Description
The Yokogawa KS1-02 is a 2-meter, 40-pin to 40-pin signal cable in the Yokogawa KS cable family, built to connect FIO (Field I/O) modules to matching terminal boards in CENTUM VP distributed control systems and ProSafe-RS safety systems. It is not a general-purpose jumper: the KS1-02 is a system-defined cable whose connector pinning, conductor grouping and construction match a specific set of Yokogawa I/O modules and termination boards. That matching matters in process automation, because it preserves signal integrity from field wiring all the way to the I/O module without improvised pin mapping or hand-built interfaces.
Application Scenarios
A refinery revamp team was rebuilding the marshalling and I/O termination area for a crude unit. The original installation had grown over two decades: several analog input groups had been repointed, two I/O modules had been replaced during maintenance, and the termination hardware was a mix of pressure-clamp terminals and legacy terminal boards. During loop checking, technicians found more than one mismatch between the field-side label and the actual I/O channel assignment. Rather than untangle each point individually, the project standardized on the documented KS1-02 cable for every connection that required the specified 40-pin module-to-board combination. Because the KS1-02 is a fixed, factory-built assembly, the channel mapping became consistent across all panels, and installation time for each I/O group fell sharply. The team also adopted a simple rule — keep one spare KS1-02 per panel — which paid off within the first year when a cabinet modification needed a relocated terminal board.
The same discipline applies in safety systems. In a ProSafe-RS installation, an SAI143 analog input module connects to its designated terminal arrangement using a KS-series cable; using an unspecified or incorrectly pinned cable would create uncertainty at the exact boundary where sensor data enters the safety logic. By specifying the correct KS1-02 (with the required Style B and any applicable option code), engineering and maintenance teams remove that uncertainty and create a verifiable, repeatable wiring standard.
Parameter
| Main Parameters | Value/Description |
|---|---|
| Product Model | |
| Manufacturer | Yokogawa Electric Corporation |
| Product Category | KS-series signal cable assembly |
| Connector Type | 40-pin to 40-pin (40-40 pins), system-defined connector arrangement |
| Cable Length | 2 meters; tolerance +5 % / −0 % for lengths up to 3000 mm |
| Style Code | *B — Style B |
| Option Code | /NL — supports CSA Non-Incendive instrumentation where specified |
| Typical Application | Connection between FIO modules and terminal boards or terminal blocks |
| Compatible Terminal Boards | AEA3D, AEA4D, AAT145 and related terminal-board configurations |
| Compatible Modules | AAI135, AAI141, AAI143, AAI543, AAI835, AAP135, AAB841, AAV141, AAV142, AAV144, AAV542, AAV544, AAT145, SAI143, SAI533, SAV144 and other modules per the approved combination tables |
| Connection Adapter | Used with the ATK4A KS cable interface adapter for certain module/board combinations |
| Cable Family | KS1 (1/2/3/5/7/10 m, 15–50 m options); -10 denotes “up to 10 m” by customer specification |
| Operating Temperature | −20 to +70 °C |
| Construction | Industrial-grade multi-conductor signal-cable assembly with 40-pin connectors |
| Insulation Environment | Suitable for indoor control-room and cabinet signal wiring |
| Weight | Approx. 0.3–3 kg depending on packing and vendor listing; verify before freight planning |
| Conformance | Matches Yokogawa General Specification GS 33J60J10-01EN and related CENTUM VP / ProSafe-RS cable specifications |
