[ Log In ]
[ Register ]

Question #: 14408

Question: My Spindle has 4 pins but only the U, V and W terminals at used for the Spindle. What about the 4th pin?

Current Solution

The terminals of U, V and W from the VFD (Variable Frequency Drive) connects to the three coils (first three pins of the connector) of the spindle. The 4th pin in the spindle is typically not connected; however, bring a wire from the PE (Protective Earth or Earth Ground) from the VFD and connect it to one of the screws of the connector on the spindle. This will ground the body of the spindle.

Additional Information:
The winding in your motor is start connected, U, V & W are the 3-phases of the motor and the 4th one is the common. Same as star connection.


Other Possible Solutions to this Question

Get Help with:
This Product
Tech Support
This Product
Order Query
Tech Support
Not logged in. Log In Register
Track Order(s)
View Order(s)
I Want to Schecule a One-On-One Paid Tech Support Session
Book an Appointment Pertaining to a BuildYourCNC Product (Free)
Ask a Quesion Below (Free):
Book an Appointment Pertaining Other Equipment ($60/half hour)
Book an Immedite Appointment Pertaining Other Equipment ($120/half hour)
Ask a Quesion Below (Free):
Waiting for response... I may not answer immediately, but I was notified on my cellular phone so my response is forthcoming. If I don't respond immediately, you can always go to the [My Account] page to see all of our chats at any time.