Issue:
LStP alarm code on ATV21/212.
Product Line:
ATV21, ATV212, S-Flex
Environment:
All
Cause:
NA
Resolution:
LSTP is not a fault, but rather an alarm for Low Speed Stop. It is an Auto-stop based on continuous operation of the VFD at speeds below a threshold (LL + F391) for a period of time (F256).
Check to see if the automatic stop function with F256 was activated. To deactivate, set F256 = 0.
The VFD will continue to run in LStP alarm until it gets a speed reference above the threshold (LL+F391).
To deactivate the LStP alarm, increase the Command Frequency to a value above the Low Speed threshold (LL+F391) or turn off the Run Command.
LStP alarm code on ATV21/212.
Product Line:
ATV21, ATV212, S-Flex
Environment:
All
Cause:
NA
Resolution:
LSTP is not a fault, but rather an alarm for Low Speed Stop. It is an Auto-stop based on continuous operation of the VFD at speeds below a threshold (LL + F391) for a period of time (F256).
Check to see if the automatic stop function with F256 was activated. To deactivate, set F256 = 0.
The VFD will continue to run in LStP alarm until it gets a speed reference above the threshold (LL+F391).
To deactivate the LStP alarm, increase the Command Frequency to a value above the Low Speed threshold (LL+F391) or turn off the Run Command.
Released for: Schneider Electric Hong Kong
Need help?
Product Selector
Quickly and easily find the right products and accessories for your applications.
Get a Quote
Start your sales enquiry online and an expert will connect with you.
Where to buy?
Easily find the nearest Schneider Electric distributor in your location.
Help Centre
Find support resources for all your needs, in one place.
