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Video: What causes an StF fault on an Altistart 22 Soft Starter?

Article available in these languages: Czech, Tiếng Tây Ban Nha

Issue:
Troubleshooting StF Fault on Altistart 22

Product Line:
ATS22 Soft Starter

Environment:
All models

Cause:
The StF fault means the starter has exceeded the maximum start time setting, tLS, in the SEt menu.

Resolution:
tLS needs to be set higher than the ACC time.
For example:  If ACC (ramp up time) is 10 seconds, then set the tLS max starting time to 20 seconds.

If ILt current limit is too low, the motor may not reach full speed within tLS limit.
Mechanical problems on the load may prevent the motor from reaching full speed within tLS limit.
See page 51 in the ATS22 User Manual:



The following video is a guide for troubleshooting the StF fault code, indicating a longer than expected start-up time, on the Altistart ATS22 soft starter by adjusting the tLS (maximum start time in seconds) and ACC (ramp up time) parameters under the SET menu. tLS must be set higher then the ACC time value.

Schneider Electric Việt Nam

Phần đính kèm

ATS22_programming installation_Manual.pdfATS22_programming installation_Manual.pdf [5.95 MB]
Tìm hiểu thêm
Phạm vi:
Altistart 22
Tìm hiểu thêm
Phạm vi:
Altistart 22