Troubleshooting - WEG CFW-10 EASYDRIVE User Manual

DIAGNOSTICS AND TROUBLESHOOTING
CHAPTER 7 -
7.2

TROUBLESHOOTING

PROBLEM
Motor does not run Incorrect wiring
Analog reference
(if used)
Incorrect Programming 1.Check if the parameters are properly programmed for the
Fault
Motor Stall
Motor speed Loose connections
oscillates
Defective speed
potentiometer
Variation of the external 1.Identify the cause of the variation.
analog reference
Motor speed Programming error
too high or (reference limits)
too low
Signal of the
Reference Control
Motor nameplate
Display OFF Power supply
80
POINT TO BE
CHECKED
1.Check the power and the control connections. For example,
or No External Fault must be connected to GND (pin 5 of the
1.Check if the external signal is properly connected.
2.Check the status of the speed potentiometer (if used).
application.
1.Check if the inverter has not been disabled due to detected fault
condition (refer to Table above).
1.Reduce the motor load.
2.Increase P169 or P136/P137.
1.Disable the inverter, switch OFF the power supply and tighten all
connections.
1.Replace the defective speed potentiometer.
1.Check if the contents of P133 (minimum frequency)
and P134 (maximum frequency) are according to the motor
and the application.
1.Check the control signal level of the reference.
2.Check the programming (gains and offset) at P234 to P236.
1.Check if the used motor meets the application requirements.
data
1.The power supply must be within the following ranges:
200-240V models: - Min: 170V
110-127V models: - Min: 93V
CORRECTIVE ACTION
the digital inputs DIx programmed for Start/Stop or General Enable
control connector XC1).
- Max: 264V
- Max: 140V