{"searchBar":{"inputPlaceholder":"Search by keyword or ask a question","searchBtn":"Search","error":"Please enter a keyword to search"}}

Welcome to the Schneider Electric Website

Welcome to our website.

Select your location

Welcome the the Schneider Electric French website. It looks like you are located in the United States, would you like to change your location?

Traduisez en francais
{"support":{"yesButton":"yes","noButton":"no","feedback":{"title":"What can we do to improve?"},"submitButton":"Submit","successMessage":"Thank you for your feedback","title":"Was this helpful?","feedbackPercentLabel":"of people found this helpful","captcha":{"error":"Please tick the box"}}}
Search FAQs

What can cause an OL1 fault on the ATV21 or ATV212 drives?

OL1 fault on ATV21/ATV212 drives.

Product line:
Altivar ATV212, ATV21 

All models, all serial numbers 

OL1 is a drive overload fault.  The motor is pulling to many amps and the internal overload is tripping.


OL1 is an overload fault.
ITH parameter under main menu AUF is what determines the overload settings for a motor.  It is normally programmed to match motor FLA.
Confirm that the motor settings including uL, F415 and F417 match your motor name plate.
Check ACC time and make sure it is not too short a ramp up time.  
Set AU1 to 0.
Measure current draw by motor if possible at the output to the motor.  If the current draw surpasses ITH value then it will eventually fault out on OL1 given enough time has passed.
Check for power drop in the line side of the drive.
Set PT to 0.

Explore more

Can't find what you are looking for?

Reach out to our customer care team if you have any questions or need more technical support.
Explore more