YOKOGAWA SDV144-S53/B4S00 Digital Input Module

Product Overview

The YOKOGAWA SDV144-S53/B4S00 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 S53 suffix configuration incorporates standard non-explosion protection, a pressure clamp terminal block connection interface, ISA Standard G3 corrosive gas resistance, and an extended operating temperature range of -20°C to +70°C. Furthermore, the /B4S00 option code supplies a dedicated pressure clamp terminal block for digital input (Model STB4S-00, without surge absorber), providing a complete and ready-to-install hardware solution.

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.

• Included Pressure Clamp Terminal: Supplied with an integrated pressure clamp terminal block (Model STB4S-00 without surge absorber) for secure, vibration-resistant field wire termination.

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

• Transmitter and Contact Compatibility: Designed to support no-voltage contact inputs and 2-wire transmitters with external 24 V DC power supply requirements.

• Compact and Lightweight Build: Designed with a space-saving width of 32.8 mm and an approximate weight of 0.38 kg, minimizing physical backplane stress inside control cabinets.

Functional Architecture

The SDV144-S53/B4S00 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

• 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-S53/B4S00
Module Type	Digital Input Module (16-channel, 24 V DC, module isolation)
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
Included Terminal Block	Pressure clamp terminal block for digital input without surge absorber (Model: STB4S-00)
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 120 mm
Weight	Approx. 0.38 kg

FAQ

Q1: What does the suffix code “-S53” and option code “/B4S00” indicate on this module?

A: The -S denotes the standard module type, 5 specifies a pressure clamp terminal block connection with no explosion protection, 3 indicates ISA Standard G3 corrosive resistance with an extended operating temperature of -20°C to +70°C, and /B4S00 specifies the included STB4S-00 pressure clamp terminal block without a surge absorber.

Q2: Does the included STB4S-00 terminal block contain a surge absorber?

A: No, the /B4S00 option code supplies the STB4S-00 terminal block, which is designed without a built-in surge absorber.

Q3: Can the SDV144-S53 module be used for dual-redundant configurations?

A: For dual-redundant setups, a specific dual-redundant option code (such as /B4D00) and matching redundant hardware configuration should be selected according to system requirements.

Q4: What is the input response time of the digital input channels?

A: The maximum input response time for the 16 channels is 40 milliseconds, providing rapid signal acquisition for safety shutdown logic.

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