Mitsubishi C70 User Manual

III - 21
5. Hardware Replacement Methods
5.2 Battery for CNC CPU
5.2 Battery for CNC CPU
5.2.1 Battery Life for CNC CPU
*1 The actual service value indicates the average value, and the guaranteed value indicates the minimum
value.
*2 The power-on time ratio indicates the ratio of Multiple CPU system power-on time to one day (24 hours).
(When the total power-on time is 17 hours and the total power-off time is 7 hours, the power-on time
ratio is 70%.)
*3 The guaranteed value (MIN) ; 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°C to 75°C (-13 to 167°F) (operating ambient temperature of 0°C to
55°C (32 to 131°F)).
*4 The guaranteed value (TYP) ; equivalent to the total power failure time that is calculated based on the
normal air-conditioned environment (40°C (104°F)).
*5 Set the battery (Q6BAT) to battery holder unit (Q170DBATC).
(Note 1) Do not use the battery exceeding its guaranteed life.
(Note 2) The self-discharge influences the life of battery without the connection to Q6BAT. The external
battery should be exchanged approximately every 4 or 5 years. And, exchange the battery with
a new one in 4 to 5 years even if a total power failure time is guaranteed value or less.
(Note 3) In the following status, the backup time after power OFF is 3 minutes.
- The battery connector/Q6BAT lead connector is disconnected.
- The battery cable/lead wire of Q6BAT is broken.
Module type Battery type
Battery life (Total power failure time) [h]*1
Power-on time
ratio*2
Guaranteed
value*3
(MIN)
(75 ℃ )
Guaranteed
value*4
(TYP)
(40 ℃ )
Q173NCCPU
External battery
(Q6BAT)*6
0% 20000
43800
30% 27000
50% 31000
70% 36000
100% 43800

Mitsubishi C70 Specifications

General

Brand	Mitsubishi
Model	C70
Category	Control Unit
Language	English