Hi everyone

ABB ACS 140 Alarm and Fault Displays (Page 1)

The ACS100-PAN's seven-segment display unit uses "ALxx" or "FLxx" codes to show alarms and faults, where xx represents the relevant alarm or fault code. The alphanumeric display of the ACS-PAN control panel shows alarm and fault codes along with a brief message.

Alarms between 1-7 originate from button operations. For codes 10 or higher, the green LED flashes. Faults are indicated by a red LED.

Alarm and fault messages disappear when the MENU, ENTER, or arrow buttons on the control panel are pressed. If the keyboard is not touched and the alarm or fault is still active, the message reappears after a few seconds.

The last three fault codes are recorded in parameters 0128 - 0130. These fault memories can be cleared from the control panel by pressing the UP and DOWN buttons simultaneously while in parameter set mode.

Fault Reset

Faults indicated by a flashing red LED are reset by turning off the power for a while. Other faults (indicated by a steady red LED) can be reset either from the control panel, through a digital input or serial communication, or by turning off the supply voltage for a while. Once the fault is cleared, the motor can be started.

The ACS 400 can be configured to automatically reset certain faults. For automatic reset, refer to parameter group 31.

Fault Codes and Descriptions

Fault Code 1: Overcurrent

    The output current is too high.
    The motor load may be too high.
    The acceleration time may be too short (parameters 2201 ACCELERATION TIME 1 and 2203 ACCELERATION TIME 2).
    The motor or motor cable may be faulty or incorrectly connected.

Fault Code 2: DC Overvoltage

    The intermediate circuit DC voltage is too high.
    Check the main network for static or transient overvoltages.
    The deceleration time may be too short (parameters 2202 DECELERATION TIME 1 and 2204 DECELERATION TIME 2).
    The brake chopper (if present) may be undersized.

Fault Code 3: ACS 400 Overtemperature

    The ACS 400 heat sink temperature is too high. The temperature cut-off limit is 95 °C.
    Check the airflow and fan operation.
    Compare the motor power with the unit power.

Fault Code 4: Short Circuit

    Fault current. Possible causes for this fault:
        There may be a short circuit in the motor cables or motor.
        There may be power supply interruptions.

Fault Code 5: Output Overload

    Inverter overload condition. The output current of the ACS 400 exceeds the values given on page 25 of this guide.

Fault Code 6: DC Undervoltage

    The intermediate circuit DC voltage is insufficient.
    There may be a missing phase in the main network.
    A fuse may have blown.

Fault Code 7: Analog Input 1

    Loss of analog input 1. The analog input value is below the MINIMUM AI 1 (3022) value.

Fault Code 8: Analog Input 2

    Loss of analog input 2. The analog input value is below the MINIMUM AI 2 (3023) value.

Fault Code 9: Motor Overtemperature

    Motor overtemperature condition estimated by ACS 400. See parameters 3004 – 3008.

Fault Code 10: Panel Loss

    Loss of panel communication. The drive is receiving start, stop, and direction commands while connected to the panel.

Fault Code 11: Parameterization

    Inconsistent parameter values:
        MINIMUM AI 1 > MAXIMUM AI 1 (parameters 1301, 1302)
        MINIMUM AI 2 > MAXIMUM AI 2 (parameters 1304, 1305)
        MINIMUM FREQUENCY > MAXIMUM FREQUENCY (parameters 2007, 2008)
        The PFC block is trying to use the IO expansion module (NDIO) while the DDCS connection is not properly configured.

These fault codes and descriptions provide crucial information for diagnosing and troubleshooting issues with the ABB ACS 140 drive. If you encounter a problem that you cannot resolve, it's important to contact ABB technical support for further assistance.

- ACS 400 User manuals  
- ACS 400 Fault Codes 1  
- ACS 400 Fault Codes 2  

++ Abb Homepage  
+ VFD Main Menu 

"* The user manuals, commissioning suggestions, error codes, and solution recommendations provided on this page are not binding. The information and documents above are open to and even in need of improvement. As the Otomasyon Mall Community, we gladly welcome your suggestions and contributions. If you have field experience and insights on ease of use, please do not hesitate to share them with us."  02.08.2014