What is the model classification logic of the Yokogawa terminal block series?

Yokogawa CENTUM VP series terminal block

Product Core Overview

Product type: Pressure Clamp Terminal Block

Core function: As an intermediate connecting component, it realizes the circuit connection between I/O modules with built-in barriers and field devices, ensuring the stability of signal transmission

Compliance standard: Compliant with ISA S71.04 class G3 standard, meeting the safety and performance requirements of industrial scenarios

Environmental adaptation temperature: -20 ℃ to 70 ℃, can adapt to the temperature environment of most industrial sites

Model classification and core specifications

（1） Overview of Model System

Terminal blocks are divided into single channel series (suffix S) and dual redundancy series (suffix D), both of which include 6 models corresponding to different I/O types; The suffix code for all models is fixed at -0, with no other optional suffixes.

（2） Detailed specification comparison table

Model Application Type Channel Number Adaptation Module Name Weight Series Type

ATSA3S Analog Input (Single) 8-Point ASI133 0.2 kg Single Channel Series

ATSA3D Analog Input (Dual Redundant) 8-Point ASI133 0.3 kg Dual Redundancy Series

ATSS3S Analog Output (Single) 8-Point ASI533 0.2 kg Single Channel Series

ATSS3D Analog Output (Dual Redundancy) 8-Point ASI533 0.3 kg Dual Redundancy Series

ATST4S thermocouple/mV (Single) 16 Point AST143 0.2 kg single channel series

ATST4D thermocouple/mV (Dual Redundant) 16 Point AST143 0.3 kg dual redundant series

ATSR3S RTD/BOT (Single) 8-Point ASR 133 0.2 kg Single Channel Series

ATSR3D RTD/BOT (Dual Redundancy) 8-Point ASR 133 0.3 kg Dual Redundancy Series

ATSB4S Digital Input (Single) 16 Point ASD143 0.2 kg Single Channel Series

ATSB4D Dual Redundant 16 Point ASD143 0.3 kg Dual Redundancy Series

ATSD3S Digital Output (Single) 8-Point ASD533 0.2 kg Single Channel Series

ATSD3D Dual Redundant 8-Point ASD533 0.3 kg Dual Redundancy Series

（3） Core specification description

Channel difference:

8-channel model: covering analog input/output RTD/POT、 Digital outputs, totaling 8 types (4 single channel+4 dual redundant)

16 channel model: only suitable for thermocouple/mV, digital input, a total of 4 types (2 single channel+2 dual redundant)

Weight rule: The single channel series (S suffix) is uniformly 0.2kg, and the double redundant series (D suffix) is uniformly 0.3kg. The weight difference is caused by additional hardware designed for redundancy

Adaptation module: Each terminal block model corresponds to a unique I/O module, which cannot be mixed across models to ensure connection compatibility

External dimensions and specifications

Series types include model size (length x width x height, unit: mm) as per reference drawings

Single channel series ATSA3S, ATSS3S, ATST4S, ATSR3S, ATSB4S, ATSD3S 32.6 × 60.5 × 114 F02E.ai

Dual redundancy series ATSA3D, ATSS3D, ATST4D, ATSR3D, ATSB4D, ATSD3D 65.6 × 72 × 114 F05E.ai

Ordering Information and Trademark Statement

（1） Ordering requirements

Users need to specify the model and suffix code clearly when placing an order. As the suffix code for all models is fixed at -0, the actual ordering core needs to confirm the specific model (such as ATSA3S-0, ATST4D-0, etc.).

（2） Trademark Declaration

CENTUM "is a registered trademark of Yokogawa Electric Corporation

The other enterprise names and product names mentioned in the document are registered trademarks or trademarks of their respective owners

The document content is protected by copyright, and Yokogawa Electric reserves the right to change product specifications and document content without prior notice

Key issues

Question 1: What is the model classification logic of Yokogawa's terminal block series, and what are the core differences between single channel and dual redundant series?

Answer: The model classification logic is based on "application type+number of channels+redundant design" as the core, with "S" as the suffix for single channel series and "D" as the suffix for dual redundant series. All model suffix codes are fixed at -0; The core differences include: ① Weight: 0.2kg for single channel, 0.3kg for dual redundancy; ② Size: 32.6 × 60.5 × 114mm for single channel, 65.6 × 72 × 114mm for dual redundancy; ③ Applicable scenarios: Single channel is suitable for conventional non redundant requirements, while dual redundancy is suitable for industrial scenarios with higher stability requirements.

Question 2: Which terminal block should be selected for a project that requires the connection of the ASI533 analog output module of the CENTUM VP system to field devices and requires dual redundancy design? What are the key parameters?

Answer: ATSS3D terminal block should be selected; Key parameters include: ① Application type: Analog output (dual redundancy); ② Number of channels: 8-Point; ③ Adaptation module: ASI533; ④ Weight: 0.3kg; ⑤ Size: 65.6 × 72 × 114mm; ⑥ Suffix code: -0.

Question 3: What are the compliance standards and temperature adaptation range of this series of terminal blocks? What additional documents should be referred to when installing intrinsic safety circuits?

Answer: The compliance standard is ISA S71.04 class G3, with a temperature adaptation range of -20 ℃ to 70 ℃; If installing intrinsic safety circuits, additional reference should be made to "Explosion Protection" (document number TI 33Q01J30-01E) and "Explosion Protection of FIO Products" (document number IM 33Y06K01-90E) (for CENELEC certification scenarios).