Description
Product Overview
The Yokogawa SDV144-S63-S4 is a 16-channel module-isolated digital input module built for the ProSafe-RS safety instrumented system (SIS). It receives dry / no-voltage contact status signals from field safety devices including emergency stop pushbuttons, pressure switches, flame detectors, valve limit switches and fire & gas sensors, and transmits discrete status data to the ProSafe-RS safety controller. The module adopts dual CPU safety architecture, with built-in periodic diagnostic testing of input circuits to detect stuck faults and maintain safety integrity. The suffix S63-S4 defines standard construction, fitted signal cable adapter, non-explosion-proof design and ISA G3 conformal coating for corrosive plant environments. It supports hot-swapping and is widely stocked as drop-in replacement spare for ESD, burner management and fire & gas safety racks in petrochemical, oil & gas, chemical and power generation facilities.
Technical Specifications
| Parameter | Details |
|---|---|
| Part Number | SDV144-S63-S4 |
| Manufacturer | Yokogawa Electric Corporation (Japan) |
| Product Category | Digital Input Module (SIS) |
| Platform | ProSafe-RS Safety Instrumented System |
| Channel Count | 16 channels, module-level galvanic isolation |
| Input Type | No-voltage dry contact |
| Contact ON resistance | ≤1 kΩ |
| Contact OFF resistance | ≥100 kΩ |
| Input Current | 6mA ±20% at 24VDC external supply, 0Ω contact |
| External Field Power | 24VDC (range: 21.6 ~ 28.8VDC), max 200mA |
| Response Time | Max 40ms |
| Dielectric Withstand | 2000VAC between field side and system backplane |
| Backplane Power | 5VDC max 290mA; 24VDC max140mA |
| Diagnostics | Periodic input circuit test, module self-diagnosis, fault reporting |
| Environmental Rating | ISA G3, PCB conformal coating |
| Operating Temperature | -20°C ~ +70°C |
| Storage Temperature | -40°C ~ +85°C |
| Relative Humidity | 5% ~ 95% non-condensing |
| Feature | Hot-swappable |
| Wiring Interface | Works with AKB331 dedicated signal cable assembly |
| Approximate Weight | 0.41 kg |
Compliance & Certifications
- TÜV certification IEC 61508 SIL3 capable for safety function
- CE mark for EMC and Low Voltage Directive
- RoHS compliant
- Factory full functional and safety diagnostic testing before shipment
Storage & Installation Guidelines
Storage Requirements
- Store in dry temperature-controlled warehouse; recommended ambient 10°C ~30°C, RH <70% non-condensing
- Remain sealed inside original anti-static packaging before installation
- Protect from mechanical shock, continuous vibration, dust and corrosive vapors
- ESD wristband required when unpacking and handling PCB components
Installation Instructions
- Follow site lock-out/tag-out safety procedures; hot swap is supported, but isolate field safety contacts for high-risk safety loops
- Wear ESD protective gear to prevent electrostatic circuit damage
- Insert module into the designated ProSafe-RS rack slot and latch securely onto backplane
- Connect Yokogawa AKB331 dedicated signal cable between SDV144-S63-S4 and field terminal assembly
- Terminate dry contact field device wiring following Yokogawa ProSafe-RS wiring schematics
- Verify contact continuity and wiring insulation for each safety input channel
- Restore rack power, download safety logic configuration and run full channel diagnostic test
- Perform safety loop proof test; commissioning must be completed by certified SIS safety technicians
FAQ
Q: What system is SDV144-S63-S4 designed for? A: It belongs to Yokogawa ProSafe-RS safety instrumented system for ESD, fire & gas and burner management safety control.
Q: What does suffix S63-S4 represent? A: S = standard model; 6 = fitted signal cable adapter, non-explosion-proof; 3 = ISA G3 environment rating; S4 = hardware revision variant.
Q: Are inputs channel-to-channel isolated? A: This module provides module-level isolation, not individual channel galvanic isolation.
Q: Does this module support hot swap? A: Yes, hot swapping is supported without shutting down the entire safety rack.
Q: What safety level can this module achieve? A: TÜV certified for IEC61508 SIL3 capable safety functions when deployed in approved ProSafe-RS configuration.
Q: What warranty is available? A: Standard 12-month warranty applies for fully tested modules operated under rated normal operating service conditions.
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