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F6705 HIMA
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F6705 HIMA

Original price was: $6,564.00.Current price is: $2,367.00.

Technical Architecture & Functional Positioning

The F6705 resides at the field interface layer of the HIQuad safety architecture, converting redundant digital commands from the central processing unit (CPU) into isolated analog signals for actuators, valves, or transmitters in safety instrumented functions (SIFs). Each channel employs a dedicated D/A converter with opto-isolated feedback, ensuring that output values are cross-verified against the bus command; any discrepancy triggers an immediate shutdown to a predefined safe state, such as 0 mA or 24 mA.

HIMA’s design incorporates triple modular redundancy (TMR) principles adapted for I/O: the module receives synchronized data from multiple CPUs via the fault-tolerant backplane bus, using majority voting at the input stage before conversion. This prevents single-point failures from propagating to the field, while the galvanic isolation (1500 V DC) protects against ground loops and common-mode transients common in process environments. The sink/source configurability allows seamless integration with legacy 4-wire transmitters or modern 2-wire loops without external amplifiers.

In engineering terms, this module addresses the critical need for deterministic analog control in SIL 3 loops where signal integrity directly impacts process safety time (PST). For instance, in emergency shutdown (ESD) systems, the <10 ms response ensures compliance with API 14C or IEC 61511 proof-test intervals, reducing the probability of failure on demand (PFD) below 10⁻⁴.

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Category: SKU: F6705 HIMA
  • Email:sales@sxrunsheng.cn
  • Phone:+86 15340667322
  • Whatsapp：+86 15340667322

    • Description

    Key Technical Specifications

    • Product Model: F6705
    • Manufacturer: HIMA
    • System Platform: HIQuad / HIQuad X (H51q PES)
    • Number of Channels: 2 (independent, galvanically isolated)
    • Output Type: Current sink/source, 0-20 mA or 4-20 mA selectable
    • Output Accuracy: ±0.1 % of full scale (20 mA)
    • Resolution: 12-bit (4096 steps)
    • Load Compliance Voltage: 24 V DC max (sink mode), 12 V DC min
    • Response Time: < 10 ms for 90 % step change
    • Isolation: 1500 V DC channel-to-channel and channel-to-bus, functional and safety isolation per AK 1
    • Power Consumption: 4 W typical from +5 V / +24 V backplane supply
    • Operating Temperature: –20 °C to +60 °C (derate above 50 °C)
    • MTBF: > 500,000 hours at 40 °C (per IEC 61709)
    • Diagnostics: Integrated self-test with LED fault indication and shutdown relay
    • Certifications & Standards: SIL 3 (IEC 61508), PL e (ISO 13849-1), ATEX Zone 2 / IECEx, CE, GL marine type approval
    • Dimensions (W × H × D): 20.7 × 147 × 67 mm (single-slot module)

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