ABB AC500 PLC Hardware Manual page 1156

Device Specifications
Accessories > AC500 (Standard)
6.
1.8.2.5.2 Replacement
1.
2.
1.8.2.6 TA543 - Screw Mounting Accessory
Intended Pur- The TA543 screw mounting accessory is used for mounting the processor module PM595
Ä Chapter 1.2.1.2 "Onboard I/Os in Processor Module PM55x" on page 37 without DIN rail.
pose
Handling 3x TA543 must be snapped on the backside of PM595
Instruction Demounting the Processor Module PM595" on page 1266.
1156
Re-assemble the front cover / display by pressing it straight from the front until it snaps in.
In order to prevent data losses or problems, the battery should be replaced after
3 years of utilisation or at least as soon as possible after receiving the "low bat-
tery warning" indication.
Do not use a battery older than 3 years for replacement, do not keep batteries
too long in stock.
For PM595-4ETH-F only: battery replacement should be done with the system
under power. Without battery and power supply there is no data buffering pos-
sible.
For PM595-4ETH-M-XC only: battery only back-ups the real-time clock.
Remove the front cover / display by pressing the marked areas and pull it to the front.
Remove the old battery from the battery compartment by pulling it by the small cable.
Remove then the small connector from the socket, do this best by lifting it out with a
screwdriver.
Follow the previous instructions to insert a new battery.
CAUTION!
Risk of explosion!
Do not open, re-charge or disassemble a lithium battery. Attempts to charge
lithium batteries lead to overheating and possible explosions.
Prevent them from heat and fire and store them in a dry place.
Never short-circuit or operate lithium batteries with the polarities reversed. The
batteries are likely to overheat and explode. Avoid chance short circuiting and
therefore do not store batteries in metal containers and do not place them on
metallic surfaces. Escaping lithium is a health hazard.
3ADR010121, 13, en_US
Ä Chapter 2.6.3.3 "Mounting and
2019/04/17