{}

Our Brands

Impact-Company-Logo-English Black-01-177x54

Welcome to the Schneider Electric Website

Welcome to our website.
Search FAQs
Why would an ATV61/71 display CLI during normal operation?

Article available in these languages: Turkish

Issue:
Why would an ATV61/71 display CLI during normal operation?

Product Line:
Altivar 61, Altivar 71

Environment:
All

Cause:
Drive: ATV71HD55N4, appl-soft 1.2IE12, comm-card VW3A3307. Motor: 55kW, 400V, 97A. In normal run the drive displays CLI, motor current displayed =37A (checked with external measurement). Current limitation 1 and 2 are set to 174A. The drive does not trip under these conditions, but trips for overload when overloaded. Only status seems to be incorrectly displayed.

Resolution:
The indication CLI is for the display and this value is not filtered compare to the value of the current LCR which it is filtered. On certain applications, if the current is unstable, then the drive is going to display CLI (peaks) while the current displayed LCR is lower (average). The instabilities can be due to a rigid speed loop. Decrease SPG and\or increase SIT.

The display of CLI can come from :
- the drive reaching the current limitation (CLI) set in 1.3 setting menu,
- the drive not following the acceleration ramp (increase to see if this is it),
- the drive being in voltage limitation, which can come from the voltage drop in DC choke or the main voltage not being high enough

To decrease the switching frequency can decrease voltage drop in DC choke and make the drive not be in CLI. You can also try to use another law.

Schneider Electric Thailand

Related products for Schneider Electric Thailand
Range:
Articles that might be helpful Users group

Discuss this topic with experts

Visit our Community for first-hand insights from experts and peers on this topic and more.
Related products for Schneider Electric Thailand
Range: