The Yokogawa KS1-20*B, also cataloged as the KS1 Signal Cable, operates as a dedicated hardware component for multi-channel signal interconnection within CENTUM CS / CENTUM VP system cabinets.
Suffix Breakdown & Model Matrix
Parameter / Suffix Code
Specification Breakdown
Base Model (KS1)
Signal Cable (40-40 pins)
Cable Length (-20)
Cable length up to 20 m
*Style Code (B)
Style B hardware configuration
Hardware Specifications
Parameter
Specification
Model
KS1-20*B
Brand
Yokogawa
Origin
Japan
Weight
Shipping Weight 2 kg
Dimensions
Cable length up to 20 m
Operating Temp
-20 to 70 deg C
Power Consumption
Passive interconnect assembly (0 W)
Connector Type
40-pin to 40-pin ribbon/multi-core connector
4-20 mA HART Loop Protocol & Channel Isolation
The signal cable assembly maintains high dielectric isolation between individual multi-core signal conductors to prevent capacitive cross-talk across high-density I/O connections. Integrated overall shielding suppresses electromagnetic interference (EMI), preserving signal fidelity for 4-20 mA HART loop protocol communications passing between I/O modules and terminal interface units. High-spec insulation materials ensure stable conductor impedance and CJC signal accuracy across extended operating environments from -20 to 70 deg C.
Frequently Asked Questions
Q: What precautions should be taken regarding the bend radius when installing the KS1-20*B cable assembly?
A: Maintain a minimum cable bend radius of 10 times the outer cable diameter during installation to prevent internal conductor stress and connector strain.
Q: Is the KS1-20*B 40-pin cable suitable for outdoor direct burial applications?
A: No, the cable assembly is specified for indoor, tray, or conduit mounting within control cabinets and must be protected from direct moisture and chemical exposure.
Field Installation Guidelines
Connect the 40-pin connectors at each end of the KS1-20*B cable directly to the designated I/O module and terminal block interfaces, ensuring side locking clips engage fully to prevent accidental loosening under vibration. Route the 20 m cable length through dedicated low-voltage wiring ducts, maintaining a minimum 150 mm distance from high-power AC conductors. Ground the cable braid shield clamp firmly to the protective earth (PE) bus bar at the cabinet entry point using short ground straps. Ensure ambient operating conditions stay strictly within -20 to 70 deg C.
