8. Maintenance and Inspection8-5Display symbol Name Causes and countermeasuresOC-9Overcurrentduring automatictuning1. 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-1Overvoltageduring stop1. The power supply voltage may have risen.Reduce the voltage to within the specified range.OV-2Overvoltageduring constantspeed operation1. The power supply voltage may have risen.Reduce the voltage to within the specified range.2. The speed may be fluctuating.OV-3OvervoltageduringaccelerationOV-4Overvoltageduringdeceleration1. The load GD2 may be too large.Set the deceleration time (A01-1) according to the load GD2.2. The power supply voltage may have risen.Reduce the voltage to within the specified range.OV-5Overvoltageduring braking1. The power supply voltage may have risen.Reduce the voltage to within the specified range.OV-6Overvoltageduring ACROV-7Overvoltageduringpre-excitationOV-9Overvoltageduring automatictuning
