SBC PCD1.Room - 8 Maintenance; General Information; Battery Replacement for the PCD1.M2; Maintenance 8.1 General Information

Hardware Manual PCD1.M2110R1 │ Document 27-619 │ Version ENG 04 │ 2018-08-20
Saia-Burgess Controls AG
Battery Replacement
Maintenance
8-1
8
8 Maintenance
8.1 General Information
PCD1.M2_ controllers are maintenance-free, apart from the CPUs, where
the battery needs to be changed occasionally.
PCD1 CPUs do not contain any parts which can be replaced by the user.
If hardware problems occur, please return the components to Saia-Burgess
Controls AG.
8.2 BatteryReplacementforthePCD1.M2_
Resources(registers,ags,timers,counters,characterstrings/DBs,etc.)are
stored in RAM. To prevent this content from being lost during a power failure, and
to enable the hardware clock (if present) to carry on running, PCD1 devices are
equipped with a back-up battery:
CPU model Bu󰀨er Bu󰀨ertime
Image
PCD1.M2_ Renata CR 2032 lithium battery 1-3 years
1)
1)
Dependingontheambienttemperature:thehigherthetemperature,theshorterthebu󰀨ertime
Battery voltage is monitored by the CPU. If the battery is absent or capacity is
lost (battery voltage less than 2.4V) the triangular yellow LED blinks and XOB 2 is
called.
In order to prevent data loss, we recommend changing the batteries while
the PCD1.M2_ is still connected to the power supply.
See next page for battery replacement procedure.