YCB301-C600 YOKOGAWA Series Datasheet & Technical Manual

KS1-20*B YOKOGAWA CENTUM VP FIO Signal Cable Interface Terminal Block

KS1-20*B YOKOGAWA CENTUM VP FIO Signal Cable Interface Terminal Block

Availability: 99 left in stock

YOKOGAWA KS1-20*B Signal Cable Interface The YOKOGAWA KS1-20*B, also cataloged as the KS1*B Terminal Block, operates as a dedicated hardware...

SKU: KS1-20*B

Manufacturer: Yokogawa
Product No.: KS1-20*B
Product Type: Terminal Blocks
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 900g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

YOKOGAWA KS1-20*B Signal Cable Interface

The YOKOGAWA KS1-20*B, also cataloged as the KS1*B Terminal Block, operates as a dedicated hardware component for field wiring termination and signal routing within CENTUM VP and CS 3000 distributed control system platforms.

Hardware Specifications

Parameter	Specification
Model	KS1-20*B
Brand	YOKOGAWA
Origin	USA
Weight	0.9 kg
Dimensions	25.4 cm x 5.1 cm x 38.1 cm
Operating Temp	Standard cabinet environment
Power Consumption	Passive (Loop powered)
Channel Capacity	20 channels
Rated Voltage	24 V DC
Isolation	2 kV AC withstand

4-20 mA HART Loop Protocol and Channel-to-Channel Isolation

The KS1-20*B serves as the physical interface layer for Yokogawa FIO modules, facilitating the transition from high-density system cabling to localized field wiring. To ensure high measurement fidelity, the adapter maintains rigorous channel-to-channel isolation. This configuration is required to prevent cross-interference between signal loops, specifically when integrating 4-20 mA HART loop protocol instrumentation. The termination block design minimizes impedance discontinuities, allowing for stable transmission between the field sensors and the I/O module backplane. Furthermore, the architecture supports consistent cold junction compensation (CJC) pathing when paired with thermocouple-capable input modules, maintaining the deterministic nature of the DCS data acquisition cycle.

Frequently Asked Questions

Q: Can the KS1-20*B terminal block be used with modules requiring higher than 0.5 A per channel?

A: No, the terminal block is rated for a maximum of 0.5 A per channel. Exceeding this current limit will cause excessive heating of the brass screw terminals and may result in permanent damage to the interface block or increased contact resistance.

Q: How do I ensure proper grounding when connecting the KS1-20*B to field devices?

A: You must terminate the cable shields at the designated chassis ground point provided on the rack-mounting assembly. Do not daisy-chain shields between channels, as this bypasses the channel-to-channel isolation and introduces common-mode noise.

Field Installation Guidelines

De-energize the associated I/O module and the field loop power supply before performing any wiring modifications.
Inspect the screw-type terminals for any metallic debris or thread damage prior to inserting field wires.
Strip the insulation from the field wires to the minimum length required to achieve full contact within the terminal clamp, preventing exposed copper.
Torque the M3/M4 terminal screws to the manufacturer's specified values to ensure a gas-tight electrical connection, which mitigates long-term corrosion.
Verify point-to-point continuity from the field terminal to the DCS controller input after termination to confirm mapping integrity.

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