YOKOGAWA KS1*B Signal Cable

Product Details

KS1*B Product Description

The YOKOGAWA KS1*B is a system-matched signal cable engineered for seamless integration within the KS1 Series control architecture. Designed to maintain signal integrity across multi-layer industrial automation platforms, the KS1*B serves as a critical interconnect component between the controller layer, I/O expansion modules, and field instrumentation. Its precision-terminated connectors and shielded construction ensure reliable data transmission in electrically noisy industrial environments, supporting the full operational lifecycle of distributed control systems (DCS), programmable logic controllers (PLC), and hybrid automation platforms deployed across manufacturing, energy, petrochemical, water treatment, and process industries.

Within a YOKOGAWA KS1 Series architecture, the KS1*B cable bridges the controller backplane to downstream I/O assemblies, enabling deterministic signal flow from field sensors to the supervisory control layer. Its mechanical and electrical specifications are factory-matched to the KS1 Series rack system, eliminating compatibility risk during commissioning and reducing engineering overhead during system expansion or retrofit projects.

The KS1*B signal cable is not a standalone component — it is a functional element within a broader YOKOGAWA KS1 Series integrated automation platform. In a fully configured control architecture, the KS1*B operates in conjunction with the KS1 CPU module (the central processing unit managing scan cycles and logic execution), the KS1 power supply unit (providing regulated DC power to the backplane), and the KS1 I/O expansion modules (handling analog input, analog output, digital input, and digital output channels from field devices).

Signal routing from field transmitters — such as YOKOGAWA EJA-series pressure transmitters or YTA-series temperature transmitters — passes through marshalling terminals and into the I/O layer via the KS1*B cable assembly. The cable's shielded construction suppresses common-mode interference generated by variable frequency drives (VFDs), motor starters, and high-current switching equipment installed in adjacent control cabinet sections.

For communication-layer integration, the KS1 Series architecture supports YOKOGAWA's FOUNDATION Fieldbus, HART, and Modbus RTU/TCP communication gateways, which interface with the supervisory SCADA or DCS host via the KS1 communication module. The KS1*B cable maintains signal continuity between the I/O backplane and these communication interfaces, ensuring that process variable data reaches the operator workstation without latency or signal degradation.

In redundant control architectures, the KS1*B is deployed in paired configurations alongside the KS1 redundancy module, enabling hot-standby CPU switchover without signal interruption. This redundancy design is critical for continuous process industries — including refinery distillation columns, power generation turbine controls, and water treatment dosing systems — where unplanned downtime carries significant operational and safety consequences.

Additional components commonly integrated with the KS1*B in a complete panel build include: YOKOGAWA KS1 terminal base modules for field wiring termination, KS1 bus connectors for backplane expansion, YOKOGAWA ProSafe-RS safety I/O modules for SIL-rated interlock circuits, and industrial Ethernet switches supporting PROFINET or EtherNet/IP topologies for plant-wide network integration. Signal isolators and surge protection devices are also recommended at field cable entry points to protect the KS1*B and connected I/O modules from transient overvoltage events.

Manufacturing & Discrete Automation: In automotive assembly and electronics manufacturing lines, the KS1*B supports high-density I/O configurations where hundreds of digital signals from proximity sensors, photoelectric sensors, and servo drive feedback circuits must be reliably routed to the PLC controller layer. The cable's system-matched design reduces wiring errors during panel assembly and accelerates FAT (Factory Acceptance Testing) timelines.

Power Generation & Energy: In thermal power plants and renewable energy substations, the KS1*B interconnects protection relay I/O, generator excitation control signals, and turbine governor feedback within the DCS control cabinet. Its EMI shielding is particularly valuable in high-voltage switchgear environments where electromagnetic interference from bus bars and contactors can corrupt unshielded signal cables.

Petrochemical & Refining: Refinery process units — including crude distillation, hydrotreating, and catalytic cracking — rely on the KS1 Series architecture for continuous process variable monitoring. The KS1*B maintains signal integrity for 4–20 mA analog loops connecting field transmitters to the DCS I/O layer, supporting accurate PID control of temperature, pressure, flow, and level loops.

Water & Wastewater Treatment: Municipal water treatment facilities use the KS1 Series for SCADA-integrated pump control, chemical dosing, and filtration process management. The KS1*B cable's robust construction withstands the humid, chemically aggressive environments typical of water treatment control rooms.

Mining & Metallurgy: In ore processing and smelting operations, the KS1*B supports conveyor drive control, crusher motor management, and furnace temperature regulation within centralized PLC/DCS architectures, where vibration and dust ingress are persistent environmental challenges.

Q1: Is the KS1*B compatible with all KS1 Series rack configurations, including expanded I/O chassis? Yes. The KS1*B is factory-designed to interface with the full range of KS1 Series rack configurations, including base racks, expansion racks, and remote I/O chassis. The cable's connector geometry and signal pinout are standardized across the KS1 platform, ensuring plug-and-play compatibility without requiring field modification. For multi-rack architectures, verify the cable length variant (indicated by the suffix designation) matches the physical distance between rack sections in your panel layout.

Q2: Can the KS1*B be used in a redundant CPU architecture, and what is the recommended installation practice? The KS1*B is fully compatible with YOKOGAWA KS1 Series redundant CPU configurations. In a redundant architecture, two KS1*B cables are installed — one connecting the primary CPU module to the I/O backplane, and one connecting the standby CPU module to the same backplane via the redundancy bus. During commissioning, verify that both cables are seated firmly and that the redundancy module's status LEDs confirm active synchronization between primary and standby controllers before placing the system in service.

Q3: What is the warranty coverage for the KS1*B, and what is the typical lead time for replacement stock? The KS1*B is covered by a 12-Month Warranty from the date of shipment, covering manufacturing defects in materials and workmanship. Replacement units are maintained in stock and typically ship within 3–7 business days globally. For urgent maintenance requirements, expedited shipping options are available. Contact our technical team at [email protected] or +86 18359268345 to confirm current inventory levels and arrange priority dispatch.