14. Maintenance
14.1 PCM3.1 internal battery
14.1.1 Changing the battery
The controller has a replaceable battery located in the PCM3.1 module. When the power is low or fails on this battery, a battery
failure alarm is activated. To replace the battery, you need to remove the PCM module.
More information
See
Hardware
,
Controller hardware
,
Processor and communication module PCM3.1
in the
Data sheet
for more
information regarding the type of battery.
Legal
INFO
The manufacturer's warranty will not apply if the rack has been opened by unauthorised persons. However, you are
allowed to replace the battery on the PCM3.1 module. To retain the warranty, the battery must be replaced by a qualified
person, in accordance with these written instructions.
Safety: Hazardous live currents and voltages
DANGER!
Hazardous live currents and voltages may be present in a rack that is already installed. Contact with these could kill you.
Only authorised personnel, who understand the precautions needed and the risks involved in working with live electrical
equipment, may do this work.
Safety: Disrupting control
DANGER!
Working on the rack may disrupt the control of the generator, busbar or connection. Take the necessary precautions.
Protecting equipment: No hot swapping
CAUTION
Disconnect all power supplies before replacing the battery.
Electrostatic precautions
CAUTION
Protect the hardware modules against static discharge during the battery replacement.
Replacing the battery
1. Disconnect all power supplies (that is, both PSM and, if present, EIM), to protect the hardware modules and personnel.
2. Optional: Test the resistance of the wrist strap and the resistance of the wrist strap connection. Do not continue if the wrist strap
connection is faulty. Use the wrist strap at all times while replacing the battery to protect against static discharge.
3. Remove the PCM3.1 hardware module from the rack:
a. Remove the terminal blocks, and make sure that there are no wires in the way of removing the hardware module.
•
Disconnect any Ethernet cables from the top, middle or bottom of the hardware module.
b. Loosen the hardware module faceplate screws using a screwdriver with a TX20 bit.
•
Do not force the screws to unscrew completely. The screws are built-in and therefore normally remain attached to the
faceplate.
c. Use pliers to pull the faceplate screws, and carefullly slide the hardware module out of the rack.
•
Only pull the screws. Do not pull any other part of the faceplate.
d. Hold the hardware module by the faceplate when handling.
e. Remove the old battery from the holder, taking care not to damage any components.
f. Insert the correct replacement battery in the correct polarity into the holder, taking care not to damage any components.
OPERATOR'S MANUAL 4189341099G UK
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