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Yokogawa KS1-10*B KS1 Signal Cable

The Yokogawa KS1-10*B, also cataloged as the KS1 Signal Cable, operates as a dedicated hardware component for transmitting low-noise 20-pair signal data within CENTUM VP and ProSafe-RS DCS networks. Its 40-to-40 pin dual connector arrangement ensures consistent electrical continuity and channel-to-channel isolation across process control I/O loops.

Hardware Specifications

Parameter	Specification
ModelBrand	KS1-10*B
Origin	Japan
Weight	2.0 kg (approximate, depends on length)
Dimensions	Cable length up to 10 m; 40-pin connectors
OperatingTemp	-20 to 70 degC
PowerConsumption	Passive signal cable; negligible power draw
CableType	20-pair shielded
ConnectorType	40-pin to 40-pin dual
InsulationResistance	≥100 MΩ at 500 V DC
WithstandVoltage	Compatible with standard DCS loop voltages

Channel-to-ChannelI solation Features

The KS1 series employs twisted-pair shielding to reduce crosstalk between adjacent signal pairs. Dual 40-pin connectors maintain physical separation of parallel channels, supporting low-noise data transmission within FOUNDATION Fieldbus and 4-20 mA HART loop architectures. Cold junction compensation (CJc) for temperature-sensitive signal lines is supported, maintaining signal integrity in varying thermal environments.

Frequently Asked Questions

Q: Does the KS1-10*B support hot-swap of connected modules?
A: The cable is passive and does not support active hot-swap; disconnection should occur with system power off to prevent signal disturbances.

Q: What is the recommended method to terminate shields?
A: Connect the cable shielding to ground at a single point near the controller or I/O module to minimize ground loop currents.

Q: Can the cable be routed in close proximity to high-current lines?
A: Maintain separation from high-current AC lines to avoid induced noise; if unavoidable, use additional shielded conduits.

Field Installation Guidelines

1. Route the KS1 cable away from sources of electromagnetic interference, including power transformers and variable-frequency drives.
2. Ensure that connector pins align precisely to prevent bent pins; do not force insertion.
3. Secure cable along trays or brackets to prevent mechanical strain on connectors.
4. Ground shielding at the DCS controller or I/O module end only; avoid multiple grounding points.
5. Avoid tight bending; maintain bend radius at least 10 times the cable diameter.
6. Label both ends clearly for signal pair identification during maintenance.

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