Description
Product Brief Introduction
Rack-mounted safety gateway interface module for industrial fire and toxic gas detection systems, acts as signal bridge between EQP safety controllers and field addressable flame/gas detectors. Realizes bidirectional transmission of detector analog/digital signals, safety alarm interlock logic signal forwarding and system redundant hot standby communication switching, certified SIL 2 safety integrity level for hazardous area process safety systems.
Core Technical Specifications
- Operating Power Supply: 18–30 V DC industrial safety power, rated power consumption 15 W maximum
- Communication Bus: EQP proprietary local operating network loop, Modbus RTU secondary communication port
- Supported Field Detector Signals: 4–20mA analog gas signals, digital addressable flame detector bus signals
- Relay Output Capacity: 4 groups of 5A rated potential-free alarm relay contacts
- On-Board Storage: 8MB flash memory for historical alarm and fault data logging
- Physical Form Factor: Standard 6U rack plug-in card
- Module Dimensions: 182mm × 128mm × 22mm
- Net Weight: 0.14 kg
- Module Protection Grade: IP20 (cabinet installation only)
- Certifications: SIL 2 (IEC 61508), ATEX Zone 2, FM Class I Div 2, UL, CE
- Operating Temperature Range: -20°C ~ +55°C
Function Features
- Bidirectional EQP bus signal isolation transmission, electrical isolation between controller side and field hazardous detector side
- Real-time data logging of gas concentration, flame state, equipment fault and alarm events, storage of minimum 10,000 historical records
- Automatic hot standby switching for dual redundant EQP controllers, bumpless signal transfer without alarm loss
- Four independent programmable relay alarm output channels, configurable for gas high/low concentration, flame loss, system fault classification
- Front panel digital LED numeric display for real-time loop bus status, independent LED indicators for each relay channel
- Built-in loop short-circuit and open-circuit automatic detection, fault location code output to upper controller
- Secondary Modbus RTU communication port for connecting DCS/PLC upper monitoring systems
Performance Parameters
- Bus Signal Transmission Delay: < 15 ms
- Relay Contact Mechanical Service Life: Minimum 100,000 switching cycles under rated load
- Electrical Isolation Voltage Between Hazardous/Safe Circuits: 2500V AC
- Data Logging Storage Retention Time: ≥ 10 years without external power supply
- Maximum Supported Field Detector Quantity: 32 addressable detectors per EQP loop channel
Material Composition
- Module Front Panel: Black extruded aluminum alloy with corrosion-resistant anodic oxidation coating
- Internal PCB: Multi-layer FR4 high noise suppression circuit board with full ground shielding
- Relay Components: Industrial-grade sealed safety signal relays with gold-plated contacts
- Rear Connector: Gold-plated multi-pin industrial rack connector with anti-vibration locking buckle
Structural Characteristics
- Vertical rack plug-in card structure, compatible with Eagle Quantum series standard controller rack backplane
- Front panel integrated digital status display, four relay channel indicator lights, manual fault reset button
- Independent wiring terminal area at rear of rack connector, separated signal and power pin layout
- Internal multi-layer shielding compartment for hazardous signal isolation circuit, meets intrinsic safety circuit separation requirements
Working Principle
The module receives addressable digital signals and 4–20mA analog gas concentration signals from field flame/gas detectors installed in hazardous zones via isolated EQP bus circuit; internal microcontroller processes signal data, stores real-time status and alarm records in flash memory, transmits standardized safety data to primary EQP safety controller; simultaneously receives interlock command signals from controller and drives four independent relay contact outputs to trigger external shutdown, ventilation and alarm equipment; when dual redundant controllers are configured, the module automatically detects master controller fault and switches signal transmission to standby controller without signal interruption.
Advantage Highlights
- SIL 2 safety certified single-module design, meets process safety hazardous area mandatory standards
- Built-in complete historical event logging function, supports post-incident safety accident traceability
- Automatic redundant controller bumpless switching improves overall fire & gas system availability
- Integrated analog and digital signal compatibility, supports full range of Det-Tronics EQ series detectors
- Compact rack card structure reduces overall safety system cabinet space occupation
Applicable Industries
Offshore oil & gas platforms, onshore refineries, chemical processing plants, LNG storage terminals, pharmaceutical hazardous material workshops, power plant hydrogen storage areas, mining toxic gas monitoring stations
Installation Requirements
- Install inside non-hazardous safe-area control cabinet only, cannot be directly mounted in Zone 0/1 hazardous areas
- Use intrinsically safe shielded blue cable for EQP bus wiring, comply with ATEX intrinsic safety wiring specifications
- Maintain ≥ 30mm gap between adjacent rack modules for heat dissipation
- Cabinet protective earth wire connected to module rack ground terminal with 2.5mm² copper conductor
- Maximum bus wiring length between module and field detectors limited to 1000 meters
Usage Precautions
- Do not open module housing in hazardous classified locations; disconnect all power before maintenance disassembly
- Intrinsically safe circuit wiring must be separated from non-intrinsic safe power wiring with minimum 50mm spacing
- Do not connect voltage exceeding 30V DC to field bus terminals, will damage intrinsic safety isolation circuit
- Download historical log data every 90 days for long-term continuous operation systems to avoid memory overflow
- If bus fault code persists, inspect field detector cable short circuit first before module replacement
Reviews
There are no reviews yet.