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MELSEC-Q
7 MEMORY CARD AND BATTERY
7.2 Battery Specifications (For CPU Module and SRAM Card)
(1) For CPU module
Type
Item
Q6BAT
Classification
Manganese dioxide lithium primary
battery
Initial voltage 3.0V
Nominal current 1800mAh
Storage life 10 years (room temperature)
Total power failure time Refer to Section 10.3.1.
Application
Power failure backup for program
memory, standard RAM and latch
devices
(2) For SRAM card
Type
Item
Q2MEM-BAT
Classification Graphite fluoride primary battery
Initial voltage 3.0V
Nominal current 48mAh
Storage life 5 years (room temperature)
Total power failure time Refer to Section 10.3.1.
Application Power failure backup for SRAM card
REMARK
Refer to Section 10.3.1 for the battery life.
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