Digital guide
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Yokogawa SDV5‑SS3
- Product Name: SDV Series Safety Relay Module / Digital Input Safety Module
- Product Series: SDV5 Series Safety‑Related I/O Modules
- Product Brief: Safety‑certified digital input module designed for industrial safety instrumented systems (SIS), SS3 denotes 3‑channel safety input configuration compliant with IEC 61508 safety standards.
Detailed content
- Technical Specifications:
- Channel Count: 3 safety‑isolated digital input channels
- Input Signal: Dry contact / 24 VDC digital input
- Safety Integrity Level: SIL 2 certified
- Power Supply: 24 VDC ±20%
- Isolation: Galvanic isolation per channel
- Functional Features: Safety signal acquisition, fault monitoring, cross‑channel diagnosis, short‑circuit/open‑circuit detection, safety relay output for emergency shutdown
- Performance Parameters: Operating temperature: −20–60 °C; Storage temperature: −40–85 °C; IP30 protection grade; safety response time ≤10 ms
- Material Composition: Housing: flame‑retardant polycarbonate; internal circuit: safety‑rated electronic components; terminals: tin‑plated copper alloy
- Structural Characteristics: DIN rail mount compact module; integrated safety relay circuit; fault indicator LED per channel
- Working Principle: Receive safety digital signals, execute cross‑monitoring and fault diagnosis, output safety relay signals for emergency shutdown and system interlock
- Advantage Highlights: SIL 2 safety certification, multi‑channel isolation, fast safety response, industrial anti‑interference design
- Applicable Industries: Petrochemical, oil & gas, power generation, chemical plants, safety instrumented systems, emergency shutdown systems
- Installation Requirements: Install in Class I Division 2 compliant control cabinet; 35 mm DIN rail mounting; proper grounding for safety compliance
- Usage Precautions: Use certified 24 VDC power supply; regularly test safety function; do not bypass safety interlock circuits
