GE VAT2000 User Manual

8. Maintenance and Inspection
8-6
Display symbol Name Causes and countermeasures
UV-1~UV-9
Undervoltage 1. A drop in voltage, phase dropout or power supply failure may
have 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 it
4. The carrier frequency may be set too high. Check Appendix
Table 1 (note5)
ATT-n
Automatic tuning
abnormal
completion
n: Step No.
1. n = 1 The motor may not be connected correctly.
Check the connection.
The B00 and B01 parameters may not be set
correctly.
Check the parameter settings.
2. n = 2 The B00 and B01 parameters may not be set
correctly.
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 stabilising
gain (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 stabilising
gain (B18-2).
5. n = 5 If the motor does not stop, Increase the
acceleration/deceleration time (A01-0, A01-1).
If the motor is stopped, the B00 and B01 parameters
may not be set correctly.
Check the parameter settings.
6. n = 6 The B00 and B01 parameters may not be set
correctly. Check the parameter settings..
OL-1
Overload 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) or
brake voltage (A03-0).
GRD.1~GRD.9
Grounding 1. A ground fault may have occurred in the output line or motor.
Restore the grounded point.

GE VAT2000 Specifications

General

Brand	GE
Model	VAT2000
Category	Controller
Language	English