Product Short Description
Product Brief Introduction
HID2030SK belongs to Pepperl+Fuchs H-System 18mm compact isolation barrier series, designed for explosion hazardous area intrinsic safety signal transmission. It supplies power to 2-wire/3-wire HART smart transmitters in Zone 0/1/2 hazardous zones, isolates field Ex-side and safe control-side, supports bidirectional HART digital communication, and converts 4–20mA field current signal to sink-type analog output for PLC/DCS acquisition. SIL 2 functional safety certified for safety instrumented systems (SIS)
Description
Core Technical Specifications
- Power Supply: Bus-powered 20.4–30 VDC, reverse polarity protection, max 1.05W power dissipation per channel
- Field Side Input (Ex Zone):
- Signal range: 4–20mA, current limit 26mA typical
- Input resistance: 40Ω for current source transmitters
- Minimum operating voltage at 20mA: 15.5V
- Signal ripple: ≤10mV effective value
- Supports HART bidirectional modulation communication
- Safe Side Output (SK Sink Mode):
- Output signal: 4–20mA sink or 1–5V via built-in 250Ω shunt resistor
- Max load resistance: 650Ω
- Step response time (10–90%): 70ms
- Fault threshold: <0.2mA (open circuit) or >24mA (short circuit) line fault detection (LFD)
- Mechanical Dimension: 18mm(W) × 106mm(H) × 128mm(D)
- Safety Rating: IEC 61508 SIL 2, ATEX/IECEx intrinsic safety Ex ia IIC T4, Zone 0/1/2 certification
- Ambient Condition: Operating -20°C ~ +60°C, storage -40°C ~ +85°C, non-condensing humidity 5–95%
Function & Performance Features
- Dual-channel independent isolation, single module handles two separate measurement loops
- Sink output architecture: External auxiliary power must be connected to safe-side output terminals
- Line Fault Detection (LFD): Real-time diagnosis of transmitter open/short circuit with collective fault signal terminal
- Signal splitter function: Single field input duplicates two isolated analog outputs for redundant DCS/PLC collection
- Fully galvanic isolation between Ex field side and control cabinet safe side, suppresses ground loop interference
- HART transparent pass-through for parameter calibration, remote zero/span adjustment of smart transmitters
- Low power consumption design reduces cabinet heat accumulation for high-density termination board layout
- Hot-swappable module without cutting system loop power
Working Principle
The internal floating isolation power circuit provides isolated 24V power to hazardous area transmitters. Field 4–20mA analog signal and superimposed HART digital signal pass through capacitive/transformer galvanic isolation barriers. On the safe side, the signal circuit converts isolated current into sink-mode analog signal for control system input. Built-in comparator continuously monitors loop current amplitude; abnormal values trigger LFD fault contact output. Isolation circuits block dangerous energy transfer from safe zone to explosive hazardous zone to meet intrinsic safety standards.
Material & Structural Characteristics
- Housing: Flame-retardant black thermoplastic UL94-V0, anti-corrosion industrial grade plastic
- Internal PCB: Double-sided copper-clad circuit board with high isolation creepage distance, reinforced insulation coating
- Terminal Blocks: Spring-cage push-in terminals, tool-free wiring, nickel-plated conductive terminals anti-oxidation
- Structure: Slim 18mm DIN rail snap-on modular design, stacking multiple modules without gap, interlocking side buckles for stable assembly
- No internal cooling fan, full passive heat dissipation structure
Installation Requirements
- Mount on standard 35mm top-hat DIN rail inside non-hazardous control cabinet
- Termination board matching: Compatible with Pepperl+Fuchs H-System 16-position termination base plate, pre-wired system cables to reduce wiring labor
- Wiring separation: Strictly separate Ex-side field cable and safe-side control cable routing, maintain ≥5cm clearance between cable bundles
- Power wiring: Connect redundant 24VDC bus power to module common supply terminals, avoid series connection of multiple barrier power loops
- Grounding: Cabinet protective earth connected to termination board grounding terminal, separate intrinsic safety ground and power ground
- Module spacing: If cabinet ambient temperature exceeds 45°C, reserve ≥5mm gap between adjacent modules for heat dissipation
Typical Application Scenarios
- Petrochemical refinery, natural gas pipeline hazardous area flow/pressure/temperature transmitter signal isolation
- Chemical plant Zone 1/2 explosion-proof measurement control loops with HART smart instruments
- Oil & gas offshore platform SIS safety instrumented system analog signal conditioning
- Pharmaceutical fine chemical explosion-proof production line DCS measurement signal splitting
- Coal mine underground intrinsic safety 4–20mA transmitter signal transmission
Operation & Maintenance Precautions
- Only factory-trained explosion protection certified technicians perform installation, wiring and replacement
- Do not modify internal circuit components; disassembly voids ATEX intrinsic safety certification
- Regular quarterly inspection of terminal wire tightness to prevent loose contact causing signal drift
- Avoid mounting module near high-power frequency converters, transformers to reduce EMI interference
- If LFD fault alarm triggers, first disconnect hazardous area power before checking transmitter wiring short/open faults
- Storage environment must be dust-free, no corrosive gas, avoid direct sunlight exposure
- SK sink output variant cannot source current; confirm PLC analog input supports sink signal before configuration
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