8. Maintenance and Inspection
8-5
Display symbol Name Causes and countermeasures
OC-9
Overcurrent
during automatic
tuning
1. Increase the acceleration time setting (A01-0).
2. Increase the deceleration time setting (A01-1).
3. A short circuit in the load may have occurred.
OV-1
Overvoltage
during stop
1. The power supply voltage may have risen.
Reduce the voltage to within the specified range.
OV-2
Overvoltage
during constant
speed operation
1. The power supply voltage may have risen.
Reduce the voltage to within the specified range.
2. The speed may be fluctuating.
OV-3
Overvoltage
during
acceleration
OV-4
Overvoltage
during
deceleration
1. The load GD
2
may be too large.
Set the deceleration time (A01-1) according to the load GD
2
.
2. The power supply voltage may have risen.
Reduce the voltage to within the specified range.
OV-5
Overvoltage
during braking
1. The power supply voltage may have risen.
Reduce the voltage to within the specified range.
OV-6
Overvoltage
during ACR
OV-7
Overvoltage
during
pre-excitation
OV-9
Overvoltage
during automatic
tuning
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