The Yokogawa SDV144-S63/PRP S4 is a high-reliability Digital Input Module specifically engineered for the ProSafe-RS Safety Instrumented System (SIS). This module is a vital component in safety-critical loops, designed to receive status signals from field devices such as emergency stop buttons, pressure switches, and flame detectors. The “S63” designation indicates it is a standard type with support for specific signal conditioning, while the “PRP” suffix denotes that it comes equipped with pressure-clamp terminals and conformal coating for enhanced environmental protection. As part of the S4 series, it features optimized hardware for the latest ProSafe-RS environments.
Technical Specifications
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Model Number: SDV144-S63/PRP S4
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Manufacturer: Yokogawa Electric Corporation
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System Series: ProSafe-RS Safety Instrumented System
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Number of Inputs: 16 Channels (Isolated)
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Input Voltage: 24 VDC (Nominal)
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Input Current: Approx. 4.1 mA (at 24 VDC)
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Isolation: Optocoupler isolation between field and system
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Response Time: Max 20 ms (Safety function response)
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Dimensions: 13.0 cm x 4.0 cm x 14.8 cm
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Weight: 0.42 kg
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Country of Origin: Japan
Applications
The SDV144-S63/PRP S4 is utilized globally in high-risk industrial sectors including upstream oil and gas, petrochemical refining, and nuclear power generation. It is the primary interface for Safety Integrity Level (SIL) rated functions, such as Emergency Shutdown Systems (ESD), Fire and Gas Systems (F&G), and Burner Management Systems (BMS). Its role is to ensure that critical digital inputs are monitored with the highest degree of diagnostic coverage to prevent hazardous incidents.
Operating Instructions
Before installation, verify that the module is compatible with the version of the Safety Control Station (SCS) currently in use. The SDV144 should be inserted into the I/O slot of the Safety Node Unit (SNU) while the unit is powered, as the ProSafe-RS hardware supports hot-swapping under controlled conditions. Use the pressure-clamp terminals to secure the field wiring; ensure that the wires are stripped to the correct length to maintain a gas-tight connection. Once the module is physically installed, it must be configured within the Centum VP or ProSafe-RS Engineering Station software. Perform a channel loop test to verify that the “ON/OFF” status in the software accurately reflects the state of the field instrument.
Frequently Asked Questions
Q: What does the “PRP” suffix mean for this module? A: The “PRP” indicates two specific features: the module is equipped with pressure-clamp terminals (P) for easier wiring, and it includes a G3-compliant conformal coating (RP) to protect the internal circuitry against corrosive gases and high humidity.
Q: Is this module suitable for SIL 3 applications? A: Yes, when used within a properly configured ProSafe-RS system and following the safety manual guidelines for redundancy and diagnostic intervals, the SDV144 is certified for use in SIL 3 safety loops.
Q: How can I identify a channel failure on the SDV144? A: The front panel features status LEDs. A “STATUS” LED indicates the overall health of the module, while individual channel LEDs indicate the signal state. If a hardware fault occurs, the module will communicate a diagnostic error code to the SCS, which can be viewed in the system alarm logs.
Recommended Similar Models
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Yokogawa SDV541-S63 (Digital Output Module)
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Yokogawa SDV144-S53 (Non-conformal Coated Version)
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Yokogawa SAI143-S63 (Analog Input Module)
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Yokogawa SED4D (Terminal Board for SDV144)
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Yokogawa SBD4D (Dual-Redundant Terminal Board)
