ATA4S-00 Yokogawa CENTUM VP Analog Termination Unit

Availability: 99 left in stock

Yokogawa ATA4S-00 CENTUM VP FIO System The Yokogawa ATA4S-00, also cataloged as the ATA4S Analog I/O Termination Unit, serves as...

SKU: ATA4S-00

Manufacturer: Yokogawa
Product No.: ATA4S-00
Product Type: Analog Input Modules
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 800g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Yokogawa ATA4S-00 CENTUM VP FIO System

The Yokogawa ATA4S-00, also cataloged as the ATA4S Analog I/O Termination Unit, serves as the primary ATA4S Analog I/O Termination Unit utilized to execute pressure clamp field signal termination across CENTUM VP and CS 3000 Field I/O platforms.

Hardware Specifications

Parameter	Specification
Model	ATA4S-00 (Style S2)
Brand	Yokogawa
Origin	Japan
Weight	0.8 kg
Dimensions	110 mm x 130 mm x 45 mm
Operating Temp	-20 to +70 deg C
Power Consumption	Passive (0 W)
Channel Capacity	16 Channels
System Configuration	Single (Non-Redundant)
Connection Type	M3.5 Pressure Clamp Terminals
Applicable Signals	4-20 mA current loops, Voltage (1-5 V), Thermocouples, RTDs
Dielectric Withstanding Voltage	500 V AC between terminals and ground
Insulation Resistance	10 MΩ or higher (measured at 500 V DC)

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

The ATA4S-00 handles high-density analog loop marshalling while maintaining full compatibility with the 4-20 mA HART loop protocol. The unit passes digital high-frequency HART signals transparently between field instruments and the host FIO subsystem without introducing attenuation or loop impedance deviations. Physical layout tracks distinct isolation pathways across all 16 channels, maintaining dielectric integrity up to 500 V AC relative to the chassis ground frame. This prevents ground loop contamination and cross-talk when executing cold junction compensation (CJC) for thermocouple signals routing through adjacent termination points.

Frequently Asked Questions

Q: Does the ATA4S-00 analog termination unit support online hot-swap operations under loop load?

A: Yes. Because the ATA4S-00 is a passive physical marshalling block, operators can disconnect and reconnect field signals or module-side cables without damaging host I/O modules, provided loop isolation protocols are followed to prevent open-circuit faults on active 4-20 mA control loops.

Q: How does the pressure clamp mechanism handle connection stability without crimp terminals?

A: The M3.5 pressure clamp design utilizes a direct gas-tight screw plates tension system. This mechanical configuration applies constant downward force on solid or stranded wires, ensuring zero signal disruption under high vibration environments without requiring external crimp lugs.

Field Installation Guidelines

Mounting Orientation and Enclosure Stability: Mount the ATA4S-00 securely onto the designated cabinet base or panel rail using standard fixing screws. Ensure the mounting substrate is rigid and completely free of vibration to maintain terminal torque integrity.
Wiring Termination and Stripping: Strip field signal wires to the exact recommended length. Insert the conductor into the M3.5 pressure clamp terminal without exposing bare strands outside the housing, then torque the screw to prevent contact degradation on 4-20 mA current loops.
Shielding Ground Continuity: Route instrument cable shields directly to the marshalling cabinet copper ground bar. Maintain separation between the signal shield path and the terminal chassis ground to minimize high-frequency electromagnetic interference across the 16 analog channels.

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