ACS550-U1-022A-6 ABB

 

20 HP, Serial ACS550

 

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Error codes

 

 

 

 

Fault name : OVERCURRENT

Description and recommended corrective action : Output current is excessive. Check for and correct:

• Excessive motor load.

• Insufficient acceleration time (parameters 2202 ACCELER TIME 1 and 2205 ACCELER TIME 2).

• Faulty motor, motor cables or connections.

 

Fault name : DC OVERVOLT

Description and recommended corrective action : Intermediate circuit DC voltage is excessive. Check for and correct:

• Static or transient overvoltages in the input power supply.

• Insufficient deceleration time (parameters 2203 DECELER TIME 1 and 2206 DECELER TIME 2).

• Undersized brake chopper (if present).

• Verify that overvoltage controller is ON (using parameter 2005).

 

Fault name : SHORT CIRC

Description and recommended corrective action : Fault current. Check for and correct:

• A short-circuit in the motor cable(s) or motor.

• Supply disturbances.

 

Fault name : DC UNDERVOLT

Description and recommended corrective action : ntermediate circuit DC voltage is not sufficient. Check for and correct:

• Missing phase in the input power supply.

• Blown fuse.

• Undervoltage on mains.

 

Fault name : MOT OVERTEMP

Description and recommended corrective action : Motor is too hot, based on either the drive’s estimate or on temperature feedback.

• Check for overloaded motor.

• Adjust the parameters used for the estimate (3005…3009).

• Check the temperature sensors and Group 35: MOTOR TEMP MEAS

 

Fault name : MOTOR STALL

Description and recommended corrective action : Motor or process stall. Motor is operating in the stall region. Check for and correct:

• Excessive load.

• Insufficient motor power.

• Parameters 3010…3012.

 

Fault name : EARTH FAULT

Description and recommended corrective action : Possible ground fault detected in the motor or motor cables. The drive monitors for ground faults while the drive is running and while the drive is not running. Detection is more sensitive when the drive is not running and can produce false positives.

Possible corrections:

• Check for/correct faults in the input wiring.

• Verify that motor cable does not exceed maximum specified length.

• Decrease the detection level for earth fault with parameter 3028 EARTH FAULT LVL.

• A delta grounded input power supply and motor cables with high capacitance may result in erroneous error reports during non-running tests. To disable response to fault monitoring when the drive is not running, use parameter 3023 WIRING FAULT. To disable response to all ground fault monitoring, use parameter 3017 EARTH FAULT.

Note: Disabling earth fault (ground fault) may void the warranty.

 

Fault name : ENCODER ERR

Description and recommended corrective action : The drive is not detecting a valid encoder signal. Check for and correct:

• Encoder presence and proper connection (reverse wired = channel A connected to terminal of channel B or vice versa, loose connection or short circuit).

• Voltage logic levels are outside of the specified range.

• A working and properly connected Pulse Encoder Interface Module, OTAC-01.

• Wrong value entered in parameter 5001 PULSE NR. A wrong value will

only be detected if the error is such that the calculated slip is greater than 4 times the rated slip of the motor.

• Encoder is not being used, but parameter 5002 ENCODER ENABLE = 1 (ENABLE).