SBC PCD1.Room - Battery

Hardware Manual PCD1.M2110R1 │ Document 27-619 │ Version ENG 04 │ 2018-08-20
Saia-Burgess Controls AG
Earthing Concept and Power Supply
Orientation
2-12
2
2.4 Battery
Resources(registers,ags,timers,counters,etc.)characterstrings(TEXT)and
data blocks (DBs) are stored in the RAM. In order to prevent these from being
lost, and to enable the hardware clock to carry on running during a power failure,
PCD1.M2_ devices are equipped with a back-up battery:
CPU model Battery Bu󰀨ertime
PCD1.M2_ Renata CR2032 lithium battery 1…3 years
1)
1)
 Thehighertheambienttemperature,theshorterthebu󰀨ertime
CPUs with lithium batteries are not maintenance-free. The battery voltage
ismonitoredbytheCPU.Ifthebatteryvoltageis≤2,4Vorthebatteryisabsent,
the CPU attempts to start the XOB2. If this is not included in the program,
the ERROR LED (yellow) begins to blink with a frequency of 500 ms.
Thebatteryisincludedandmustbettedduringcommissioning.Forinstructions,
see chapter 8 Maintenance.
Battery replacement
See chapter 8 Maintenance.