Yokogawa ATA4S-10 S2 Pressure Clamp Terminal Block

Product Description

The Yokogawa ATA4S-10 S2, also cataloged as the ATA4S-10 Pressure Clamp Terminal Block, operates as a dedicated hardware component for analog signal termination with surge absorber within Yokogawa distributed control system networks.

Hardware Specifications

4-20 mA HART Loop Protocol and Channel-to-Channel Isolation

This terminal block supports 4-20 mA analog loop connectivity with integrated surge absorber circuitry. Furthermore, the design provides channel-to-channel isolation rated at 500-1500 V AC, which suppresses cross-talk between adjacent signal paths. Consequently, each of the 16 pressure clamp terminals maintains independent electrical separation, thereby preventing ground loop formation in multi-point analog installations. Additionally, the 5 V DC power supply operates within a 2-8 W consumption envelope, ensuring stable loop excitation across the specified temperature range of 0 deg C to +60 deg C.

Frequently Asked Questions

Q: Does the ATA4S-10 S2 support hot-swap insertion while the DCS rack remains powered?

A: No. The terminal block must be installed or removed only after the associated I/O module is de-energized. Surge absorber components require discharge time before physical contact.

Q: What is the recommended torque specification for the pressure clamp terminals?

A: Apply a standard flat-blade screwdriver to secure the clamp lever until the conductor is fixed. Over-tightening beyond the mechanical stop may deform the spring clamp element.

Q: Can this terminal block interface directly with HART-enabled field transmitters?

A: Yes. The analog signal path is transparent to HART protocol communication. However, verify that the connected Yokogawa analog input module supports HART signal superimposition at 5 V DC loop power.

Field Installation Guidelines

Mount the terminal block on a DIN rail or panel position with adequate clearance for cable routing. Strip the conductor insulation to the length indicated by the clamp housing mark. Insert the bare wire fully into the clamp aperture, then close the pressure clamp lever until it locks. For shielded twisted-pair analog cables, connect the shield drain wire to the designated ground terminal and bond the shield to the control cabinet ground bus at one end only. Route analog signal cables separately from power conductors to maintain noise immunity. Verify that the operating environment stays within 0 deg C to +60 deg C and relative humidity below 90 percent non-condensing. Before energizing, inspect all terminations for proper wire retention and confirm no stray strands bridge adjacent channels.

Other Attributes

• Country of Origin: Japan/Singapore
• Lead Time: In Stock, 2 Working Days

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