Configured for high-density signal distribution in Yokogawa distributed control systems, the Yokogawa KS1-30*B (KS1 Signal Cable) provides direct physical/electrical execution of 40-pin to 40-pin inter-module communication pathways.

Suffix Breakdown & Model Matrix

• KS1: Base model series for system bus and I/O signal cable assemblies.
• 30: Denotes a cable length of 20 meters.
• *B: Style code indicating the specific shielding integrity and connector pin-out configuration.

Hardware Specifications

Process Control and Loop Integrity

The KS1-30*B is engineered to interface with Yokogawa FIO and legacy I/O modules, supporting 4-20 mA HART loop protocol connectivity between field terminal boards and system backplanes. The cable employs a multi-core shielded architecture, which is critical for maintaining channel-to-channel isolation and reducing crosstalk in high-density rack configurations. Each pin-out is matched to minimize impedance discontinuities, ensuring that analog signals and digital pulses are transmitted without attenuation. The integration of high-grade shielding materials provides effective protection against electromagnetic interference (EMI) typically encountered in dense cabinet environments.

Frequently Asked Questions

Q: Can the KS1-30*B be field-terminated or shortened to fit specific cabinet runs?

A: No. The cable is factory-assembled and tested to maintain signal integrity. Cutting or re-terminating the cable will alter the impedance characteristics and shielding continuity, leading to potential communication errors or analog signal drift.

Q: Is this cable compatible with both digital and analog input modules?

A: Yes, provided the pin-out mapping for the specific I/O module series matches the 40-pin interface configuration of the KS1-30*B. Verify against the specific I/O module datasheet to ensure correct signal allocation.

Field Installation Guidelines

• Routing: Ensure that signal cables are routed through dedicated, grounded metallic conduits or cable trays to prevent inductive noise. Avoid routing parallel to AC power cabling or high-current motor drive output lines.
• Connector Integrity: When mating the 40-pin connectors, ensure pins are aligned before applying pressure. Tighten connector locking screws to the specified torque to maintain low contact resistance.
• Grounding: The cable shield must be bonded to the cabinet ground bus at the designated termination point. A stable, low-impedance ground reference is required to prevent common-mode noise corruption of the data signals.
• Thermal Management: While the cable is rated for -20 deg C to 70 deg C, avoid routing in close proximity to heat sources, such as heat sinks or ventilation exhaust paths, to prevent premature insulation degradation.