Mitsubishi Q170MCPU User Manual page 78

2 SYSTEM CONFIGURATION
Battery type
Power-on time ratio
Q6BAT
Q7BAT
(Large capacity)
(Note-1) : The actual service value indicates the average value, and the guaranteed value indicates the minimum value.
(Note-2) : The power-on time ratio indicates the ratio of Motion controller 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%.)
(Note-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)).
(Note-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)).
(Note-5) : The actual service value (Reference value) ; equivalent to the total power failure time that is calculated based on the measured
value and under the storage ambient temperature of 25°C (77°F). This value is intended for reference only, as it varies with
characteristics of the memory.
(2) Data back-up of Motion controller by the battery
Be sure to set the battery to the Motion controller.
Set the battery (Q6BAT/Q7BAT) to battery holder.
The data (Refer to Section 6.5.) of RAM built-in Motion controller are backed up
without using the battery.
In the following status, the backup time after power OFF is 3 minutes.
• The Q6BAT/Q7BAT lead connector is disconnected.
• The lead wire of Q6BAT/Q7BAT is broken.
Guaranteed value
(Note-3)
(Note-2)
(MIN) (75°C (167°F))
0% 13000
30% 18000
50% 21000
70% 24000
100% 43800
0% 39000
30%
50%
43800
70%
100%
POINTS
The self-discharge influences the life of battery without the connection to Motion
controller. The 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.
Battery life (Total power failure time) [h]
Guaranteed value
(Note-4)
(TYP) (40°C (104°F))
40000
43800
43800
2 - 51
(Note-1)
Actual service value
(Note-5)
Backup time after
(Reference value)
(TYP) (25°C (77°F))
43800
SM51/SM52 ON)
43800
alarm
90
(After