ACS 550 Fault codes
ABB ACS 500 Drives Fault Detection and Reporting
ABB ACS 500 drives detect fault conditions and report them through various means: green and red LEDs on the drive, the status LED on the control panel, the control panel display if available, as well as through Fault Word and Alarm Word parameter bits (from 0305 to 0309). Different displays are used depending on the severity of the fault, and the drive can be directed to ignore faults, report them as alarms, or report them as faults.
Red LED – Faults: When a serious fault is detected, the drive activates the red LED, a steady red status LED is shown on the control panel, an appropriate Fault Word parameter is set, the control panel display is updated with the fault code, and the motor is stopped. The fault code can be cleared from the control panel by pressing specific buttons.
Flashing Green LED – Alarms: For less severe faults, the indicator is only advisory, and the drive reports that it has detected an unusual condition. For these situations, the green LED on the drive and on the control panel if present flashes, an appropriate Alarm Word parameter is set, and the control panel display is updated with the alarm code and/or name. Alarm messages disappear after a few seconds but periodically return as long as the alarm condition persists.
Fault Reset: The ACS550 can be configured to automatically reset certain faults. Faults with a flashing red LED can be reset by turning off the power for 5 minutes; faults with a steady red LED can be reset by fixing the issue and pressing the reset button or by turning off the power for 5 minutes.
History: The last three fault codes are recorded in specific parameters along with additional data to assist in troubleshooting. Specific steps using the control panel are followed to clear the fault history.
This summary provides basic information on the fault diagnosis and notification mechanisms of ABB ACS 500 drives, how fault and alarm conditions are displayed, and how faults can be reset.
Fault Code 1; Overcurrent: The output current is higher than expected. Check if the motor is overloaded, if the acceleration time is insufficient (controlled by parameters 2202 and 2205), and for faults in the motor, motor cables, or connections.
Fault Code 2; DC Overvoltage: The intermediate circuit DC voltage is too high. Check for static or transient overvoltages in the power supply, insufficient deceleration time (controlled by parameters 2203 and 2206), if the brake chopper is undersized (if present), and if the overvoltage controller is on (parameter 2005).
Fault Code 3; Drive Overheating: The drive heat sink is overheated. The temperature is above or at the limit. Check and correct for fan failure, obstructions in airflow, dirt or dust accumulation on the heat sink, excessive ambient temperature, or excessive motor load.
Fault Code 4; Short Circuit: Short circuit current. Check for short circuits in motor cables or the motor and disturbances in the power supply.
Fault Code 6; DC Undervoltage: The intermediate circuit DC voltage is insufficient. Check and correct for missing phases in the power supply, blown fuses, or low voltage in the mains.
Fault Code 7; AI1 Loss: Loss of analog input 1. The analog input value is below the AI 1 FAULT LIMIT (3021). Check the source and connection for the analog input, the AI1 FAULT LIMIT (3021), and the 3001 AI< MIN FUNCTION parameter settings.
Fault Code 8; AI2 Loss: Loss of analog input 2. The analog input value is below the AI 2 FAULT LIMIT (3022). Check the source and connection, the AI2 FAULT LIMIT (3022), and the 3001 AI< MIN FUNCTION parameter settings.
Fault Code 9; Motor Overheating: The motor is too hot. Check if the motor is overloaded, adjust the parameters used for estimation (3005…3009), check temperature sensors, and Group 35: MOTOR TEMP. MEAS. parameters.
Fault Code 10; Panel Loss: Panel communication is lost. The drive may be in local control mode (control panel shows LOC) or remote control mode (REM) and parameterized to accept start/stop, direction, or reference from the control panel. Check communication lines and connections, the 3002 PANEL COMM ERR parameter, and Group 10: START/STOP/DIR and Group 11: REFERENCE SELECT parameters.
Fault Code 11; ID Run Failed: Motor ID Run failed to complete successfully. Check motor connections and motor parameters (9905…9909).
Fault Code 12; Motor Jam: Motor or process jam. The motor is operating in the jam region. Check overload, insufficient motor power, and parameters 3010…301
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