ABB ACS800 Common Fault Codes – Part 4

ABB’s ACS800 Variable Frequency Drive is powerful AC drive that can handle applications from 0.75 to 7500 horsepower with ease. Advanced harmonics mitigation technology provide a cost efficient solution to meet your most stringent power quality standards.

The ACS800’s highly flexible, highly programmable platform makes integrating the drive into just about every drive-motor application you can think of. The drive’s “Everything Inside” design makes it fantastic “plug-and-play” tool but the drive really shines when it is tailor made for your most precise applications. The drive is suitable for use in process industries such as pulp and paper, metals, mining, cement, power, chemical, and oil and gas. The ACS800 can even be found powering offshore supply vessels in the Gulf of Mexico!

Because the ACS800 is such a valuable tool, it can be a headache when something goes wrong. With dozens of fault codes to parse and diagnose, it may be difficult to identify where your drive is encountering issues. To help you diagnose issues you’re having with the ACS800, we’ve composed this guide to give you a head start when troubleshooting your drive.

This is Part 4 in a five-part series. (Part 1, Part 2, Part 3)




Analog Input < Minimum Function #8110

If the ACS800 detects this fault, its display will show “AI < MIN FUNC (8110)” on the control panel, 3rd line down.

This fault indicates that the analog control signal is below the minimum allowed value, likely due to an incorrect signal level or failure in the control wiring.


  • Check for proper analog control signal levels
  • Check control wiring
  • Check fault function AI MIN FUNC at parameter 30.01

This is a straightforward type of condition – either the signal is there or it’s not. If the signal is present and drive still faults with this message, the analog input itself may be defective. If no signal is present at the drive’s AI terminals, then it must be traced back to the source.


Short Circuit #2340

In the event of a short circuit fault, the drive will display “SHORT CIRCUIT (2340)” on the control panel, 3rd line down.

This fault means the drive detects a short in the motor, along the motor cables and connections, or at the output inverter bridge.


  • Check motor and motor cables for shorts
  • Check to make sure there are no power factor correction capacitors or absorbers in motor cables
  • If the inverter bridge is at fault, the drive will need a skilled repair technician for service

In the event of a bridge failure, it is strongly recommended that the drive be sent to a skilled technician for repair. The power devices used in modern drives are extremely static-sensitive and must be handled with special care to replace them effectively.


Stay tuned for Part 5! If you have any questions about the ACS800 or drive fault codes, contact our experts today!


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    • Yes, the last 16 faults are saved. Just press either double arrow key once (from actual display) and then use single arrow keys to scroll through the faults.

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