Abb ACS150 VFD fault code and solution

Alarm and fault indications
An alarm or fault message on the panel display indicates abnormal drive status.
Using the information given in this chapter most alarm and fault causes can be dentified and corrected. If not, contact an ABB representative.
How to reset
The drive can be reset either by pressing the keypad key on the control panel, through digital input, or by switching the supply voltage off for a while. When the fault
has been removed, the motor can be restarted.
Fault history
When a fault is detected, it is stored in the fault history. The latest faults are stored together with a time stamp.
Parameters 0401 LAST FAULT, 0412 PREVIOUS FAULT 1 and 0413 PREVIOUS FAULT 2 store the most recent faults. Parameters 0404...0409 show drive operation
data at the time the latest fault occurred.

A2001 OVERCURRENT
(programmable fault function 1610)
Output current limit controller is active.
Check motor load.
Check acceleration time (2202 and 2205).
Check motor and motor cable (including phasing).
Check ambient conditions. Load capacity decreases if installation site ambient temperature exceeds 40°C.
See section Derating on page 114.
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A2002 OVERVOLTAGE
(programmable fault function 1610)
DC overvoltage controller is active.
Check deceleration time (2203 and 2206).
Check input power line for static or transient overvoltage.
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A2003 UNDERVOLTAGE
(programmable fault function 1610)
DC undervoltage controller is active.
Check input power supply.
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A2004 DIRLOCK

Change of direction is not allowed.
Check parameter 1003 DIRECTION settings.
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A2006 AI1 LOSS
(programmable fault function 3001, 3021)
Analog input AI1 signal has fallen below limit defined by parameter
3021 AI1 FAULT LIMIT.
Check fault function parameter settings.
Check for proper analog control signal levels.
Check connections.
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A2009 DEVICE OVERTEMP
Drive IGBT temperature is excessive. Alarm limit is 120°C.
Check ambient conditions. See also section Derating on page 114.
Check air flow and fan operation.
Check motor power against unit power.
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A2010 MOTOR TEMP

(programmable fault function 3005...3009)
Motor temperature is too high (or appears to be too high) due to excessive load, insufficient motor power, inadequate cooling or incorrect start-up data.
Check motor ratings, load and cooling.
Check start-up data.
Check fault function parameter settings.
Let motor cool down. Ensure proper motor cooling:
Check cooling fan, clean cooling surfaces, etc.
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A2011 UNDERLOAD
(programmable fault function 3013...3015)
Motor load is too low due to e.g.  release mechanism in driven equipment.
Check for problem in driven equipment.
Check fault function parameter settings.
Check motor power against unit power.
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A2012 MOTOR STALL
(programmable fault function 3010...3012)
Motor is operating in stall region due to e.g. excessive load or insufficient motor power.
Check motor load and drive ratings.
Check fault function parameter settings.
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A2013 AUTORESET Automatic reset alarm
Check parameter group 31 AUTOMATIC RESET settings.
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A2017 OFF BUTTON
Drive stop command has been given from control panel when local control lock is active.
Disable local control mode lock by parameter 1606 LOCAL LOCK and retry.
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A2023 EMERGENCY STOP
Drive has received emergency stop command and ramps to stop according to ramp time defined by parameter 2208 EMER DEC TIME.
Check that it is safe to continue operation.
Return emergency stop push button to normal position.
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A2026 INPUT PHASE LOSS
(programmable fault function 3016)
Intermediate circuit DC voltage is oscillating due to missing input power line phase or blown fuse.
Alarm is generated when DC voltage ripple exceeds 14% of nominal DC voltage.
Check input power line fuses.
Check for input power supply imbalance.
Check fault function parameter setting.
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A5011 Drive is controlled from another source.
Change drive control to local control mode.
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A5012 Direction of rotation is locked.
Enable change of direction. See parameter 1003 DIRECTION.
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A5013 Panel control is disabled because start inhibit is active.
Deactivate start inhibit and retry. See parameter 2108 START INHIBIT.
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A5014 Panel control is disabled because of drive fault.
Reset drive fault and retry.
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A5015 Panel control is disabled because local control mode lock is active.
Deactivate local control mode lock and retry. See parameter 1606 LOCAL LOCK.
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A5019 Writing non-zero parameter value is prohibited.
Only parameter reset is allowed.
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A5022 Parameter is write protected.
Parameter value is read-only and cannot be changed.
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A5023 Parameter change is not allowed, when drive is running.
Stop drive and change parameter value.
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A5024 Drive is executing task.
Wait until task is completed.
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A5026 Value is at or below minimum limit.
Contact our Abb product representative (contact information available on the Abb homepage). .
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A5027 Value is at or above maximum limit.
Contact our Abb product representative (contact information available on the Abb homepage). .
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A5028 Invalid value
Contact our Abb product representative (contact information available on the Abb homepage). .
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A5029 Memory is not ready.
Retry.
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A5030 Invalid request
Contact our Abb product representative (contact information available on the Abb homepage). .
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A5031 Drive is not ready for operation, e.g due to low DC voltage.
Check input power supply.
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A5032 Parameter error
Contact our Abb product representative (contact information available on the Abb homepage). .
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Capacitors
Reforming
The capacitors must be reformed if the drive has been stored for two years. See the table on page 20 for how to find out the manufacturing time from the serial number.
For information on reforming the capacitors, refer to Guide for Capacitor Reforming in ACS50, ACS55, ACS150, ACS350, ACS550 and ACH550

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