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Yokogawa SNT501-53 Safety Network Terminal Module
- Product Introduction: It is a safety – related network terminal module belonging to Yokogawa’s ProSafe – RS safety instrumented system. It is mainly used to realize the data interaction between the safety control station and the field safety instrument, ensuring the real – time and reliability of safety information transmission, and meeting the strict safety requirements of industrial processes.
- Technical Specifications:
- Safety integrity level: SIL 2, in line with IEC 61508 and IEC 61511 standards.
- Communication protocol: Supports ESB safety bus, communication speed 1 Mbps.
- Number of channels: 16 safety – related signal channels (input/output configurable).
Detailed content
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- Working voltage: 24V DC, current consumption ≤ 500mA.
- Working temperature: -20~70°C, humidity 5% – 95% RH (no condensation).
- Isolation: 2kV AC between the safety bus and the system for 1 minute.
- Functional Characteristics:
- Safety communication: Supports the transmission of safety – related data, with data integrity check and error retransmission mechanisms.
- Redundant design: Provides dual – channel redundant communication, and automatically switches to the standby channel when a fault occurs to ensure the continuity of safety information transmission.
- Online self – diagnosis: It can monitor the module status and communication link in real time, and send an alarm in time when a fault is found, which is convenient for quick troubleshooting.
- High compatibility: It can be seamlessly integrated with Yokogawa’s ProSafe – RS safety controller to realize the configuration and management of safety logic.
- Application Scenarios: It is used in the safety instrumented systems of petroleum, chemical, pharmaceutical and other industries. It is applied to the safety interlock links such as emergency shutdown of the production process, fire and gas alarm, and over – limit protection of key parameters, ensuring the safety of personnel and equipment in the production site.
