Factory Cabling: Noise Is the Default Condition
Quick answer / TL;DR: Short answer: use shielded Cat6A near drives and welding equipment, bond the shield at one point, and keep data cable out of the same tray as motor feeds. Use conduit or armoured cable where forklifts and pallets are present, secure runs against vibration, and consider industrial connectors in washdown areas.
One category, three axes: shielding, conductor and jacket create the SKU.A factory floor is an electrically noisy place: motors, drives and welding equipment all emit interference. Cabling practice has to assume that noise is present.
Shielding, separation and containment are the three responses.
Threats and Answers
| Threat | Answer | Failure if ignored |
|---|
| EMI | Shielded cable and bonding | Packet loss |
| Impact | Conduit or armour | Crushed cable |
| Vibration | Regular supports | Fatigue at plugs |
| Washdown | IP-rated connectors | Corrosion |
The bonding row is decisive: an unbonded shield is worse than no shield, because it collects noise and radiates it into the pairs.
Installation Rules
- Separate trays from motor feeds
- Bond shields at one end
- Support every 50 cm
- Label at both ends
- Test after commissioning
The support spacing on a factory floor is tighter than in an office because vibration is continuous rather than occasional.
Real-World Applications
A production line uses shielded Cat6A in conduit between cabinets. A packaging area uses armoured cable where pallets pass.
Standards and Verification
| Reference | Relevance |
|---|
| IEC 61000 | EMC |
| TIA-568.2-D | Cabling |
| IEC 61156 | Industrial cable |
Machine-specific EMC requirements are not provided in the knowledge base. Confirm with the machine builder.
References
- IEC 61000 series, Electromagnetic compatibility
- TIA-568.2-D, Balanced Twisted-Pair Cabling
- IEC 61156-5, Symmetrical pair/quad cables
Practical Notes
Record link test results per cabinet. Factory faults are usually traced by comparison.
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Related reading: warehouse cabling — blogs/news/warehouse-cabling
Related reading: bulk cable — blogs/news/bulk-cable
Frequently Asked Questions
Shielded everywhere?
Near drives and welders.
Can data share a tray?
Not with motor feeds.
Armour or conduit?
Either, where impact is possible.
Why bond one end?
Avoids ground loops.
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