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Siemens PXC....D PXC...-E.D + PXA40-… – Automation stations modular series CM1N9222en_03
Building Technologies 16 Mar 2010
Maintenance
Database information is stored in SDRAM which is supported by a battery
(Alkaline AA). This saves time for reloading the program and database after
longer power outages (up to approx. 1 month).
Alkaline batteries usually have a life span of at least four years.
After the “Battery low” event, the battery still has a residual life of a few more days.
The Real-Time Clock is supported by a lithium battery with a life span of at least
10 years.
The Low BAT LED lights up when one of the batteries charges is low and the
automation station automatically sends a system event.
It can also be set as an alarm to selected recipients.
To change the battery remove the front cover. The battery can be removed
indefinitely as long as the unit has power.
A wrist-strap and grounding cable must be used to avoid hardware damage
through electrostatic discharge (ESD).
Firmware and operating system stored in non-volatile Flash ROM. Flash ROM
memory can be easily updated on the plant, when a new firmware version is
available.
Disposal
The devices are classified as waste electronic equipment in terms of the
European Directive 2002/96/EC (WEEE) and should not be disposed of as
unsorted municipal waste.
The relevant national legal rules are to be adhered to.
Regarding disposal, use the systems setup for collecting electronic waste.
Observe all local and applicable laws.
Battery life
Replacing the battery
STOP
Caution
Firmware upgrades
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