Battery Box For Cnc Cpu (Q173Nccpu) - Mitsubishi Electric C70 Connection Manual

2.6 Battery Box for CNC CPU (Q173NCCPU)

Dimension
Life time of the battery
CNC CPU module type
Q173NCCPU
*1: The power-on time ratio indicates the ratio of C70 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 value; 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 -25 to 75 (operating ambient temperature of 0 to 55).
*3: The actual service value; 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.
*5: The battery should be changed after 5 years of use even an alarm has not occurred.
2- 5.3 M5x14
40
80
Power-on
Guaranteed
*1
*2
time ratio
value
(75C°)
0% 20,000hr
30% 27,000hr
50% 31,000hr
70% 36,000hr
100% 43,800hr
C70 Connection Manual
2.6 Battery Box for CNC CPU (Q173NCCPU)
Life time of the battery
Actual
Backup time
*3
service value
after alarm
(40C°)
90hr (after SM51
43,800hr
or SM52 ON)
*4
41