Precision Field Connection Interface for High-Integrity Process Automation
The Yokogawa ATA4D-00 Dual Redundant Pressure Terminal Block is a rugged industrial interface module designed for reliable connection between field pressure transmitters and Yokogawa CENTUM VP distributed control system (DCS) I/O modules. It is engineered to enhance signal integrity, reduce wiring complexity, and ensure continuous operation through a dual-redundant connection architecture.
Built for mission-critical process environments, this terminal block provides stable analog signal termination for 4–20 mA or 1–5 V DC signals, making it a trusted component in large-scale industrial automation systems.
Technical Specifications
| Parameter | Specification |
|---|
| Model | ATA4D-00 |
| Product Type | Dual Redundant Pressure Clamp Terminal Block |
| System Compatibility | Yokogawa CENTUM VP / FIO I/O Modules |
| Channels | 16 analog input channels |
| Signal Type | 4–20 mA DC / 1–5 V DC |
| Input Accuracy | ±16 μA or ±4 mV |
| Data Update Cycle | 10 ms |
| Step Response Time | ~100 ms |
| Input Resistance | 400 Ω (at 20 mA) to 1000 Ω (at 4 mA) |
| Connection Type | Pressure clamp terminals |
| Surge Protection | Optional configuration |
| Operating Temperature | -20°C to +60°C |
| Dimensions | 6.5 × 7.2 × 11.4 cm |
| Weight | ~0.2–0.3 kg |
Application Scenarios
The ATA4D-00 is widely deployed in industrial automation systems where reliable analog signal transmission is essential:
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Distributed Control Systems (DCS)
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Oil & gas production facilities
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Petrochemical and refinery plants
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Power generation control systems
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Process instrumentation panels
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Pressure monitoring and transmitter networks
It serves as the critical interface layer between field instruments and control system input modules, ensuring structured and noise-resistant wiring.
Engineering Advantages and Design Value
The ATA4D-00 is engineered to deliver high reliability signal interfacing with minimal maintenance overhead. Its dual-redundant architecture allows two independent connection paths, improving system availability and reducing the risk of signal interruption in critical operations.
Key advantages include:
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Dual-redundant connection design for higher system availability
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Stable analog signal conditioning for 4–20 mA and 1–5 V DC inputs
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Pressure clamp wiring system, ensuring secure and vibration-resistant connections
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16-channel density design, reducing cabinet space requirements
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Fast signal update cycle (10 ms) for responsive process control
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Compact industrial form factor, simplifying cabinet integration
This combination of reliability and compact engineering makes it a strong fit for high-integrity process automation environments.
Technical FAQs
1. What is the main function of the ATA4D-00?
It connects field pressure transmitters to DCS input modules with redundant signal paths.
2. How many channels does it support?
It supports up to 16 analog input channels.
3. What types of signals does it handle?
4–20 mA DC and 1–5 V DC analog signals.
4. What does “dual redundant” mean?
It provides two parallel wiring paths to maintain signal continuity in case of a fault.
5. What system is it compatible with?
Yokogawa CENTUM VP and FIO I/O architectures.
6. Is it suitable for harsh environments?
Yes, it is designed for industrial control cabinet conditions with vibration and electrical noise.
7. What is its typical weight?
Approximately 0.2–0.3 kg depending on configuration.
8. What is the installation method?
DIN rail or control cabinet mounting.
9. Does it include surge protection?
Optional surge absorber configurations are available.
10. Why is it important in DCS systems?
It ensures reliable, organized, and redundant field signal connectivity for stable process control.
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