WHAT IS DELTA WYE CONNECTION IN MOTOR CONTROL

A GFF error on most Vfd's refer to a in-proper ground, no ground detected , or a possible ground loop. Ground loops are a common mistake, where in the attempt the user grounds two or more devices or the load to the vfd as well as the mains ground.

the model your using is a three phase input, it can handle delta or wye, style of wiring, but all require a good ground source. If anything, just run a dedicated ground to each device and don't run ground wires to each other. It's only used for voltage reference between the phases. Without it, the vfd cannot work properly and will error.

Call an electrician who knows the difference between Delta and Wye! Delta is Dangerous!

when your dealing with a high leg as long as your using two phase wires it is balanced. any two legs will give you 240 volts a.c.

Its going to depend on whether you are connecting to 240 volt or 440 volts...

It also depends on whether it is a 'wye' wound motor or a 'delta' wound motor.

A nine wire motor is probably a multi-voltage motor capable of running on either 240 or 440 volts. For operation on low voltage, 240 v, the windings must be connected in parallel whereas hi voltage operation makes it necessary to have the windings wired in series.

I will not give the details on the winding connections because the process to determine whether it is a 'delta' or 'wye' wound motor is too involved to derscribe on a forum. But..... if it is a 'wye' wound motor, there will be three additional wire connections 10, 11, and 12, that are wired together and under the end bell and not accessible.

We don't want to 'smoke' your motor, so let the suggestion be to contact a reputable and qualified electrician who you trust to determine what's required and to connect it without the potential for damage.

208 Volt 2-wire is generally achieved by pulling two hot wires off 3-phase 120/208 Wye or 208 Delta, or Highleg to center tap off high leg delta.
http://waterheatertimer.org/How-to-wire-3-phase-electric.html
http://waterheatertimer.org/images/3-phase-timer-diagram3-T104-208-240.jpg

Since each of these three phase systems also offers 120volt for lights, and a dimmer can be used for lights, then I wonder what you are using dimmer for?

208 volts.can be controlled by turning off one hot of the two hot wires.
Install dimmer on one of the hot wires, and see what happens.
Is the dimmer rated for 208 volts?

Add a comment and say what you discover.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

check 5 auxiliary contact of the magnetic contactor

I don't know why your question is bound to this special breaker.

If your question is common, the wye/delta is a way to reduce the starting current of a large three phase asinchronous motor.
When a three phase motor is first connected in wye (star), the starting (peak) current is about 3 times less than this in delta. When already in motion the electromotive force will make the peak current when turned in delta much less, than that with a stopped motor.

connection would be easier in the wye. single phase current is easier to pull of of one leg in the wye to get your common that you would not have in a delta connection. three phase doesnt require a nuetral. just 3 phase 120degrees out of phase from each other

It is part of the cover for the wiper motor.

Why do you want to run the motor in the delta configuration? The VFD will change the speed to anything you want to do. The delta and Wye connections are normally used to change the speed of a motor. That's what the VFD is for...??

If you need further help, I’m available over the phone at https://www.6ya.com/expert/craig_3fa289bf857b1a3c