Configured for high-integrity data transmission in distributed control systems, the Yokogawa KS9-10*A (KS9 Signal Cable) provides direct physical/electrical execution of bus communication between system nodes and I/O subsystems.

Suffix Breakdown & Model Matrix

• KS9: Base model series for system bus and I/O signal cables.
• 10: Denotes cable length (10 meters).
• *A: Represents the specific connector interface and shielding configuration optimized for system bus compatibility.

Hardware Specifications

System Bus Communication Integrity

The KS9-10*A is engineered to maintain signal fidelity across Yokogawa V net, ER, ESB, and RIO bus architectures. The shielding configuration is specific to the bus requirement; coaxial variants provide low-loss transmission for high-frequency V net and ER bus signals, while twisted-pair construction for ESB/RIO buses provides effective common-mode noise rejection. Each cable assembly ensures channel-to-channel isolation by maintaining strict impedance matching, which is critical for preventing packet loss and timing jitters in deterministic control networks.

Frequently Asked Questions

Q: Can the KS9-10*A be field-terminated or shortened? A: No. The cable is factory-terminated to maintain exact impedance and shielding specifications. Altering the cable length or connector interface will cause signal reflections and communication faults on system buses.

Q: Are there specific installation requirements for the V net coaxial cables? A: Yes. The minimum bending radius of 100 mm must be strictly observed. Exceeding this radius can cause deformation of the dielectric layer, leading to impedance mismatch and subsequent link failures.

Field Installation Guidelines

• Routing: Ensure all bus cables are installed in dedicated, grounded metal conduits or trays. Segregate bus cabling from high-power AC lines by a minimum of 300 mm to eliminate inductive interference.
• Connector Care: Inspect N-type and BNC connectors for debris before mating. Ensure connectors are tightened to the manufacturer's specified torque to prevent contact resistance variations.
• Grounding: Ensure the cable shielding is correctly bonded to the system cabinet ground at the designated points. Consistent grounding is mandatory to maintain the signal-to-noise ratio required for reliable DCS bus operation.
• Environmental: Although rated for -20 deg C to 70 deg C, avoid routing cables through areas subject to extreme thermal cycling, as repeated expansion and contraction can compromise the integrity of the shielding braid over time.