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YOKOGAWA SDV144-S63 Digital Input Module
SDV144-S63
The YOKOGAWA SDV144-S63 is a 16-channel digital input module designed for contact signal acquisition in ProSafe-RS safety instrumented systems. It features module isolation, ISA Standard G3 corrosive gas resistance, and extended operating temperature tolerance for critical industrial safety applications.
Product Overview
The YOKOGAWA SDV144-S63 is an advanced 16-channel Digital Input Module engineered specifically for Yokogawa’s ProSafe-RS safety instrumented system architecture. Designed to accept contact signals from field devices, this module acts as a critical interface node in safety control and emergency shutdown (ESD) loops. The -S63 model configuration incorporates standard non-explosion protection with an integrated signal cable interface adapter, along with ISA Standard G3 corrosive gas resistance and an extended operating temperature range of -20°C to +70°C, ensuring exceptional durability in harsh industrial atmospheres.
Key Features & Highlights
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ProSafe-RS Safety Integration: Built explicitly for high-integrity safety instrumented systems, ensuring reliable signal processing in safety-critical control loops.
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16-Channel Module Isolation: Features 16 independent input channels with module isolation, protecting system logic from field-side electrical disturbances.
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Dual-Redundancy Capability: Supports dual-redundant hardware configurations to maximize system availability and fault tolerance in high-stakes safety applications.
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Environmental Hardening: Manufactured with built-in ISA Standard G3 compliance and wide temperature tolerance (-20°C to +70°C) for rigorous plant environments.
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Flexible Field Termination: Compatible with standard pressure clamp terminal blocks, MIL cables, and dedicated signal cables (such as AKB331) for streamlined wiring installations.
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Compact and Lightweight Build: Designed with a space-saving width of 32.8 mm and an approximate weight of 0.41 kg (with signal cable interface adapter), minimizing backplane stress.
Functional Architecture
The SDV144-S63 operates on a 24 V DC external power supply with a 6 mA input current specification. It supports no-voltage contact inputs (ON state at 1 kilo-ohm maximum, OFF state at 100 kilo-ohms minimum) with a rapid maximum response time of 40 ms. Built-in withstand voltage protection (2 kV AC between input signal and system) ensures stable operation under fluctuating industrial electrical conditions.
Application
The YOKOGAWA SDV144-S63 digital input module is widely deployed across critical safety and process control networks in industries such as:
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Oil & Gas Upstream & Downstream: Emergency shutdown systems (ESD), fire & gas monitoring, and offshore platform safety loops.
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Petrochemical & Chemical Plants: High-integrity digital interlock and safety instrumented protection systems.
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Power Generation Facilities: Boiler safety interlocks, turbine protection, and critical trip logic networks.
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Water & Wastewater Management: Critical digital alarm monitoring and automated safety shutdown infrastructure.
Technical Specifications
| Item / Feature | Specification Details |
| Model & Suffix Code | SDV144-S63 (16-Channel Digital Input Module) |
| Number of Inputs | 16 channels, module isolation |
| Input Signal Type | No-voltage contact (ON: 1 kilo-ohm max, OFF: 100 kilo-ohms min) |
| Input Current | 6 mA +/- 20% (External power supply, 24 V DC at 0 ohm input) |
| Contact Rating | 24 V DC +20% / -10%, 10 mA or greater |
| External Power Supply | 24 V DC +20% / -10% (Current capacity: 200 mA) |
| Input Response Time | 40 ms maximum |
| Withstand Voltage | 2 kV AC between input signal and system for 1 minute |
| Environmental Protection | ISA Standard G3 compliant |
| Operating Temperature | -20°C to +70°C |
| Current Consumption | 290 mA maximum (5 V DC), 140 mA maximum (24 V DC) |
| Dimensions (W x H x D) | Approx. 32.8 mm x 130 mm x 124 mm (With signal cable interface adapter) |
| Weight | Approx. 0.41 kg (With signal cable interface adapter) |
| External Connection | Signal cable interface adapter (MIL connector / Dedicated signal cable) |
FAQ
Q1: What does the suffix code “-S63” indicate on the SDV144 module?
A: The -S denotes the standard module type, 6 indicates the inclusion of a signal cable interface adapter with no explosion protection, and 3 specifies ISA Standard G3 corrosive resistance with an extended operating temperature range of -20°C to +70°C.
Q2: Can the SDV144-S63 module be configured for dual-redundant operation?
A: Yes, the SDV144 input module can be configured in a dual-redundant setup by pairing two matching modules to enhance system availability and fault tolerance.
Q3: What types of field wiring connections are supported by this module?
A: The SDV144-S63 supports signal cable interface adapters for MIL cables and dedicated signal cables such as the AKB331, as well as pressure clamp terminal blocks depending on hardware selection.
Q4: What is the response time of the digital input signals?
A: The input response time of the SDV144-S63 is 40 milliseconds maximum, ensuring rapid signal acquisition for safety shutdown logic.
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