Digital guide
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Yokogawa SDV531‑L23‑S4
- Product Name: Digital Output Module (Safety‑grade Isolated Output Module)
- Product Series: SDV Series Safety‑related Digital I/O Modules
- Technical Specifications:
- Channel Configuration: L23 multi‑channel digital output layout
- Safety Grade: S4 high‑safety industrial output grade
Detailed content
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- Output Type: Isolated transistor/relay digital output
- Isolation: Galvanic isolation per output channel
- Functional Features: Safety‑grade digital signal output, fault detection, short‑circuit protection, over‑current protection
- Performance Parameters: Output switching speed ≤1 ms, isolation voltage 2500 V AC, over‑current protection trigger point 1.2× rated current
- Material Composition: Safety‑certified flame‑retardant PCB, sealed isolation components, anti‑surge circuit protection
- Structural Characteristics: Plug‑in rack‑mount modular design, channel‑independent protection structure
- Working Principle: Receive control signals from CPU module, convert to isolated digital output signals, drive field safety‑related actuators with fault self‑protection
- Advantages & Highlights: S4 high safety certification, independent channel protection, strong anti‑surge capability, fault self‑diagnosis
- Applicable Industries: Safety interlock systems, emergency shutdown systems, petrochemical safety control, power plant protection
- Installation Requirements: Mount in safety‑classified control cabinet; separate safety‑grade wiring from ordinary signal wiring
- Usage Precautions: Do not connect non‑safety‑grade loads; inspect channel protection circuits periodically
