouble battery"
É
yellow unused
H2
É É
Indicators vary in meaning according to operating mode:
LED "Trouble power supply"
– Fuse F1 / F2 / F3 blown
– Input voltage >31.0V → converter malfunction
– Battery voltage >29.5V or <25V → charging module malfunction
– Battery charging module malfunction
– Temperature sensor open line / short circuit
– Temperature sensor measures >55°C
– EEPROM check sum error
LED "Power on"
– Input voltage >28.5V
LED "Trouble battery"
– Battery voltage <23V
– Asymmetry >1.0V or fuse F12 blown
– Eventually cell short circuit
– Open line to battery or fuse F11 / F13 blown
– Autom. test to indicate battery presence negative
– Autom. battery load test negative
LED "Trouble power supply"
– Fuse F1 / F2 / F3 blown
– Input voltage >31.0V → converter malfunction
– Battery voltage >29.5V or <25V → charging module malfunction
– Battery charging module malfunction
– Temperature sensor open line / short circuit
– Temperature sensor measures >55°C
– EEPROM check sum error
LED "Power on"
– Input voltage >28.5V
LED "Trouble battery"
– Battery voltage <23V
– Open line to battery or fuse F11 / F13 blown
– Autom. test to indicate battery presence negative
– Autom. battery load test negative
LED "Trouble power supply"
– Fuse F1 / F2 / F3 blown
– Input voltage >31.0V → converter malfunction
– EEPROM check sum error
LED "Power on"
– Input voltage >28.5V
LED "Trouble battery"
– Battery voltage or external voltage <23V or >31.0V
– Autom. presence test (external voltage) negative or fuse F11 / F13 blown
LED "Trouble power supply"
– Fuse F1 / F2 / F3 blown
– Input voltage >31.0V → converter malfunction
– EEPROM check sum error
LED "Power on"
– Input voltage >28.5V
LED "Trouble battery"
– no function
e1493d
04.2002