Why would a ATV61 drive be running ok and then goes to RDY status?

Issue:
ATV61 drive running fine and then changes to RDY status.

Product Line:
ATV61 Drives, Altivar 61

Environment:
Run Command

Cause:
n/a

Resolution:
The ATV61 was running ok and then went to RDY.  Needs to check the run command.  For 2-wire control. LI1 should have +24v. Can go to 1.2 and select I/O map, and check the status of LI1 or measure LI1 at the terminal card.  If it drops low, they are loosing the run command.

Also, for 3-wire control or HMI control, a momentary loss of the safety circuit input on PWR will take status to RDY.  Verify the factory jumper on +24-PWR or the safety circuit to PWR.  Consider that a 24Vdc voltage sag would have same results.  Check 24Vdc circuits for grounding.

פורסם עבור: שניידר אלקטריק ישראל