The YOKOGAWA KS1-20*A is a high-density, multi-pair signal cable designed specifically for connecting Yokogawa field terminal boards to I/O modules within CENTUM and ProSafe-RS control systems. It is engineered to maintain signal integrity for both analog and digital I/O in demanding industrial automation environments.

Hardware Specifications

Signal Integrity and Environmental Protection

The KS1-20*A utilizes a 20-pair shielded construction, which is essential for minimizing electromagnetic interference (EMI) and crosstalk in high-density signal environments. The shielding provides a robust barrier against external noise sources commonly found in plant cabinets, ensuring that control loops and sensor data remain accurate. The cable is designed for flexibility and durability, allowing it to withstand the thermal and physical stresses typical of long-term industrial operations.

Frequently Asked Questions

Q: Can I use the KS1-20A for custom lengths outside of the standard options? A: The KS1-20A is manufactured in fixed lengths (1m through 20m) to ensure the electrical characteristics, such as impedance and resistance, remain consistent. Modifying these cables is not recommended as it may compromise signal integrity and system-certified performance.

Q: What is the primary purpose of the 40-pin connector configuration?

A: The 40-pin connector is designed to match the high-density terminal boards used in Yokogawa’s distributed control systems, allowing for a "plug-and-play" connection that significantly reduces field wiring time and potential human error during installation.

Field Installation Guidelines

1. Route the cable through dedicated signal cable trays. Maintain physical separation from high-voltage power cables (at least 300mm recommended) to prevent induced noise.
2. Ensure the cable maintains a minimum bend radius during installation to prevent damage to the internal pairs and shielding.
3. Align the 40-pin connectors carefully with the module/terminal board interface. Ensure the locking clips are fully engaged to provide a secure, vibration-resistant connection.
4. If grounding is required for the cable shield, ensure it is terminated at the cabinet’s common signal ground point to provide an effective path for induced noise.
5. Inspect the connectors for debris or bent pins before insertion, especially in environments where the cable may be frequently moved or replaced.