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Yokogawa SEC401-11 Safety Bus Coupler Module
- Product Introduction: It is a safety bus coupler module for Yokogawa’s ProSafe – RS safety instrumented system. It is used to connect the safety field bus (ESB) and the safety I/O module, realize the data transmission between the safety controller and the field safety instrument, and meet the safety communication requirements of SIL 2/SIL 3 systems.
- Technical Specifications:
- Safety bus: ESB bus, communication speed 1 Mbps.
- Number of connected modules: Up to 32 safety I/O modules can be connected.
- Working voltage: 24V DC, current consumption ≤ 600mA.
- Isolation: 2kV AC between the bus and the system for 1 minute.
Detailed content
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- Working temperature: -20~70°C.
- Protection level: IP20 (module) and IP65 (with protective cover).
- Functional Characteristics:
- Safety communication: Supports the transmission of safety – related data, with data encryption and integrity verification functions.
- Redundant design: Supports dual – bus redundancy, ensuring the continuity of data transmission when a single bus fails.
- Hot – swap support: Safety I/O modules can be replaced online without affecting the operation of the safety system.
- Fault diagnosis: It can monitor the connection status of the bus and the module in real time, and quickly locate the fault point.
- Application Scenarios: It is widely used in the safety instrumented systems of petroleum chemical, chemical, pharmaceutical and other industries. It is used to build the safety field bus network, connect the safety I/O module and the safety controller, and provide a reliable communication link for the safety interlock control of the production process.
