Yaskawa MEMOCON GL120 - Manual (Page 347)

4.8 Other Module
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Note Although the above step is possible with a precision flat-blade screwdriver (tip size: 0.4 x
2.5 mm), we recommend the following special screwdriver to ensure sufficient tightening
torque: SZN/K (made by Phoenix Contact Co.)
6. Battery Voltage Check Switch
1) The battery voltage check switch can be used to check the voltage of the battery, and to
output the result using indicators and output signals. To perform an battery voltage
check, press the battery voltage check switch using a precision screwdriver with a fine tip.
2) A battery voltage check is performed at the following times.
• When the external power supply is turned ON.
• When the battery voltage check switch is pressed.
• When the battery voltage check reference input (CHK) turns ON.
The battery voltage check switch and the battery voltage check reference input (CHK)
perform the same function.
3) The status of indicators and output signals during battery voltage check is as follows.
a) During battery voltage check, the ALARM1 and ALARM2 indicators and the ALM1
and ALM2 outputs will maintain the status of the previous check and do not reflect the
result of the present check. Only use the ALARM1 and ALARM2 indicators and the
ALM1 and ALM2 outputs after turning OFF the battery voltage check switch and the
battery voltage check reference input (CHK).
The timing of the battery voltage check is shown in the following diagram.
Check switch or
check reference
input (CHK)
During check
POWER indicator
PON output
ALARM1, 2 indicators
ALM1, 2 outputs
Indeterminate
Determinate
OFF
OFF
ON
ON
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