Yokogawa ATT4D-00 S2 Pressure Clamp Terminal Block

Overview

Configured for field signal termination in Yokogawa CENTUM VP I/O systems, the Yokogawa ATT4D-00 S2 (ATT4D-00 Pressure Clamp Terminal Block) provides direct physical connection between field wiring and I/O module channels.

Hardware Specifications

4-20 mA HART and Channel Isolation Interface Characteristics

The Yokogawa ATT4D-00 S2 is designed as a terminal interface component for Yokogawa distributed control system I/O assemblies. It supports organized field wiring termination and maintains signal routing between field instruments and compatible I/O modules.

For process instrumentation applications, Yokogawa I/O architectures commonly use 4-20 mA HART loop protocol and FOUNDATION Fieldbus / Profibus PA connectivity depending on the installed module configuration. Therefore, terminal block selection must match the electrical interface requirements of the connected I/O card.

The pressure clamp mechanism provides stable conductor retention without requiring additional crimp terminals. In addition, proper wiring separation and shield termination practices help maintain channel-to-channel isolation performance in analog and digital signal circuits.

Frequently Asked Questions

Q: Is the Yokogawa ATT4D-00 S2 an active electronic module?
A: No. The ATT4D-00 S2 is a passive pressure clamp terminal block used for field wiring termination and signal connection within compatible Yokogawa I/O systems.

Q: Can the ATT4D-00 S2 be replaced while the control system is operating?
A: Replacement procedures depend on the installed CENTUM VP hardware configuration. The connected I/O module power status and system maintenance procedures must be verified before removal.

Q: Does the ATT4D-00 S2 provide signal conversion or isolation functions?
A: No. The terminal block provides electrical connection and termination functions. Signal conditioning and isolation functions are performed by the associated Yokogawa I/O module.

Field Installation Guidelines

• Verify the terminal block model before installation and confirm compatibility with the corresponding Yokogawa I/O module.
• Install field conductors according to the terminal assignment diagram provided for the specific I/O configuration.
• Maintain separation between analog signal wiring, digital wiring, and power conductors to reduce electrical interference.
• Connect cable shields according to the system grounding design and avoid multiple uncontrolled grounding points.
• Check conductor insertion depth and clamp engagement to ensure proper mechanical retention.
• Inspect wiring polarity and channel allocation before applying system power.

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Contact: Manski Wong +86 18030205725 manski@cambia.cn