ABB ACS255 User Manual (English)

Other manuals for ABB ACS255

Questions and Answers:

S
Scott WellsAug 21, 2025
Why does ABB Controller trip on overload after exceeding parameter 9906?
- G
  Glenn PerryAug 21, 2025
  The ABB Controller trips on overload after exceeding 100% of the value in parameter 9906 for a sustained period. To resolve this, check when the decimal points are flashing (indicating an overload) and either increase the acceleration rate or reduce the load. Verify that the motor cable length is within the specified limit. Ensure the motor nameplate parameters are correctly entered in parameters 9905, 9906, and 9907. If operating in Vector mode (Parameter 9903 – 0 or 1), also check the motor power factor in parameter 9915 and ensure an autotune has been successfully completed for the connected motor. Also, check the load mechanically to ensure it is free from jams, blockages, or other mechanical faults.
J
Jessica BallAug 23, 2025
How to fix heatsink over temperature on ABB Controller?
- J
  joseph45Aug 23, 2025
  To resolve a heatsink over temperature issue on your ABB Controller: * Check the drive's ambient temperature. * Ensure the drive's internal cooling fan is working. * Verify that the required space around the drive is maintained and the cooling airflow isn't restricted. * Reduce the effective switching frequency setting in parameter 2606. * Reduce the load on the motor/drive.
C
Clifford EspinozaAug 26, 2025
What causes over voltage on DC bus in ABB Controller?
- D
  davidvasquezAug 26, 2025
  Over voltage on the DC bus in an ABB Controller is generally caused by excessive regenerative energy being transferred from the load back to the drive. If the fault occurs on stopping or during deceleration, increase the deceleration ramp time 2203 or connect a suitable brake resistor to the drive. If operating in Vector Mode, reduce the speed loop gain in parameter 2301.
M
Mr. Anthony CowanAug 27, 2025
How to troubleshoot hardware over current on ABB ACS255 Controller?
- K
  Kimberly HarrisAug 28, 2025
  To troubleshoot a hardware over current issue on your ABB Controller, check the wiring to the motor and the motor itself for phase-to-phase and phase-to-earth short circuits. Disconnect the motor and motor cable and retest. If the drive trips with no motor connected, it must be replaced, and the system fully checked and retested before installing a replacement unit.
M
mary42Aug 29, 2025
What to do if there is under voltage on DC bus in ABB Controller?
- J
  John ColemanAug 29, 2025
  If under voltage occurs on the DC bus of your ABB Controller during running, check the incoming supply voltage and all connections into the drive, including fuses and contactors.
J
Jose MitchellSep 1, 2025
Why did autotune fail on my ABB ACS255?
- A
  Angela NunezSep 1, 2025
  Autotune may fail on your ABB Controller if the measured motor stator resistance varies between phases. Ensure the motor is correctly connected and free from faults. Check the windings for correct resistance and balance.
J
Jorge CortezSep 3, 2025
How to resolve brake channel over current in ABB ACS255 Controller?
- C
  Chelsea LutzSep 3, 2025
  To resolve a brake channel over current issue in your ABB Controller, ensure the connected brake resistor is above the minimum permissible level for the drive – refer to the ratings shown in section 11.2. Check the brake resistor and wiring for possible short circuits.
M
mkimSep 5, 2025
What to do when ABB ACS255 Controller exceeds maximum torque limit?
- L
  Levi StephensonSep 5, 2025
  If your ABB Controller exceeds the maximum torque limit, reduce the motor load, or increase the acceleration time.
G
Gina ContrerasSep 7, 2025
How to fix Modbus comms fault on ABB ACS255?
- K
  Kathleen MillerSep 7, 2025
  To address a Modbus comms fault on your ABB Controller, check that the network master/PLC is still operating and inspect the connection cables. Increase the value of parameter 3019 to a suitable level.
W
William HammondSep 9, 2025
What to do if the cooling fan fails on ABB Controller?
- P
  Phillip NelsonSep 9, 2025
  If the cooling fan fails on your ABB Controller, check it and replace it if necessary.

ABB ACS255 Specifications

General

Product Type	AC Drive
Type	ACS255
Communication Options	Modbus RTU
Protection Class	IP20
IP Rating	IP20
Overload Capacity	150% for 60 seconds
Braking	Integrated braking chopper
Altitude	Up to 1000 m without derating
Input Voltage	200 to 480 V
Supply Voltage	200 to 480 V
Frequency range	48 to 63 Hz
Control Method	Scalar control
Communication	Modbus RTU
Operating temperature	-10°C to +50°C
Storage temperature	-40 to +70 °C
Humidity	5 to 95% non-condensing