Instrument cable issue
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The cable running from the field transmitter to the PLC should be a shielded cable; if ordinary control cables are used instead, each cable is protected by a galvanized tube. The distance between the instrument cables and the power cables exceeds 1 meter. Experts with experience in on-site debugging, please advise: will this result in significant interference? Is it still necessary to replace the shielded cable?
The cable running from the field transmitter to the PLC should be a shielded cable; if ordinary control cables are used instead, each cable is protected by a galvanized tube. The distance between the instrument cables and the power cables exceeds 1 meter. Experts with experience in on-site debugging, please advise: will this result in significant interference? Is it still necessary to replace the shielded cable?
What type of field instruments are used? How far is it?
Sure, everything is shielded with galvanized pipes! Remember to ground the galvanized pipe!
There should be no problem with adding galvanized pipes. It’s still better to use shielded cables in the future.
Check the specifications; there are variations in the transmission distance and the distance from the power cable
No problem, the power cable is not above 380.
If it exceeds 1 meter. It’s fine even if it’s not a dedicated control cable. As long as it doesn’t go above 380
As long as the power cable is not at a very high voltage, that’s fine; also, ground your galvanized pipe, and that will do.
There’s definitely no problem; this is how we do it here – the instrument cables don’t have a shielding layer, but they’re all enclosed in galvanized tubes
It should be fine, make sure proper grounding is in place. We do the same.