— 14-6 —
14.2.2.4. Control AC Line Under-Voltage
[Output]
DRDY: Open
[TA]
P3 > Control AC Line Under Voltage
[LED]
P3
[Motor Condition]
Servo-OFF
Table 14-6: Cause and Remedy: Control AC line under-voltage
Cause
Remedy
(1) Low voltage of control power input.
·
Check control power voltage.
(Low voltage due to over current or output shorting.)
(2) Control circuit voltage for the power
amplifier falls below 70V due to faulty
power supply.
·
Turn off power check the power supply and power
cable, then turn on power again.
(3) Faulty PCB.
(When the alarm is on after control
power is turned on.)
·
Replace Driver Unit.
(Refer to “Appendix 4. How to Replace ESA13 Driver
Unit”.)
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