TOUCH OPERATING PANEL
HZS 7321
04.09.2020
Page 43
16 Buffer Battery
The exchangeable buffer battery ensures that the clock time (RTC) and SRAM data of the
HZS 7321 is preserved in the absence of a supply voltage. A lithium battery is installed at the
manufacturer.
After delivery of the HZS 7321 and storage of one year, the lifespan of the battery reaches
10 years, if it can be assumed that the module is continually in operation (connected to supply
voltage).
We recommend however, that the battery be replaced every 8 years to ensure optimal per-
formance.
If the module is not powered for a period of 2 years, the battery is emptied.
Battery order number: 01-690-055
Use batteries from RENATA with the label CR2032 only!
Company
Data
Lithium battery CR2032
RENATA
3.0 V/235 mAh
WARNING
Danger of fire and explosion!
Slight to serious injuries can occur from incorrect use of the battery.
Do not recharge, disassemble or throw batteries into fire!
If the battery voltage is located between both thresholds of the monitoring switch, the battery
can be detected as good during operation, but as low after turning off and on. If this is the
case, it is recommended that the battery be replaced.
