Overview
Configured for analog signal termination in CENTUM VP DCS I/O systems, the Yokogawa ATA4D-00 (ATA4D Dual Pressure Clamp Terminal Block) provides direct physical and electrical connection for 4 to 20 mA DC and 1 to 5 V DC field transmitter signals. It supports dual redundant configurations for Yokogawa current/voltage input modules.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | ATA4D-00 |
| Brand | Yokogawa |
| Product Type | Dual Pressure Clamp Terminal Block |
| Origin | Japan |
| Power Consumption | Passive terminal block, no external power consumption |
| Compatible System | Yokogawa CENTUM VP DCS |
| Signal Type | 4 to 20 mA DC and 1 to 5 V DC standardized signals |
| Application Module | Current/Voltage Input Modules |
| Input Configuration | 2-wire and 4-wire transmitter connection |
| Channel Capacity | Supports 16-channel analog input module applications |
| Terminal Method | Pressure clamp connection |
| Redundancy Support | Dual redundant configuration |
Yokogawa DCS Analog Signal Interface Characteristics
The ATA4D-00 is designed for Yokogawa CENTUM VP analog input signal interfaces. It connects field transmitters with current/voltage input modules that receive standardized process signals.
The terminal block supports 4 to 20 mA HART loop protocol applications when used with compatible Yokogawa analog input modules. Additionally, the pressure clamp terminal structure maintains stable conductor contact without requiring traditional screw tightening.
The interface design supports channel-to-channel isolation requirements when paired with compatible isolated analog input modules. Therefore, it is suitable for signal wiring arrangements where stable separation between field measurement circuits is required.
Frequently Asked Questions
Q: What type of field signals can the Yokogawa ATA4D-00 support?
A: The ATA4D-00 supports standardized analog signals including 4 to 20 mA DC and 1 to 5 V DC from 2-wire and 4-wire transmitters through compatible Yokogawa input modules.
Q: Can the ATA4D-00 be used in redundant CENTUM VP configurations?
A: Yes. The terminal block supports dual redundant configuration when installed with compatible Yokogawa analog input module arrangements.
Q: Does the ATA4D-00 require an external power supply?
A: No. The ATA4D-00 is a passive terminal interface component and does not consume external electrical power.
Field Installation Guidelines
- Install the ATA4D-00 according to the Yokogawa CENTUM VP hardware installation documentation.
- Verify terminal assignment before connecting field wiring to prevent signal channel mismatch.
- Use shielded instrumentation cables for analog signal circuits where electromagnetic interference may affect measurement accuracy.
- Connect cable shields according to the site grounding standard and Yokogawa system wiring recommendations.
- Separate analog signal wiring from high-voltage power cables and high-frequency switching circuits.
- Confirm transmitter loop polarity before energizing the connected analog input module.
- Check terminal clamp engagement to ensure proper conductor retention after installation.
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