Shielding and routing bus cables
NOTICE
Flowing compensating currents due to the incorrect cable type, inadequate shielding, and/or the incorrect routing of bus cables.
Damage to property.
- In case of fluctuations of ground potential, a compensating current may flow via the bilaterally connected shield that is also connected to the ground potential (FE). Make sure you always supply adequate equipotential bonding in accordance with the relevant IEC regulations.
Only use shielded cables and connection elements that meet the requirements of category 5, class D as per IEC 11801 edition 2.0.
You can take the following measures to minimize electrical interference:
- Tighten the retaining screws of connectors, modules, and equipotential bonding cables hand-tight.
- Only use connectors with a metal housing or a metalized housing.
- Connect the shielding in the connector over a wide surface area.
- Apply the shielding of the bus cable on both ends.
- Always route the signal and bus cables spatially separated from power cables (motor leads) and, whenever possible, in separate cable ducts.
- Use metallic, grounded cable racks in industrial environments.
- Route the signal cable and the corresponding equipotential bonding close to each other using the shortest possible route.
- Avoid using plug connectors to extend bus cables.
- Route the bus cables closely along existing grounding surfaces.
