Product Short Description
Product Name: Foundation Fieldbus (FF) H1 Communication Module
Product Overview:
A rugged Foundation Fieldbus H1 interface that extends fieldbus connectivity into Zone 0/1 hazardous areas with intrinsic safety, surge protection, and support for up to 32 field devices per module.
Description
Technical Specifications:
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Parameter
|
Specification
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|---|---|
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Protocol
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Foundation Fieldbus H1 (31.25 kbps)
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|
Max Devices
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32 FF devices per module
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Safety Certification
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ATEX II 1 G Ex ia IIC T4 Ga; IECEx Ex ia IIC T4 Ga
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Power Supply
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24 V DC (18 – 32 V DC), 0.8 A max
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Communication Ports
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1 × FF H1 fieldbus (twisted pair); 1 × Ethernet 10/100 Mbps RJ45 for config
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Mounting
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35 mm DIN rail (EN 50022)
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Protection
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IP20 (panel‑mount, indoor)
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Operating Temp.
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‑40 °C to +70 °C
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Humidity
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5 – 95 % RH, non‑condensing
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Manufacturer
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MTL Instruments (a Siemens company)
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Functional Features:
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Intrinsic Safety (Ex ia) – Limits electrical energy to non‑ignition level in Zone 0/1.
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Built‑in Surge Protection – Guards fieldbus trunk from transient overvoltage.
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Full FF H1 Functionality – Device configuration, parameter monitoring, diagnostics, remote calibration.
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DCS Integration – Seamless with Siemens PCS 7, Emerson Ovation, Honeywell Experion.
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Ethernet Config Port – Remote engineering via MTL configuration tool or third‑party FF tools (e.g., Emerson AMS).
Application Scenarios: Offshore oil wellhead monitoring, chemical reactor control, smart transmitter/valve networking in hazardous zones, modernization of FF‑based control architectures.
Working Principle: Acts as a barrier/interface translating the intrinsically safe FF H1 trunk to the non‑hazardous‑side DCS, while regulating bus power and protecting against surges.
Installation Requirements: Install on DIN rail inside a control cabinet located in a safe area; connect FF H1 trunk via shielded twisted pair to field devices; ensure proper earthing of the bus shield.
Usage Notes: Do not exceed 32 devices per segment; verify Ex ia certification matches the hazardous zone classification; use only approved FF power supplies.
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