Mitsubishi MELSEC User Manual

11 - 6
11.3 Battery Life and Replacement Procedure
11.3.1 Battery lives of CPU modules
11
MAINTENANCE AND INSPECTION
11.3.1 Battery lives of CPU modules
* 1: The power-on time ratio indicates the ratio of PLC power-on time to one day (24 hours).
(When the total power-on time is 12 hours and the total power-off time is 12 hours, the power-on
time ratio is 50%.)
* 2: The guaranteed battery service life; equivalent to the total power failure time that is calculated
based on the characteristics value of the memory (SRAM) supplied by the manufacturer and
under the storage ambient temperature range of -40 to 75 (operating ambient temperature of 0
to 55 ).
* 3: The actual battery service life; equivalent to the total power failure time that is calculated based on
the measured value and under the storage ambient temperature of 40 . This value is intended
for reference only, as it varies with characteristics of the memory.
* 4: In the following status, the backup time after power OFF is 3 minutes.
•The battery connector is disconnected.
•The lead wire of the battery is broken.
Table11.3 Battery lives
CPU Module
Type
Power-on Time
Ratio
*1
Battery lives
Guaranteed
value (70 )
*2
Actual service
value (Reference
value)
*3
(40 )
After SM52 ON
(Backup time after
alarm
*4
)
QS001CPU
0%
26,000hr
2.96 years
43,800hr
5.00 years
710hr
30 days
30%
37,142hr
4.23 years
43,800hr
5.00 years
710hr
30 days
50%
43,800hr
5.00 years
43,800hr
5.00 years
710hr
30 days
70%
43,800hr
5.00 years
43,800hr
5.00 years
710hr
30 days
100%
43,800hr
5.00 years
43,800hr
5.00 years
710hr
30 days

Mitsubishi MELSEC Specifications

General

Category	Programmable Logic Controller (PLC)
Manufacturer	Mitsubishi Electric
Series	MELSEC
Programming Languages	Ladder Diagram (LD), Function Block Diagram (FBD), Structured Text (ST), Instruction List (IL), Sequential Function Chart (SFC)
Communication Protocols	Ethernet, CC-Link, RS-232, RS-485, USB, Profibus, Modbus
Model Series	FX, Q, L, iQ-R, iQ-F
Input Voltage	100-240V AC, 24V DC (varies by model)
Memory Capacity	Varies widely depending on the CPU module and series. Ranges from kilobytes to megabytes.
I/O Points	16 to 8192 points (varies by model)
Communication Ports	Ethernet, RS-232, RS-485, USB (varies by model)
Programming Software	GX Works2, GX Works3, GX Developer
Operating Temperature	0°C to 55°C
Storage Temperature	-25°C to 75°C
Humidity	5% to 95% (non-condensing)
Vibration Resistance	10 to 57Hz, 0.075mm amplitude; 57 to 150Hz, 9.8m/s² acceleration
Shock Resistance	147m/s², 3 times in each direction (X, Y, Z)
Protection Class	IP20 (varies by model)
CPU Processing Speed	0.02μs to 0.1μs per instruction (varies by model)