Yokogawa SDV144-S63/PRP S4 16-Channel Digital Input Module 24V DC

Yokogawa SDV144-S63/PRP S4 Digital Input Module – Dual-Redundant Field Signal Acquisition

The Yokogawa SDV144-S63/PRP S4 is an industrial-grade 16-channel digital input module engineered for mission-critical process control applications within CENTUM VP and ProSafe-RS distributed control systems. Featuring dual-redundant architecture with false-insertion prevention, this module delivers reliable no-voltage contact signal acquisition from field devices across oil & gas, chemical processing, power generation, and manufacturing environments.

Core Technical Specifications

• Input Channels: 16 isolated no-voltage contact inputs
• Signal Detection: ON state ≤1kΩ | OFF state ≥100kΩ
• Input Current: 6mA ±20% at 24V DC nominal
• External Power: 24V DC (+20%/-10%), 200mA capacity required
• Response Time: ≤40ms maximum input-to-system propagation
• Isolation Voltage: 2kV AC withstand (1 minute test duration)
• Current Draw: 290mA max (5V DC) | 140mA max (24V DC)
• Operating Range: -20°C to +70°C with ISA G3 corrosion resistance
• Connection Options: Pressure clamp terminals, MIL connectors, or AKB331 signal cables
• Weight: 0.36kg (terminal block) | 0.41kg (with signal cable adapter)

Application-Driven Solutions

Safety Instrumented Systems (SIS): Deploy in ProSafe-RS configurations where dual-redundant input monitoring ensures SIL-rated emergency shutdown logic. The /PRP false-insertion prevention suffix guarantees correct module placement during hot-swap maintenance operations, eliminating configuration errors in safety-critical loops.

Discrete Device Monitoring: Interface directly with limit switches, proximity sensors, pushbutton stations, and relay contacts throughout process units. The module's 40ms response time supports rapid state-change detection for batch sequencing, interlock verification, and alarm condition monitoring without introducing control delays.

Valve Position Feedback: Capture open/closed status from motor-operated valves (MOVs) and pneumatic actuators in pipeline networks. Module isolation protects the DCS backplane from field-induced electrical transients during valve cycling operations, extending system MTBF in harsh industrial settings.

Rotating Equipment Protection: Integrate with vibration monitors, bearing temperature switches, and overspeed detectors on pumps, compressors, and turbines. The 24V DC external power architecture allows flexible field wiring without loading the DCS power budget, simplifying multi-cabinet installations.

Installation & Configuration Advantages

Hot-swappable design enables online module replacement without process interruption—critical for continuous manufacturing operations. The S63 suffix denotes signal cable interface compatibility with ISA G3 environmental protection, ideal for coastal refineries and chemical plants exposed to corrosive atmospheres. Field-configurable via Yokogawa engineering tools for custom debounce timing, diagnostic masking, and channel-specific alarm thresholds.

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Why Choose Industrial Control Hub?

We supply factory-certified Yokogawa automation components with global logistics support, technical pre-sales consultation, and post-delivery commissioning assistance. Every module ships with traceability documentation and undergoes functional verification before dispatch. Our engineering team provides wiring diagrams, configuration templates, and integration guidance for seamless DCS expansion projects.

Warranty & Support: Manufacturer-backed warranty with expedited RMA processing. Access to technical bulletins, firmware compatibility matrices, and 24/7 application engineering support.

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