ATF9S-00 Yokogawa Fieldbus Terminal Block

Yokogawa ATF9S-00 Pressure Clamp Terminal Block

Yokogawa ATF9S-00 Pressure Clamp Terminal Block

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The Yokogawa ATF9S-00, also cataloged as the ATF9S Pressure Clamp Terminal Block, operates as a dedicated hardware component for Foundation...

رمز المنتج: ATF9S-00

Manufacturer: Yokogawa
Product No.: ATF9S-00
Product Type: Terminal Blocks
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 100g
Shipping port: Xiamen
Warranty: 12 months

وصف التقييمات

The Yokogawa ATF9S-00, also cataloged as the ATF9S Pressure Clamp Terminal Block, operates as a dedicated hardware component for Foundation Fieldbus signal termination and routing within Yokogawa Fieldbus I/O system networks. Configured as a 4-port field wiring interface, this unit establishes a direct physical and electrical connection between field-level instrumentation and the ALF111 Fieldbus communication module.

Hardware Specifications

Parameter	Specification
Model	ATF9S-00
Brand	Yokogawa
Origin	Japan
Weight	<= 0.10 kg
Dimensions	35.2 mm x 27.2 mm x 112 mm
Operating Temp	-20 to +70 deg C
Power Consumption	Passive device (backplane draw dependent on connected ALF111 loop load)
Signal Type	Foundation Fieldbus H1 segment
Connection Type	Tool-less pressure clamp
Port Count	4 (labeled CH1-CH4)
Relative Humidity	5-95 % RH (non-condensing)
Environmental Code	ISA Standard G3 conformal coating
Isolation	Full galvanic separation between field and system circuitry
Suffix Code Meaning	-00: Standard configuration without surge absorber

Process Control & DCS Instrumentation Properties

Operating within the CENTUM VP and CENTUM CS3000 Distributed Control System (DCS) topologies, this terminal block provides dedicated channel-to-channel isolation and structured physical termination for Foundation Fieldbus networks. The passive electrical pathway preserves segment signaling integrity without injecting impedance imbalances. Galvanic isolation barriers prevent transient ground-loop currents from degrading the digital bus signaling waveforms, while the component layout mitigates cross-talk across the CH1 through CH4 signal vectors.

Frequently Asked Questions

Q: Does the ATF9S-00 support hot-swapping or active replacement under powered fieldbus segment conditions?

A: The ATF9S-00 is a passive physical terminal block. Disconnecting the block or extracting field wiring during active operations will break the Foundation Fieldbus segment continuity, dropping all downstream field nodes connected to those specific ports.

Q: What are the specific cable gauge limitations for the tool-less pressure clamp mechanisms?

A: The tool-less pressure clamps accept solid or stranded copper conductors ranging from 0.2 to 2.5 mm square (approximately 24 to 12 AWG). Ferruled connections are recommended for stranded field wiring to ensure uniform contact retention.

Q: How does the "-00" suffix affect high-transient or outdoor lightning-prone fieldbus routing?

A: The "-00" suffix designates the standard version lacking an integrated surge absorber. For field lines routed through high-exposure outdoor paths, external surge protection devices must be installed upstream in the loop layout to protect the unit and the associated ALF111 module.

Field Installation Guidelines

Mounting Orientation and Enclosure Requirements: Fix the unit firmly to the panel or dedicated cabinet rack support inside an IP54 or greater rated industrial enclosure to comply with ISA Standard G3 harsh environmental protections.
Shield Grounding Protocols: Terminate all Foundation Fieldbus cable shields at the designated instrument ground bus. Maintain shield continuity across the terminal block interface while preventing any accidental contact between the shield drain wire and the local cabinet chassis metalwork.
Wiring Sequence and Tension Constraints: Strip field cables to the manufacturer-specified length (typically 8 to 10 mm) before pressing the clamp engagement levers. Ensure no bare copper is exposed outside the pressure clamp frame. Do not bundle Fieldbus signal cables parallel to high-voltage AC power distribution lines.

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