YOKOGAWA SDV144-S63 Digital Input Module

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

• ProSafe-RS Safety Integration: Built explicitly for high-integrity safety instrumented systems, ensuring reliable signal processing in safety-critical control loops.

• 16-Channel Module Isolation: Features 16 independent input channels with module isolation, protecting system logic from field-side electrical disturbances.

• Dual-Redundancy Capability: Supports dual-redundant hardware configurations to maximize system availability and fault tolerance in high-stakes safety applications.

• Environmental Hardening: Manufactured with built-in ISA Standard G3 compliance and wide temperature tolerance (-20°C to +70°C) for rigorous plant environments.

• Flexible Field Termination: Compatible with standard pressure clamp terminal blocks, MIL cables, and dedicated signal cables (such as AKB331) for streamlined wiring installations.

• 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:

• Oil & Gas Upstream & Downstream: Emergency shutdown systems (ESD), fire & gas monitoring, and offshore platform safety loops.

• Petrochemical & Chemical Plants: High-integrity digital interlock and safety instrumented protection systems.

• Power Generation Facilities: Boiler safety interlocks, turbine protection, and critical trip logic networks.

• 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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