254
Q9 Plus ASD Installation and Operation Manual
OC1, OC1P
Over-Current
Acc
Over-Current During
Acceleration.
• V/f setting needs to be adjusted.
• Restart from a momentary power outage.
• The ASD is starting into a rotating motor.
• ASD/Motor is improperly matched to the
application.
• Phase-to-phase short (U/T1, V/T2, or W/T3).
• Acceleration time is too short.
• Voltage Boost setting is too high.
• Motor/machine is jammed.
• Mechanical brake is engaged while the ASD is
running.
• ASD current exceeds 320% or 340% of the rated
FLA on ASDs that are greater than 100 HP or
that are 100 HP or less, respectively, during
acceleration.
OC2, OC2P
Over-Current
Dec
Over-Current During
Deceleration.
• Phase-to phase short (U/T1, V/T2, or W/T3).
• Deceleration time is too short.
• Motor/machine is jammed.
• Mechanical brake is engaged while the ASD is
running.
• ASD current exceeds 320% or 340% of the rated
FLA on ASDs that are greater than 100 HP or
that are 100 HP or less, respectively, during
acceleration.
OC3, OC3P
Over-Current
Run
Over-Current During Fixed
Speed Operation.
• ASD/Motor is improperly matched to the
application.
• Load fluctuations.
• ASD is operating at an elevated temperature.
• ASD current exceeds 320% or 340% of the rated
FLA on ASDs that are greater than 100 HP or
that are 100 HP or less, respectively, during
acceleration.
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 cleared.
Table 19. Fault Codes (Continued)
LED
Screen
LCD
Screen
Fault Description
Possible Cause
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