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WX9 ASD Installation and Operation Manual
OC2P
Over-Heat
During Dec
• Cooling fan is inoperative.
• Ventilation openings are obstructed.
• Internal thermistor is disconnected.
• Deceleration time is too short.
• DC Injection current is too high.
• ASD or the motor is improperly matched to the application.
OC3
Over-Current
During Run
• Load fluctuations.
• ASD is operating at an elevated temperature.
• ASD current exceeds 340% of the rated FLA on ASDs that are 100 HP or less during a
fixed-speed run or if during a fixed-speed run the ASD over-heats. On ASDs that are
greater than 100 HP, it occurs when the ASD current exceeds 320% of the rated FLA on a
fixed-speed run.
OC3P
Over-Heat
During Run
• Cooling fan is inoperative.
• Ventilation openings are obstructed.
• Internal thermistor is disconnected.
• Improper V/f setting.
• ASD or the motor is improperly matched to the application.
OCL or OCA1
U Phase OC
• Low impedance at the U lead of the ASD output.
OCL or OCA2
V Phase OC
• Low impedance at the V lead of the ASD output.
OCL or OCA3
W Phase OC
• Low impedance at the W lead of the ASD output.
OH
Over-Heat
• Cooling fan is inoperative.
• Ventilation openings are obstructed.
• Internal thermistor is disconnected.
OL1
ASD Overload
• Acceleration time is too short.
• DC Injection current is too high.
• Improper V/f setting.
• Motor is running during restart.
• ASD or the motor is improperly matched to the application.
Note:
The event that caused the Trip(s) must be corrected or the monitored value 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.
Table 14. WX9 ASD Trips and Faults. (Continued)
LED Display
LCD Display
Possible Causes/Troubleshooting
Содержание WX9 ASD
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