ATK4A-00 Yokogawa Analog Terminal Block

Yokogawa ATK4A-00 CENTUM Dual-Redundant Analog Terminal Block

Yokogawa ATK4A-00 CENTUM Dual-Redundant Analog Terminal Block

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Yokogawa ATK4A-00 CENTUM / ProSafe-RS Series Terminal Block The Yokogawa ATK4A-00 serves as the primary ATK4A Analog Terminal Block utilized...

رمز المنتج: ATK4A-00

Manufacturer: Yokogawa
Product No.: ATK4A-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 ATK4A-00 CENTUM / ProSafe-RS Series Terminal Block

The Yokogawa ATK4A-00 serves as the primary ATK4A Analog Terminal Block utilized to execute structured wiring and signal termination across CENTUM VP and ProSafe-RS platforms. The hardware establishes direct physical connection pathways for up to 16 isolated channels, supporting dual-redundant deployment topologies for mission-critical industrial loops. By deploying discrete terminal routing paths, the assembly routes raw field variables into the matching system input/output processing modules without signal distortion.

Hardware Specifications

Parameter	Specification
Model	ATK4A-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 Capacity	16 channels (Supports dual redundancy)
Connection Type	Pressure-clamp terminal
Rated Voltage	24 VDC
Rated Current	10 A
Interface Support	4-20 mA analog loops, HART devices, FOUNDATION Fieldbus, Profibus PA
Mounting Base	DIN rail or panel mount
Compliance	EN 61000-6-2 EMC standards

Process Control Instrumentation Interface & Logic Attributes

The interface assembly implements dedicated channel-to-channel isolation infrastructure engineered to mitigate localized loop crosstalk inside dense electrical cabinets. The physical backplane trace geometry accommodates the 4-20 mA HART loop protocol alongside high-frequency digital communication signals, enabling transparent data pass-through for FOUNDATION Fieldbus and Profibus PA field instruments. Additionally, the unit incorporates dedicated reference nodes that support cold junction compensation (CJC) processing loops when external thermocouple sensors interface directly with the pressure-clamp terminal array, eliminating environmental temperature tracking errors.

Frequently Asked Questions

Q: How does the dual-redundant circuit architecture inside the terminal block manage a sudden signal failure on one transmission line?

A: The passive internal design provides separate parallel physical routing paths for two independent I/O cables. If one module interface cable experiences an open circuit or physical detachment, the second redundant line continues to maintain uninterrupted loop current flow, preventing control system downtime.

Q: Can this terminal block assembly accept direct power distribution inputs up to its maximum 10 A rating?

A: Yes, the heavy-duty pressure-clamp connections and trace copper density allow the unit to handle up to 10 A total rated current at 24 VDC. Installers must size the field delivery conductors appropriately to match load requirements and avoid localized thermal accumulation.

Q: What method is used to integrate transient voltage protection into this particular base model?

A: The hardware architecture accommodates optional add-on EMC surge absorbers directly across the primary bus links. These components clamp transient spikes caused by inductive switching or external surges before the electrical energy can enter the connected I/O processing cards.

Field Installation Guidelines

DIN Rail Attachment: Snap the terminal block base firmly onto the standard metallic DIN rail track, verifying that the integrated spring chassis grounding clip makes clean metal-to-metal contact with the rail to establish a stable reference ground path.
Drain Wire Shield Matrix: Connect all instrument cable outer shields to a single, dedicated external grounding bus bar prior to entering the terminal matrix. Do not terminate raw shield drain wires directly into the signal pressure clamps.
Separation of Signal Conductors: Enclose the low-voltage 4-20 mA analog input cables inside separate wireways, ensuring a minimum spatial clearance of 200 mm from high-voltage AC distribution circuits or motor drive conductors.
Pressure-Clamp Tension Verification: Strip field conductor insulation according to the specified depth and tighten the pressure clamps securely, preventing micro-disconnections or increased loop resistance caused by typical industrial high-vibration environments.

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