Configured for high-density I/O connectivity within CENTUM and FCN/FCJ controller platforms, the Yokogawa KS1-35 (KS1-35 Signal Cable) provides direct physical and electrical execution of multi-point signal transmission between field termination assemblies and DCS/PLC backplanes.

Suffix Breakdown & Model Matrix

• KS1: Base series designation for Yokogawa signal cable assemblies used in industrial process control.
• 35: Represents the configuration identifier for specific pin-mapping and cable assembly length requirements.

Hardware Specifications

Signal Integrity and EMI Mitigation

The KS1-35 is engineered to maintain data integrity across high-density I/O arrays. The cable utilizes a multi-conductor structure with individual twist-pairing to minimize crosstalk between adjacent analog and digital signal channels. The high-coverage braided shielding effectively suppresses electromagnetic interference (EMI) generated by surrounding variable frequency drives and high-voltage power distribution infrastructure.

Frequently Asked Questions

Q: Is the KS1-35 compatible with both analog and digital I/O modules?

A: Yes. The KS1-35 is a passive transmission medium designed for use with both analog (4-20 mA) and digital (24 V DC) I/O modules, provided the terminal board pinout corresponds to the KS1 series standard.

Q: Can this cable be used in high-temperature environments?

A: The cable is rated for operation up to 70 deg C. In environments exceeding this threshold, the PVC jacket may undergo thermal degradation, leading to insulation failure. Use heat-resistant protective conduit if routing near steam piping or high-heat process equipment.

Field Installation Guidelines

• Bending Constraints: Maintain a minimum bending radius of at least 10 times the outer diameter of the cable. Excessive bending stresses the internal conductor terminations and can degrade signal shielding continuity.
• Connector Engagement: Verify that the multi-pin connector is fully seated and the locking mechanisms are engaged. Improper seating is the primary cause of intermittent I/O communication faults in high-density backplanes.
• Grounding: Terminate the cable shield drain wire at the designated instrument grounding lug on the terminal assembly. Ensure the chassis ground has a low-impedance path to the primary plant earth to maximize EMI protection.
• Routing: Segregate the KS1-35 from power cabling. Maintain a minimum separation distance of 300 mm from high-voltage AC lines to prevent inductive noise coupling.