10/22/2018 2:32 PM | |
Joined: 10/11/2006 Last visit: 9/18/2024 Posts: 5906 Rating: (804)
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Dear AZBSL Foil screens for the encoder and drives have to be avoided. In the case you described it is good that the shields of the encoder cable are isolated against ground. Please consider, that the motors shielding is also guided isolated through the junction box. |
With best regards, |
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10/22/2018 9:52 PM | |
Joined: 1/15/2018 Last visit: 7/26/2024 Posts: 18 Rating: (0) |
Thank you for the feedback. Motor screen is isolated along the way for this particular application. The larger motor as mentioned previously does not have a multicore shielded cable, instead it uses 3x 185mm2 single core screened cables. Currently the screen is connected at both ends but the crane guidelines (sorry should have mentioned this is a gantry crane) state that for single cores >20m in length you should not be earthing screen at motor due to possible screen currents. I only found this in one document, are you able to verify this for me? Thanks, AZ
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