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 provides 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 a breeze. 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 ran a five-part series covering the most common fault codes encountered on the drive.
Below you will find a list of each fault covered in the series, a brief description of each fault and a hyperlink to each part in the series. We encourage you to read each part in full, as they include important information on possible causes, troubleshooting techniques and suggested resolutions for each fault.
- DC Overvoltage – The drive will display “DC OVERVOLTAGE (3210)” on the control panel. This fault occurs when the intermediate circuit DC voltage exceeds a certain trip point. This trip point varies, depending on the whether the drive is 400 or 500 V unit.
- Supply Phase – The drive will display “SUPPLY PHASE (3130)” on the control panel. This fault code indicates an oscillating Intermediate DC BUS circuit voltage, typically caused by a missing phase, blown fuse or rectifier bridge fault.
- Motor Phase – The drive will display “MOTOR PHASE (FF56)” on the control panel. When the drive detects a motor phase fault, it is indicating a lost phase due to failure in the motor, motor cabling or within the drive itself. A mistake at parameter 30.16 may also cause the fault to trigger.
- Underload – The drive will display “UNDERLOAD (FF6A)” on the control panel. This fault indicates that the motor load is too low, typically due to a problem in the driven load. A release mechanism may have been engaged, or airflow is restricted in the case of an HVAC blower.
- Control Board Temperature – The drive will display “CTRL B TEMP (4110)” on the control panel. This fault occurs when the control board temperature exceeds its max rated temperature, or 88°C. The drive will shut down to prevent catastrophic failure.
- Slot Overlap – The drive will display “SLOT OVERLAP (FF8A)” on the control panel. This fault means the drive has two option modules operating with the same connection interface selection. The fault triggers when these modules conflict with each other.
- Analog Input < Minimum Function – The drive will display “AI < MIN FUNCTION (8110)” on the control panel. This fault indicates that the analog control signal is below the minimum allowed value. The fault is typically triggered by an incorrect signal level or a failure in the control wiring.
- Short Circuit – The drive will display “SHORT CIRCUIT (2340)” on the control panel. This fault means the drive detects a short in the motor, along the motor cables or at the output inverter bridge.
- Overcurrent – The drive will display “OVERCURRENT (2310)” on the control panel. This fault triggers when the output current suddenly exceeds the trip limit. The limit is at a fixed point – 200% the drive’s rated output current. Generally, the motor load is at fault here.
- Heatsink Temperature – The drive will display “ACS800 TEMP (4210)” on the control panel. This fault triggers when drive’s IGBT reaches its maximum rated temperature. The drive may not be able to handle the motor’s power, or the environment is simply too hot. In any case, this fault will shut down the drive.
If you have any questions about the ACS800 or drive fault codes, contact our experts today!