3 Replacing the battery
Three versions buffer battery are used the REG-DP Depending the version and
year manufacture the device, the batteries are used for different purposes (see case
descriptions this chapter).3. This means that the battery does not have re-
placed regular intervals. This doesn't have but can done devices equipped with MRAM.
In general, the battery voltage monitored and alarm set off (status relay sta-
tus/operating LED) information (output function for weak battery) generated when the
battery shows low residual capacity.Page 259
Maintenance/Cleaning
17.
To replace the battery, first remove the plastic protective cover the CPU board. Loosen
the four screws and remove the cover. Battery replacement can also event-based.
The below delivery times are approximate. The battery not actively used long the device pow-
ered auxiliary voltage.6
DANGER! Danger electric shock!
Injury death
When replacing the fuse, disconnect the device from all power supplies
(auxiliary voltage, control voltages). Please check the battery type the device. Once the battery has been changed, put the cover
back on.
. result repairs, for example, old devices
may need new CPU circuit board. For more in-
formation backing and restoring parameters, see Chapter 10. The battery serves backup the auxiliary voltage fails.2.
Regardless the type battery, the parameters should saved quickly possible in
the event battery failure and always before the device disconnected from the supply
voltage
