Product Description
The Yokogawa SDV144-S33/PRP is a high-capacity digital output module engineered for distributed control and safety-critical systems based on CENTUM VP and ProSafe-RS architectures. Designed for installations that demand dense output points and uninterrupted network availability, this module integrates fast-response transistor outputs with PRP network redundancy.
Each module delivers 64 individually isolated DC outputs, optimized for long service life and reliable switching under continuous industrial operation. The S33 configuration denotes a specific hardware and firmware combination within the SDV144 series, ensuring compatibility with Yokogawa FIO subsystems and redundant system layouts.
The built-in PRP (Parallel Redundancy Protocol) functionality allows simultaneous communication over dual Ethernet networks, maintaining deterministic control even during network path failures.
Key Functional Characteristics
The SDV144-S33/PRP supports high-speed discrete signal actuation for large I/O installations. Output circuits are transistor-based, eliminating mechanical wear and enabling consistent performance in high-cycle applications.
Integrated diagnostics continuously monitor output states, internal power conditions, and module integrity. Faults are reported to the control system in real time, simplifying maintenance and reducing troubleshooting time during plant operation.
The module is designed for hot replacement when installed in redundant configurations, minimizing process disruption during service activities.
Electrical Specifications
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Nominal output voltage: 24 V DC
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Output type: Transistor (electronic switching)
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Maximum load current: up to 100 mA per channel
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Number of outputs: 64 isolated channels
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Protection features: short-circuit and overcurrent safeguarding
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Isolation: channel-to-channel and channel-to-system bus
System and Network Compatibility
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Control platforms: Yokogawa CENTUM VP, ProSafe-RS
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I/O architecture: Field I/O (FIO) subsystem
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Redundancy protocol: PRP compliant with IEC 62439-3
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Network behavior: zero-recovery-time failover
Environmental and Mechanical Data
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Operating temperature range: 0 °C to 55 °C
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Storage temperature range: −40 °C to 70 °C
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Relative humidity: 5–95%, non-condensing
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Cooling method: passive air convection
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Installation: FIO baseplate mounting
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Mechanical design: rugged industrial enclosure suitable for high-EMI environments
Typical Applications
The SDV144-S33/PRP is well suited for applications requiring a large number of reliable digital outputs within a compact footprint, including:
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Emergency shutdown and interlock systems
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Large-scale process plants
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Power generation and utility control
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High-availability manufacturing automation
FAQ
Q: Can this module be used in non-redundant systems?
A: Yes. While optimized for PRP-based redundant networks, the module can operate in standard configurations when redundancy is not required.
Q: Are relay outputs supported on this model?
A: No. The SDV144-S33/PRP uses transistor outputs only, providing faster switching and longer operational life compared to relay-based modules.
Q: Is field wiring isolated per channel?
A: Yes. Each output channel is electrically isolated to enhance noise immunity and system reliability.
