Q9 Plus ASD Installation and Operation Manual
255
E-13
Over-Speed
Speed Error (Over-Speed).
• 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.
OT
Over-Torque
Over-Torque.
• Output torque requirement in excess of the
F616
or
F617
settings for a time longer than the
F618
setting.
OP1
Over-Voltage
Acc
Over-Voltage During
Acceleration.
• Motor is running during restart.
OP2
Over-Voltage
Dec
Over-Voltage During
Deceleration.
• Deceleration time is too short.
• Stall prevention is disabled.
• 3-phase input voltage is out of specification.
• Input reactance is required.
OP3
Over-Voltage
Run
Over-Voltage During Fixed
Speed Operation.
• Load fluctuations.
• 3-phase input voltage out of specification.
E-21
Stack Err
Stack Overflow Error.
• Service call is required.
SOUT
Step-Out (PM)
Step-Out (For PM Motors
Only).
• Service call is required.
OCA1
U-Phase OC
U-Phase Over-Current.
• Low impedance at the U/T1 phase.
OCA2
V-Phase OC
V-Phase Over-Current.
• Low impedance at the V/T2 phase.
OCA3
W-Phase OC
W-Phase Over-Current.
• Low impedance at the W/T3 phase.
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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