Pepperl+Fuchs HID2030SK

Pepperl+Fuchs HID2030SK

Product Introduction HID2030SK is enhanced variant of HID2030, a 2-channel isolated barrier for intrinsically safe 2-wire SMART transmitters. It supplies excitation power to field HART transmitters in explosive hazardous areas, repeats analog current signal and provides dual 4-20mA sink output on safe side. The module supports signal splitting function, sends one field measurement signal to two separate control system inputs simultaneously. It retains SIL 2 functional safety certification and line fault detection capability.

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Description

Pepperl+Fuchs HID2030SK

Technical Specifications

  • Product Type: 2-channel isolated barrier with signal splitter function
  • Power Supply: 19 V DC to 30 V DC bus powered via termination board
  • Field Side Output: Minimum 15.5 V DC at 20 mA for 2-wire transmitters
  • Signal Range: 4 mA to 20 mA analog current signal
  • Safe Side Output: Dual passive current sink outputs, load range 0 Ω to 650 Ω
  • Isolation Voltage: 2.5 kV AC galvanic isolation
  • Functional Safety: SIL 2, SC 3 according to IEC 61508
  • Diagnostic Function: Line fault detection for wire break and short circuit
  • HART Compatibility: Supports HART digital communication transmission
  • Protection Rating: IP20
  • Operating Temperature: -20 °C to +60 °C
  • Mounting: Standard 35 mm DIN rail mounting
  • Housing Width: 18 mm per module

Functional Features

  1. Regulated power supply for 2-wire HART SMART transmitters in intrinsically safe hazardous areas.
  2. Signal splitting function converts one field 4-20mA input into two independent 4-20mA output signals.
  3. 2 independent signal channels support two separate field transmitter measurement loops.
  4. Galvanic isolation eliminates ground loop interference between field and control rack.
  5. Full pass-through of HART digital signal for remote transmitter configuration and diagnostics.
  6. Line fault detection continuously monitors field cable open circuit and short circuit faults.
  7. Dual passive current sink outputs feed two separate PLC / DCS analog input modules.
  8. Compact slim DIN rail housing saves cabinet installation space.
  9. Removable screw terminal blocks simplify field wiring and maintenance.
  10. Continuous self-test verifies internal safety circuit integrity during normal operation.

Application Scenarios

  • Petrochemical plant redundant DCS signal acquisition from single field transmitter
  • Refinery hazardous zone instrument signal splitting for control and monitoring system
  • Offshore platform HART transmitter signal for both control and safety instrumented system
  • Chemical process plant intrinsically safe analog signal duplication
  • Explosion-proof production area instrument loop signal distribution

Material Composition

  • Housing: Flame-retardant polycarbonate plastic enclosure
  • Main PCB: FR4 printed circuit board with conformal coating
  • Isolation components: High isolation optocoupler and isolation transformers
  • Power regulation components: Precision linear voltage regulator ICs
  • Terminal blocks: Tin-plated copper alloy screw terminals
  • Surge protection components: Transient suppression diodes and current limiting resistors

Structural Characteristics

  • Slim single-width DIN rail plastic housing.
  • Front panel LED indicators for power and channel fault status.
  • Rear removable screw terminals separated into hazardous side terminals and safe side terminals.
  • Internal physical isolation barrier separates intrinsically safe circuit and non-safe control circuit.
  • Independent signal splitting circuit for each input channel.
  • Passive convection cooling without fan components.

Working Principle 24 V DC bus power supplies the HID2030SK internal power regulation circuit. The module provides constant excitation voltage to 2-wire HART transmitters mounted in hazardous zone. The field transmitter outputs 4-20 mA current proportional to measured process variable. The internal signal splitter circuit duplicates this analog signal into two identical 4-20mA sink outputs on safe side, while maintaining galvanic isolation. HART digital signal superimposed on the current loop passes through the barrier for remote configuration. Line fault detection circuit monitors loop impedance continuously and triggers fault indication for wire break or short circuit.

Installation Requirements

  • Mount HID2030SK on 35 mm DIN rail inside non-hazardous control cabinet only.
  • Use shielded twisted pair intrinsically safe instrument cable for field transmitter wiring.
  • Separate intrinsically safe wiring from non-safe power cables in cable trays.
  • Complete protective earth connection to cabinet ground bar.
  • Verify intrinsically safe loop calculation matches field transmitter parameters before commissioning.
  • Perform 4-20mA signal splitting test and line fault simulation test after wiring completion.
  • Confirm ATEX / IECEx installation rules for hazardous area instrument wiring.

Usage Notes

  • Do not modify internal safety components of the isolated barrier.
  • Do not connect non-intrinsically safe power to field-side terminals.
  • Keep cabinet environment free of corrosive gas and conductive dust.
  • Inspect terminal screw tightness periodically under vibration conditions.
  • Disconnect power before modifying intrinsically safe wiring.
  • Use anti-static wristband when handling spare modules.
  • Replace unit immediately when permanent isolation or signal splitting fault occurs.

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