It is not possible to use 100 % of a device's memory space. About 10 % of the
total available space must remain unused at any time to maintain normal device
operation.
Further information on using the memory card in AC500 PLCs is provided in the chapter .
Part no.
Description
Product life cycle phase *)
1SAP 180 100 R0041
MC5141, memory card
Active
*) Modules in lifecycle Classic are available from stock but not recommended
for planning and commissioning of new installations.
1.8.2.4
TA521 - Battery
● Manganese dioxide lithium battery, 3 V, 560 mAh
● Non-rechargeable
The TA521 battery is the only applicable battery for the AC500 processor modules
1.3.2.1 “PM56xx-2ETH for AC500 V3 products” on page 90
. It cannot be recharged.
The processor modules are supplied without lithium battery. It must be ordered separately. The
TA521 lithium battery is used for data (SRAM) and RTC buffering while the processor module is
not powered.
See system technology - AC500 battery.
The CPU monitors the discharge degree of the battery. A warning is issued before the battery
condition becomes critical (about 2 weeks before). Once the warning message appears, the
battery should be replaced as soon as possible.
● Do not short-circuit or re-charge the battery! It can cause excessive heating and explosion.
● Do not disassemble the battery!
● Do not heat up the battery and not put into fire! Risk of explosion.
● Store the battery in a dry place.
● Replace the battery with supply voltage ON in order not to risk data being lost.
● Recycle exhausted batteries meeting the environmental standards.
Ordering data
Purpose
Handling
instructions
Device specifications
Accessories > AC500 (standard)
2022/01/31
3ADR010278, 3, en_US
897
