{"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 PHF input phase fault on the ATV61 and ATV71 drives?

Getting a PHF( input phase fault) on the ATV61 and ATV71 drives?

Product Line:


Drive error code displayed

PHF: input phase loss
This fault appears when an input phase is lost.
If 2 or 3 phase disappears while the drive is running, the drive will continue to run until the drive trips in another fault (USF for example).
This function could be disable by software with the parameter IPL=NO to supply the drive via the DC BUS voltage (range 230V and 480V).
Some drives (230V up to 7,5kW) have IPL=NO in factory setting because they can be supply in single phase.
Be careful, In the case where the motor is in generator mode then the fault doesn’t appear.
Be careful, the fault is stored in the EEPROM during a run.
Probable cause:
Drive incorrectly powered or fuse opened.
Loss of one input phase.
Use of a single-phase input on a three-phase ATV71.

Check the power connections and the fuses.
Use a three-phase distribution network.
Inhibit the IPL fault (input phase loss). 
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