Startup and Maintenance
42
9.7.1 Exchange of the Buffering Batteries
For buffering lithium batteries are used.
Lifetime of the buffer batteries (CPU not in operation, modules without voltage feeding):
1000 days at T
A
= 25 °C,
200 days at T
A
= 60 °C
It is recommended to change the buffer batteries (CPU in operation, modules with voltage
feeding) at the latest after 6 years.
Changing of external batteries of the systems H41q/H51q:
1. Battery without soldering lug:
CR-1/2 AA-CD, HIMA part no. 440000019.
Remove battery cap, loose battery out of the holder and plug in new battery. Check the po-
larity!
2. Battery with soldering lug: CR-1/2 AA-CD, HIMA part no. 440000016
Solder battery out of holder (first + pole then - pole). At solder in check the correct polarity
and first solder the - pole then the + pole.
External batteries of the systems H41q: Backplane of the bus plate
Dependent on the battery type changing as described above.
External batteries of the systems H51q: Power supply monitoring module F 7131
The module can be pulled out in the energized state. Then change the battery as described
above. Check the polarity!
Central modules: F 8650E / F 8650X, F 8651E / F 8651X, F 8652E / F 8652X,
F 8653E / F 8653X
Battery: CR 2477N, HIMA part no. 44 0000018
It is recommended to change the buffer battery (CPU in operation, modules with voltage feed-
ing) at the latest after 6 years, or with display BATI within three months.
Further informations you will find in chapter “How to Insert and to Remove Modules“. For single
channel systems this results of course in a shutdown of the plant, in redundant systems the
system reaction depends on the configuration.
Coprocessor module F 8621A
This module may be installed as an option within the central rack of the H41q/H51q system
family. At H41q system the coprocessor module is buffered via the batteries on the backplane,
at H51q system this is done by batteries on the F 7131 power supply monitoring module. A
coprocessor module is needed to hold the master program for controlling the communication
between PES systems (slaves).
For battery change the central module has to be pulled out of the sub-
rack!
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