3 phase motor and VFD

**benhoskin** · 4th March 2015, 10:11 PM

I have a CMG 3 phase motor 240v Delta, 415v star. Connected to a teco/Westinghouse FM50 drive, Single phase input to 3 phase output.
The problem is when connected in delta the motor hardly turns(set for 50hz ) and is very noisy. Wired in star the motor turns at correct speed but lacks power. Suggestions?

**jhovel** · 4th March 2015, 10:18 PM

I would suspect some wrong settings of the VFD. Perhaps reset to Factory defaults and then adjust the parameters again to match those of the motor. I don't have a Teco, but other here have and may be able to walk you through them.

**benhoskin** · 4th March 2015, 10:29 PM

I have tried the reset and another motor. But thanks

**BobL** · 4th March 2015, 10:32 PM

The last time that happened to me it turned out to be a dirty contact strip inside the terminal connection box.
Photos of the motor name plate and the terminal connection box in ∆ and Y connection mode might be useful.

**benhoskin** · 4th March 2015, 11:19 PM

Here are the nameplate and wiring connections.
IMG_2241.jpg IMG_2242.JPG

**BobL** · 4th March 2015, 11:36 PM

Thanks for those photos
Now a photo of the actual terminal block would be good to see.

**benhoskin** · 5th March 2015, 01:34 AM

Thanks for the pointers, it is now up and running at full power. Now to make It do some work and decide if it needs more.
I was a combination of program settings and wiring.

Ben

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