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.
If an overcurrent fault occurs, the drive’s display will show “OVERCURRENT (2310)” on the control panel, 3rd line down.
This fault triggers when the output current suddenly exceeds its trip limit. This trip limit is at a fixed point – 200% of the drive’s rated output current.
- Check motor load
- Check to make sure the acceleration time is not too short
- Check current at the motor and motor cables, including phasing
- Check that there are no power factor correction capacitors or surge absorbers in motor cables
- Check the encoder cable, including phasing
The first possible cause (motor load) refers to a mechanical issue, possibly a jam along the line. Improper motor phasing would make the motor run in the wrong direction, and if the machine doesn’t want to turn in opposite direction this could result in an overcurrent fault. If, when used, the encoder is not phased correctly it can easily cause a high gain speed regulator to surge current beyond the drive’s trip point.
Heatsink Temperature #4210
For a heatsink temperature fault, the ACS800 display will show “ACS800 TEMP (4210)” on the control panel, 3rd line down.
This fault means the drive’s IGBT temperature is excessive. The fault trip limit is 100% the rated temperature.
- Ambient temperature exceeds 40°C
- Cooling fan failure
- Heatsink air flow blockage
- Contamination build up on the heatsink
- Check the motor power against the drive’s rated power
The fifth cause (motor power) refers to a less common scenario, but in this case the motor may have too large a power rating for the drive to handle.
This concludes our five-part series! If you have any questions about the ACS800 or drive fault codes, contact our experts today!