Fault Menu

Accessibility: This menu is only accessible when the access locking switch is in the correct position. Modifications can only be made when the motor is stopped.

Atr    Auto Restart
Allows an automatic restart of the drive controller if the cause of the fault has disappeared and a run command is maintained.

Conditions for Automatic Restart: An automatic restart is possible after the following faults:

• OSF: Input line overvoltage
• ObF: Overbraking
• OtF: Motor overheating (when the thermal sensor resistance is less than 1500 ohms)
• LFF: Loss of 4–20 mA
• OLF: Motor overload (after the thermal state has decreased below 100%)
• OPF: Motor phase loss
• OHF: Drive overheating (when the thermal state has decreased below 70%)
• SLF: Loss of RS-485 port communication
• EPF: External fault
• CnF: Network communication fault

Behavior During Auto Restart:

• When the Auto Restart is active, the fault relay remains energized.
• If the fault has disappeared, the drive controller will attempt to restart the motor after a delay time set by parameter tAr.
• If the drive controller remains faulted after attempting the number of restarts set in the parameter nAr, the fault relay de-energizes, and the drive controller must be reset by cycling power.

Note: This parameter is only available on 125–500 hp drive controllers.

WARNING: AUTOMATIC RESTART

Automatic restart can only be used for machines or installations that present no danger in the event of automatic restarting, either for personnel or equipment.
Equipment operation must conform to national and local safety regulations. Failure to follow this instruction can result in death, serious injury, or equipment damage.

nAr    Nb max reset
Sets the number of restart attempts.

tAr    Reset pause
Sets the delay time between Auto restart attempts.

rSt    Reset Type
Specifies the type of reset:

• RSP (partial reset): Resets faults like OSF, ObF, OtF, LFF, OLF, RnF, SOF, OPF, OHF, SLF, EPF, CnF.
• RSG (total reset): Overrides all other faults except motor short circuit.

Note: The Reset Type parameter is accessible if the Reset Fault function is assigned to a logic input.
Note: This parameter is only available on 125–500 hp drive controllers.

CAUTION: MOTOR OVERHEATING

Repeated reset of the thermal state after a thermal overload can result in thermal stress to the motor.
When faults occur, promptly inspect the motor and driven equipment for problems such as a locked shaft and mechanical overload before restarting. Also, check the power supplied to the motor for abnormal conditions such as phase loss and phase imbalance.
Failure to follow these instructions can result in equipment damage.