GE VAT2000 Instruction Manual

Also see for VAT2000 Series: Instruction manual Instruction manual

Contents

8. Maintenance and Inspection8-6Display symbol Name Causes and countermeasuresUV-1~UV-9Undervoltage 1. A drop in voltage, phase dropout or power supply failure mayhave occurred.Check the power supply system and correct if necessary.UOH.Overheat 1. A trouble may have occurred in the cooling fan.Replace if necessary.2. The ambient temperature may have risen.Lower the ambient temperature. (50°C or less)3. The fan or heatsink may be clogged. Clean it4. The carrier frequency may be set too high. Check AppendixTable 1 (note5)ATT-nAutomatic tuningabnormalcompletionn: Step No.1. n = 1 The motor may not be connected correctly.Check the connection.The B00 and B01 parameters may not be setcorrectly.Check the parameter settings.2. n = 2 The B00 and B01 parameters may not be setcorrectly.Check the parameter settings.3. n = 3 The load and machine may not be separated.Separate the load and machine.Increase the acceleration time (A01-0).Increase the deceleration time (A01-1).If the motor vibrates, increase the torque stabilisinggain (B18-2).4. n = 4 The load and machine may not be separated.Separate the load and machine.If the motor vibrates, increase the torque stabilisinggain (B18-2).5. n = 5 If the motor does not stop, Increase theacceleration/deceleration time (A01-0, A01-1).If the motor is stopped, the B00 and B01 parametersmay not be set correctly.Check the parameter settings.6. n = 6 The B00 and B01 parameters may not be setcorrectly. Check the parameter settings..OL-1Overload 1. The motor may be overloaded.Reduce the load or increase the motor and inverter capacity.2. If this occurs at a low speed, try lowering the boost (A02-2) orbrake voltage (A03-0).GRD.1~GRD.9Grounding 1. A ground fault may have occurred in the output line or motor.Restore the grounded point.