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152 W7 ASD Installation and Operation Manual
Speed Error • Result of a motor speed that is greater than the commanded speed when using an
encoder for speed control.
• Improper encoder connection or setup information.
• Defective encoder.
Overtorque • A torque requirement by the load in excess of the setting of parameter 0616 or
0617 for a time longer than the setting of parameter 0618.
• The ASD is improperly matched to the application.
• The load is obstructed.
Overvolt Accel • Motor running during restart.
Overvolt Decel • Deceleration time is too short.
• DBR value is too high.
• DBR required (DBR setup required).
• Stall protection is disabled.
• 3-phase input voltage is out of specification.
• Input reactance required.
Overvolt Run • Load fluctuations.
• 3-Phase input voltage out of specification.
Positional Err • Operating in the Position Control mode and the resulting position exceeds the
limits of the Position Control setting.
RAM Err • Internal RAM malfunction.
ROM Err • Internal ROM malfunction.
Sink/Source Error • Improperly positioned Sink/Source jumper on the control board or on an option
device.
• Sink/Source configuration of an option device is incorrect.
Type(form) Error • Firmware information (typeform) loaded into the Gate Driver board is
inconsistent with the device in which the firmware is being used.
•The Gate Driver board has been replaced.
•The Gate Driver board is defective.
U Phase OC • Low impedance at the U lead of the ASD output.
V Phase OC • Low impedance at the V lead of the ASD output.
W Phase OC • Low impedance at the W lead of the ASD output.
Note: The event that caused the Trip(s) must be corrected or must decrease to less than the threshold
value required to cause the trip to allow for a Reset to be recognized. In the event of multiple
active trips, the trip displayed will remain until all faults are corrected and all trips are cleared.
Fault Screen Display Possible Causes