ATA4D-00 Yokogawa CENTUM Series Datasheet & Technical Manual

ATA4D-00 Yokogawa CENTUM Dual-Redundant Analog Terminal Block

ATA4D-00 Yokogawa CENTUM Dual-Redundant Analog Terminal Block

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Yokogawa ATA4D-00 CENTUM Series Terminal Block Configured for structured wiring and termination of analog input/output signals in CENTUM VP and...

رمز المنتج: ATA4D-00

Manufacturer: Yokogawa
Product No.: ATA4D-00
Product Type: Analog Terminal Blocks
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 400g
Shipping port: Xiamen
Warranty: 12 months

وصف التقييمات

Yokogawa ATA4D-00 CENTUM Series Terminal Block

Configured for structured wiring and termination of analog input/output signals in CENTUM VP and ProSafe-RS systems, the Yokogawa ATA4D-00 (ATA4D Analog Terminal Block) provides direct physical/electrical execution. The hardware routes up to 16 analog channels through a dual-redundant circuit layout, maintaining continuous electrical paths between field transmitters and downstream input/output modules. By establishing distinct trace paths on a unified physical footprint, the block handles high-density sensor routing across the control network infrastructure.

Hardware Specifications

Parameter	Specification
Model	ATA4D-00
Brand	Yokogawa
Origin	Japan
Weight	0.4 kg
Dimensions	65.6 mm x 72 mm x 114 mm
Operating Temp	-20 to +70 deg C
Power Consumption	Not Specified
Product Type	Analog Terminal Blocks
Channel Count	16 channels (supports dual redundancy)
Connection Type	Pressure-clamp terminal
Rated Voltage	24 VDC
Rated Current	10 A
Compliance	EN 61000-6-2 EMC standards

Process Control and Analog Loop Characteristics

The assembly integrates copper signal tracks built to accommodate the 4-20 mA HART loop protocol without degrading digital telemetry data. Channel-to-channel isolation networks act as physical barriers to attenuate common-mode noise and prevent transient voltages from propagating into adjacent circuits. For direct thermocouple field terminations, the unit employs integrated cold junction compensation (CJC) circuits directly at the physical pressure-clamp interface, matching localized thermal variations to preserve low-voltage analog signal scaling accuracy across the system bus.

Frequently Asked Questions

Q: How does the dual-redundant terminal layout prevent process data loss during an I/O module changeout?

A: The internal bus splits each incoming field sensor wire into parallel isolated tracks leading to two separate system cable connectors on the back of the board. This configuration allows technicians to disconnect or swap one upstream I/O module while the second active card maintains full current loop impedance and continuity.

Q: Can the pressure-clamp terminals accommodate fine-stranded instrumentation wire without ferrules?

A: Yes. The internal spring-loaded mechanisms maintain constant clamping force on either solid or bare stranded copper conductors. Installers must strip the outer insulation to the standard specified depth to ensure a gas-tight, low-resistance connection inside the terminal housing.

Q: What operational symptoms indicate a failure of the optional integrated EMC surge absorber?

A: A catastrophic transient surge across the 24 VDC supply line will cause the internal surge protection components to short to earth, forcing the line fuse to clear. This structural action safeguards the downstream analog channel isolation barriers from overvoltage destruction.

Field Installation Guidelines

DIN Rail Substrate Grounding: Snap the terminal housing firmly onto a standard 35 mm DIN rail. Ensure the metallic base grounding clip establishes direct, paint-free contact with the rail to clear high-frequency noise currents.
Drain Wire Shield Matrix: Terminate all external twisted-pair instrument shields to a dedicated copper ground bus bar located near the entry gland plate. Do not wire shield drains directly into the active terminal block contact positions.
Separation of Signal Conductors: Neatly dress all low-voltage analog loop cables inside dedicated plastic wiring tracks. Maintain a minimum physical spacing separation of 200 mm from adjacent high-voltage AC distribution circuits or motor starter cables.
Tension and Clearance Audits: Inspect the completed termination field to verify that no loose copper strands project outside the individual pressure-clamp apertures, eliminating potential channel-to-channel short circuits.

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