Panasonic MEW01777 Operating Instructions Manual page 69

Panasonic Eco Solutions Nordic AB
MEW01777 Rev: - Operating Instructions Fire alarm system EBL512 G3, V2.2.x
700 mV.

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
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
th
is performed every 4
status will be "corrected".
FAULT: Low voltage, control unit xx
System voltage < 21.6 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. NOTE! A control unit powered by the
back-up battery only will shut down at a battery voltage of 18 V, in
order not to damage the battery.
FAULT: Low voltage, output unit xxxxxx
System voltage < 21 V DC in the external power supply unit 3366.
Check the power supply (rectifier) 1537 output voltage, which shall be
24 V DC. Replace 1537 if required.
FAULT: Mains, control unit xx
The fault is activated 1-300 minutes

Loss of mains, i.e. no 230 V AC

Blown mains fuse.

Blown fuse F1 on main board 5010. Fuse T6.3A H 250V
(5x20 mm ceramic).
28
The time is programmable via EBLWin. Max. 30 min. according to the
EN54-2 standard. Default value depending convention.
67
hour, i.e. it can take up to 4 hours until the fault
28
after:
th
hour. A battery