Yokogawa ATA4D-00 S2 CENTUM VP Terminal Block

Product Overview

The Yokogawa ATA4D-00 S2 functions as a high-integrity interface for analog signal distribution within the CENTUM VP Distributed Control System (DCS). This dual-redundant terminal block facilitates the connection between field instruments and 16-channel analog input modules. By utilizing a robust pressure clamp mechanism, the ATA4D-00 S2 ensures stable electrical contact and signal purity for mission-critical process loops. We supply this unit in 100% Brand New and Original condition, direct from the factory to guarantee long-term operational stability.

Technical Specifications

The ATA4D-00 S2 meets the following industrial parameters for high-density marshalling:

• Product Type: Dual-Redundant Pressure Clamp Terminal Block

• Capacity: Supports 16 Analog Input Channels

• Connection Method: Pressure Clamp (Screwless design for vibration resistance)

• Redundancy: Supports dual-redundant I/O module configurations

• Dimensions: 12.7 cm x 7.2 cm x 6.5 cm

• Weight: 0.3 kg

• Compatibility: Optimized for Yokogawa AAI141 and AAI143 Analog Input Modules

Engineering Advantages

• Secure Signal Integrity via Dual Redundancy: The ATA4D-00 S2 features a dual-path architecture that supports redundant I/O module pairings. This design allows the system to maintain continuous signal acquisition even if one module fails or requires maintenance, preventing costly process shutdowns.

• Vibration-Proof Pressure Clamp Design: Unlike traditional screw terminals that loosen over time, the pressure clamp mechanism maintains constant tension on the wire. This technical advantage solves the common industrial pain point of intermittent signal loss in high-vibration environments, such as compressor sheds or turbine halls.

• Simplified High-Density Installation: The compact footprint (12.7 cm length) allows for high-density mounting on DIN rails or terminal boards. This facilitates cleaner cabinet management and reduces the total required surface area for marshalling 16-channel analog signals.

• Rapid Maintenance and Wiring: The "S2" revision optimizes the terminal layout for fast cable entry. Engineers significantly reduce commissioning time by utilizing the spring-tension clamps, which eliminate the need for torque-specific tightening and reduce the risk of stripping screw threads.

FAQs

• What is the primary difference between the ATA4D and standard terminal blocks?

  The ATA4D-00 S2 specifically supports dual-redundant configurations. It routes field signals to two separate I/O modules simultaneously, whereas standard blocks typically interface with only a single module.

• Does this terminal block require special tools for wiring?

  No. You only need a standard flat-head screwdriver to actuate the pressure clamps. This design speeds up the wiring process and ensures a gas-tight connection without the risk of over-tightening.

• Is the ATA4D-00 S2 compatible with HART-enabled modules?

  Yes. This terminal block maintains signal transparency for digital HART communication superimposed on the 4-20 mA analog signal when paired with HART-compatible I/O modules like the AAI143-H.

• Can I replace a damaged S1 revision with this S2 model?

  Yes. The S2 is the current functional successor. It maintains backwards compatibility with existing Yokogawa KS cables and analog input modules while offering improved mechanical housing durability.