Multi-Core Control Cables for SCADA and Marshalling Applications
An industry discussion on the IET EngX Wiring Regulations forum highlights practical considerations for multi-core signaling cables in SCADA (Supervisory Control and Data Acquisition) applications .
Key Discussion Points:
A marshalling board with over 50 volt-free contacts needs to be connected to a SCADA system
Multiple cables are required due to the number of signals
Two approaches were considered:
Modifying the marshalling board to add more common terminals
Using multiple cables with one core set aside for the common return in each cable
Key Considerations:
Standard compliance: BS7671 regulations impact wiring approaches
EMC concerns: Not following manufacturer's instructions for EMC can lead to issues
Maintainability: The principle of least surprise for maintenance teams is important
Design coordination: Multiple design teams must coordinate on SCADA specifications
This discussion highlights the practical engineering challenges in multi-core control cable installations for industrial control systems .
