Product Core Brief

• Model: KS1-25
• Brand: YOKOGAWA
• Series: KS Series Signal Cable
• Core Function: 25-meter signal cable used to interconnect Yokogawa controllers, manual stations, or related instrument units.
• Product Type: Instrument Signal Cable
• Key Specs: 25 m cable length | 40-pin to 40-pin connection | Compatible with Yokogawa YS-series and related instruments
• Condition: New Original / New Surplus

Key Technical Specifications

• Product type: Signal cable for Yokogawa instruments
• Model code:
• Cable length: 25 m
• Connector type: 40-pin to 40-pin
• Series compatibility: Yokogawa KS-series signal cable family
• Typical applications: Controller-to-manual-station connection, controller interconnection, instrument signal extension
• Operating environment: Industrial instrument wiring; confirm exact temperature range against the cable datasheet
• Handling: Protect connectors from bending, contamination, and moisture

Note: The KS1 family includes multiple length codes such as KS1-01 through KS1-50, and some variants carry style or certification suffixes such as *B or /NL. Exact electrical ratings, pin assignment, and compatible instrument models should be confirmed against the official Yokogawa cable or controller manual.

 

Product Introduction

The KS1-25 is a 25-meter signal cable from the Yokogawa KS series. It is typically used as an interconnect cable between Yokogawa controllers, standby manual stations, or related instrument modules. The 40-pin to 40-pin design makes it suitable for applications where a reliable, pre-wired signal link is needed without custom cable fabrication.

For maintenance teams, this cable is important because a damaged or incorrectly routed interconnect can cause communication loss, mode switching failures, or manual backup issues. Keeping a verified KS1-25 on hand helps restore controller connections quickly during instrument upgrades, panel rewiring, or troubleshooting.

QA & Inspection SOP

Each cable is inspected before release:

1. Label and length verification: Confirm the cable is marked KS1-25 and matches the 25-meter specification.
2. Connector inspection: Check both 40-pin connectors for bent pins, corrosion, or loose shells.
3. Cable jacket check: Inspect the outer sheath for cuts, crushing, kinks, or abrasion.
4. Continuity check: Verify pin-to-pin continuity to rule out open circuits or cross-wiring.
5. Insulation check: Check for short circuits between adjacent pins and between pins and shield or outer jacket.
6. Packaging: Coil and pack to avoid connector stress, with end caps if available.

Full system validation requires connection to the intended Yokogawa controller or manual station. If a loop test is required, confirm the instrument models and cable routing before dispatch.

 

Installation Pitfalls & Guide

❗ Confirm the connector type before installation. The KS1-25 is a 40-pin to 40-pin cable. It may not fit instruments that use different connector formats or smaller I/O ports.

❗ Do not assume compatibility across all Yokogawa models. KS-series cables are commonly used with YS-series controllers and related units, but the exact compatible models should be checked against the controller or manual station manual.

❗ Avoid sharp bends and tension on the connectors. A 25-meter cable can be heavy; support it properly in the panel or cable tray to prevent stress on the pins.

❗ Route away from high-power cables. Keep signal cables separated from motor leads, VFD outputs, and high-current wiring to reduce noise interference.

Installation steps:

1. Pre-install: Identify the source and destination instruments, confirm model compatibility, and power down if required.
2. Disconnect: Remove the existing cable and label both ends if replacing in a live panel.
3. Install: Connect the KS1-25 firmly, ensuring the locking mechanism is engaged on both ends.
4. Verify: Restore power, check communication status, and confirm normal controller or manual station operation.

Technical FAQ

Is KS1-25 the same as KS1-25*B?
The KS1-25 identifies the 25-meter cable length. Suffixes such as *B or /NL may indicate connector style, certification, or regional specification. For replacement work, always match the full part number shown on the original cable or in the instrument manual.

Can this cable be used with YS1500 or YS1700 controllers?
KS-series cables are commonly associated with Yokogawa YS-series controllers and standby manual stations, but compatibility depends on the specific instrument and connector type. Confirm against the official Yokogawa documentation before installation.

What should I check if communication fails after replacement?
Verify that both connectors are fully seated, the pin configuration matches, the cable length is correct, and the instrument mode settings are unchanged. If the issue persists, test with a known-good cable to isolate the fault.

Is this cable still available?
KS-series signal cables are commonly available through industrial spare channels, but availability depends on length code and suffix. Confirm stock condition and warranty terms before ordering.

Do you offer warranty on surplus cables?
Surplus and new-original cables are typically covered by a limited functional warranty. Exact terms depend on stock source, so confirm warranty length and return conditions before purchase.