Error at Parker 890SD 125kW

Hello, 

Have you referenced the manual's definition and possible solutions to this error code for your frame size yet (it refers to Overcurrent)? Found under the "Product Support" tab on the product page for the 890 drives.

https://ph.parker.com/us/17052/en/ac-variable-frequency-drives-hp-rated-ac890-series

Desat could be indicative of several things.

1. Is this a new application, or an existing application (if existing, how old?)
2. Has it always done this, since the machine was implemented?
3. Do you ever apply a shock load to the motor?
4. What are your boost levels?
5. Can you pinpoint it to one part of operation, that is rarely ever ran?

Now, this next part may sound odd. But what sort of cabinet/enclosure is it in? If the cabinet/enclosure it is in isn't properly grounded, you may see this rarely (somewhere due to improper grounding, a short occurs when charge instantaneously dissipates off the motor or out of the drive when a large enough potential forms).

Hi...this type of error appears on the keypad when the drive is unable to distinguish between an overcurrent/desat or overvoltage trip. When does this alarm appear on the keypad? Is it when the drive turns on, a particular point in your process, or is it when a run/jog command is given to the motor?

If you have a problem with random "overcurrent" trips , or random disturbance in speed accuracy without tripping, you should change encoder board to at least issue 06.