ATA4S-10 Analog Input Block with Integrated Surge Protection

Product Overview

The Yokogawa ATA4S-10 serves as a critical interface component for high-density analog signal acquisition in Distributed Control Systems (DCS) and Programmable Logic Controllers (PLC). This 16-channel terminal block facilitates the connection between field instruments—such as pressure transmitters and flowmeters—and the control system. By employing a specialized pressure clamp mechanism, the ATA4S-10 eliminates the need for manual screw tightening, significantly accelerating installation and enhancing connection stability. It provides a hardened layer of protection for sensitive I/O electronics through integrated surge absorption, making it a standard for mission-critical industrial loops.

Part Number Breakdown: ATA4S

Technical Specifications

The ATA4S-10 meets rigorous Japanese engineering standards for signal fidelity:

• Model Number: ATA4S-10

• Number of Channels: 16 Analog Input channels

• Connection Type: Pressure clamp (Tool-free wiring)

• Surge Protection: Integrated surge absorber for every channel

• Environmental Compliance: ISA G3 standard (Corrosion resistant)

• Dimensions (W×H×D): 114 mm × 32.6 mm × 60.5 mm

• Weight: 0.2 kg

• Compatibility: Yokogawa ADMAG series and CENTUM VP Analog I/O Modules

• Condition: 100% Brand New and Original

• Country of Origin: Japan

Engineering Advantages

• Rapid Tool-Free Termination: The pressure clamp design allows technicians to insert stripped wires directly into the terminal housing. This mechanism maintains constant tension on the wire, preventing the terminal loosening that often occurs with traditional screw-type blocks in high-vibration environments.

• Enhanced Surge Mitigation: Every channel includes a built-in surge absorber. This component clamps high-voltage transients—caused by lightning strikes or inductive load switching—before they reach the expensive I/O modules, preventing system-wide electronic failure.

• ISA G3 Corrosive Protection: Yokogawa treats the ATA4S-10 to meet ISA G3 standards. This ensures the copper contacts and internal paths resist oxidation in high-sulfur or high-chlorine atmospheres common in petrochemical refineries and pulp mills.

• Streamlined Maintenance: The compact footprint (114mm width) saves valuable DIN rail space. Because the wiring requires no tools, field engineers can perform loop checks or instrument replacements much faster, reducing overall plant downtime.

FAQs

Q1: Does the ATA4S-10 support 2-wire transmitter power distribution?

A1: The ATA4S-10 acts as the physical terminal interface. While it manages the signal path, the power distribution for 2-wire transmitters (loop power) depends on the specific Analog Input module (e.g., AAI143 or AAI141) to which this terminal block connects.

Q2: What is the benefit of the surge absorber in the "-10" version?

A2: The integrated surge absorber significantly reduces the risk of "blown" channels during electrical storms or power surges. It shunts excess energy to ground, protecting the delicate semiconductor components within your DCS I/O subsystem.

Q3: Can I use multi-stranded wire without ferrules?

A3: While the pressure clamp will hold multi-stranded wire, we highly recommend using ferrules to ensure a gas-tight connection and to prevent stray strands from causing short circuits between the high-density terminals.

Q4: Is this a refurbished or original Yokogawa part?

A4: We supply only 100% Brand New and Original Yokogawa ATA4S-10 units in their factory packaging. This guarantees that the surge protection components and corrosion-resistant coatings are fully intact and functional.