encoder sheild

[faehigkeit1]

Hi All, when using a sheilded cable for an encoder connection, should I ground the sheild to the encoder or only back at the control cabinet?
Thanks
Dean

 

[OkiePC]

Only ground it at one end to avoid ground loop noise issues.

 

[faehigkeit1]

Which end would be the best?

 

[MrDave]

For best practice it is recommended that shield should only be grounded at the source.

 

[John Hawkins]

cabinet------- one end only

 

[Gup]

We use SEW Eurodrive motors/encoders. The shield is connected on both ends, but the encoder is mounted electrically isolated from the rest of the motor.
The advantage is that the encoder housing is securely shielded via the cable/connector and that the encoder and cable are within one shield.
We never have any EMC problems with the encoders, even when we use them close to spotwelding and migwelding applications.