Overview

The Yokogawa STB4S-10 is a pressure clamp terminal block module designed for digital input signal interfacing in distributed control systems (DCS). Despite some listings referring to it as a digital output module, its primary function is as a digital input terminal block, making it an essential component for standard industrial applications where redundancy and internal surge protection are not required.

Part of Yokogawa’s STB series, the STB4S-10 is known for its compact design and ease of integration into rack-mounted control panels. It supports non-redundant digital input connections, making it ideal for systems where space efficiency and simple wiring are prioritized. Manufactured in Japan and CE-certified, it is engineered for high reliability and performance in demanding industrial environments.

Technical Data

Typical Applications

• Distributed Control Systems (DCS): Interfaces digital input signals from field devices like switches, sensors, and relays.

• Process Automation: Commonly used in chemical, pharmaceutical, and water treatment plants for reliable signal acquisition.

• Power Generation: Suitable for turbine and generator monitoring systems where control panel integration is needed.

• Factory Automation: Connects digital inputs from machinery, safety interlocks, and automated systems.

• Marine and Offshore Systems: Provides compact input interfacing in shipboard and offshore control panels, particularly where space is limited.

For example, in a water treatment facility, the STB4S-10 can be used to receive signals from level switches or flow sensors and transmit them to the central control system for process monitoring, ensuring system reliability and operational efficiency.

FAQ

Q1: Is the STB4S-10 a digital input or output module?
It is primarily a digital input terminal block, despite some listings referring to it as an output module.

Q2: Does it support redundant connections?
No, it supports single-channel, non-redundant digital input connections only.

Q3: Is internal surge protection included?
No, the STB4S-10 does not have internal surge protection. External surge protection may be required in environments with high electrical noise.

Q4: What type of terminals does it use?
It uses pressure clamp terminals, making it easy to secure and wire field devices.

Q5: What industries use this module?
It is used across industries like process automation, power generation, marine, and factory control systems.