Product Short Description

Product Introduction

KS1-10-B is a factory-terminated 40-pin dual-ended shielded signal cable exclusively designed for Yokogawa CENTUM CS1000, CS3000 and CENTUM VP DCS racks. It transmits analog 4–20mA, digital discrete and bus communication signals between I/O modules, field terminal blocks and control station backplanes with zero signal distortion under industrial EMI interference.

Description

Technical Specifications

  • Rated Voltage: 300V AC / DC
  • Standard Length: 10 Meters
  • Outer Diameter: 7.8 mm
  • Minimum Bend Radius: 5× cable outer diameter (39 mm)
  • Operating Temperature Range: -15°C ~ +70°C
  • Storage Temperature Range: -40°C ~ +80°C
  • Flame Retardant Grade: IEC 60332-1
  • Pin Configuration: 40-pin male-male industrial D-sub connectors
  • Shield Structure: Aluminium foil full coverage + drain wire 360° shielding
  • Insulation Material: Flame-retardant PVC
  • Outer Sheath Material: Grey flexible PVC
  • Total Net Weight: 1.6 kg
  • Compliance Certifications: CE, RoHS 2.0, REACH

Function Features

  1. Full 360° shielding eliminates cross-talk and electromagnetic interference from high-power inverters, transformers and motor cables
  2. Pre-terminated factory connectors eliminate field wiring errors and insulation damage
  3. Color-coded internal conductors match Yokogawa DCS standard wiring diagrams
  4. Low capacitance design supports long-distance stable analog signal transmission
  5. Flexible cable structure adapts cabinet wiring, tray routing and bending installation

Performance Parameters

  • Maximum signal transmission distance: 10m fixed factory specification
  • Capacitance per meter: ≤120 pF/m
  • Insulation resistance: ≥1000 MΩ·km at 20°C
  • Dielectric withstand voltage: 2000V AC for 1 minute
  • EMI attenuation: ≥60dB at 1MHz ~ 100MHz frequency band

Material Composition

  • Inner conductor: Tinned copper multi-strand fine wire
  • Core insulation: Flame retardant PVC
  • Shield layer: Aluminium polyester foil + 0.5mm² tinned copper drain wire
  • Outer sheath: Low-smoke zero-halogen flexible PVC
  • Connector housing: Reinforced PA66 engineering plastic
  • Connector pins: Gold-plated copper alloy

Structural Characteristics

  • Round single-unit cable structure, single shield layer integrated design
  • Dual 40-pin D-sub locking connectors at both ends with screw locking mechanism
  • Internal conductor bundle with separator to avoid core friction damage
  • Strain relief rubber sleeves at both cable ends to prevent conductor breakage from bending fatigue

Working Principle

Transmits low-level analog and digital control signals via tinned copper conductors; continuous foil shielding layer diverts external electromagnetic noise to cabinet ground through drain wire, isolating interference from reaching signal cores to maintain accurate voltage/current signal transmission to DCS I/O modules.

Advantage Highlights

  1. Factory pre-assembled with guaranteed pin-to-pin continuity, no on-site termination labor
  2. Optimized shielding performance for petrochemical, power plant high-interference environments
  3. Direct plug-and-play compatibility with all Yokogawa KS1 series I/O racks
  4. Flame retardant outer sheath meets industrial fire safety standards
  5. Uniform impedance matching eliminates signal phase shift for high-speed bus communication

Applicable Industries

Oil & gas refining, thermal power generation, chemical processing, pharmaceutical manufacturing, water treatment, pulp & paper, metallurgical process control

Installation Requirements

  1. Route separately from high-current power cables with minimum 30cm separation distance
  2. Secure drain wire single-point grounding at control cabinet backplane only (no dual-end grounding)
  3. Maintain minimum bend radius of 39mm during routing, no sharp kinks
  4. Install cable tray with plastic separators to avoid abrasion damage
  5. Lock connector screws to 0.8 N·m torque to prevent loose contact

Usage Precautions

  1. Do not cut or modify cable length; modification voids shielding integrity and factory warranty
  2. Avoid exposure to direct UV sunlight and corrosive chemical vapors long-term
  3. Prevent cable compression under heavy mechanical loads
  4. Disconnect power to DCS rack before plugging/unplugging connectors
  5. Store coiled cable at room temperature without over-tight binding to avoid sheath deformation

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