Panasonic Electric Works Nordic AB
MEW01349
Rev: -
Operating Instructions Fire alarm system EBL512 G3, V1.1.x
60
fire alarms in the system.
FAULT: L-C mixed COM-loop x,
control unit xx
The two wires L (SA) and C (SB) for COM-loop no. x (0-3), in control
unit no. xx, have been mixed (alternated). Check / correct the wire
connections.
FAULT: Loop unit zone: xxx address: xx
technical number xxxxxx
The unit (not a detector) is
not
all right, i.e. the unit is out of order /
faulty. The unit has to be replaced.
FAULT: Low battery capacity,
control unit xx
Battery (in control unit no. xx) internal resistance > 0.6 Ω.
The battery might be too old.
Cables, fuses etc. for externally placed batteries might
cause a voltage drop.
Check / adjust the rectifier (power supply) voltage (24 V
DC).
Check the charging voltage over the battery respectively
(13.5-13.8 depending on the actual charging step).
Check the voltage over a disconnected battery (fully
charged > 13 V).
In the New Zealand convention only
: The battery
charging is turned off 60 minutes every 24
th
hour. A battery
voltage
< 24.4 V during these 60 minutes will generate a fault.
If a fault is generated it will automatically be
Serviced
after
these 60 minutes.
The battery should normally be replaced.
NOTE!
The battery check
is performed every 12
th
hour, i.e. it can take up to 12 hours until the
fault status will be "corrected".
FAULT: Low voltage, control unit xx
System voltage < 21 V DC, in control unit no. xx. Check the power
supply (rectifier) 5037 output voltage, which shall be 24 V DC.
Replace 5037 if required.
