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Joined: Mar 2018
Posts: 48
J
newbie
newbie
J Offline
Joined: Mar 2018
Posts: 48
No prints remote job always fun. Got power going into ac frequency drive not powered coming out on motor uvw. All doors closed and safeties made up KU relay comes in and plc says safety ok door closed and pltf up. K5 contactor does not change state and no power coming from ac drive. Any help appreciated thanks. [email protected]

Joined: May 2011
Posts: 338
A
ABE Offline
Mechanic
Mechanic
A Offline
Joined: May 2011
Posts: 338
Just sent you an email

Joined: Nov 2016
Posts: 115
G
member
member
G Offline
Joined: Nov 2016
Posts: 115
Does it have a backup battery setup? If so check and make sure your batteries are good. Check with a load.

Joined: Nov 2009
Posts: 468
Journeyman
Journeyman
Joined: Nov 2009
Posts: 468
Sounds like the inverter is bad. Are the LEDs on?? What you are calling K5 is probably KS. Is KS in or out??

Joined: Mar 2018
Posts: 48
J
newbie
newbie
J Offline
Joined: Mar 2018
Posts: 48
Thanks for replies guys KS was out never came in suspect that it was that inverter. got prints for inverter and unit will be going back in a month or so to verify. The LED's were on had power coming in and not out. KS never came in though and it looked like some of the contacts on KS contactor were the fsr feed for the inverter.

Joined: Nov 2009
Posts: 468
Journeyman
Journeyman
Joined: Nov 2009
Posts: 468
KS is the safety string relay, it has to be in before the inverter can run.

Joined: Feb 2024
Posts: 9
Likes: 1
T
stranger
stranger
T Offline
Joined: Feb 2024
Posts: 9
Likes: 1
You ever figure out what was the issue? I have the exact same issue you had. No prints on the job making it a little more challenging.


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