I. Product Brief Description
The Alstom (formerly Alstom Energy Business, now belonging to GE Grid Solutions) boiler combustion safety flame detection main control unit is used in conjunction with the DFI-150-0003 flame probe; it is a dedicated flame signal conditioning, logic judgment, and safety interlock module for thermal power boilers and gas burners. It collects ultraviolet / infrared / ion current flame signals, and can promptly determine the presence of flame and the stability of the combustion condition. In case of flameout, it quickly triggers the fuel cut-off and furnace cleaning safety protection circuits. The panel is equipped with buttons and status indicator lights. It is installed on a DIN rail cabinet. It is a core safety spare part of the thermal power plant boiler furnace safety monitoring system (FSSS).
Key Technical Parameters Table
Parameter Item Technical Indicator
Rated Power Supply Voltage DC24V (18~36VDC wide voltage compatibility); Maximum Working Current 1.2A
Overall Power Consumption ≤28W
Type of Flame Signal Input Universal access for UV, IR, ion current, and visible light flame sensor signals
Analog Input Channels 6 channels of 4~20mA analog input; 3 channels of 4~20mA output
Switching Quantity Contact Output 3 channels of passive relay contacts; Contact Capacity: 250VAC 5A / 30VDC 5A
Communication Interface RS485, Modbus RTU standard protocol
Flame Detection Response Time <200ms; Flame Out Trip Delay can be set by software from 0.1 to 10s
Measurement Accuracy Flame Intensity Detection Accuracy ±1% FS
Panel Indicators POWER power supply, FLAME flame presence, REL relay output, FAULT fault four-channel LED indicators + operation keys
Installation Method 35mm standard DIN rail snap-in installation
Overall Dimensions 90mm × 35mm × 110mm
Overall Weight 280g
Operating Temperature Range -20℃ ~ +60℃
Storage Temperature Range -40℃ ~ +85℃
Protection Grade IP20 (used in control cabinet)
Insulation Voltage Rating 2500Vrms Electrical Isolation
Compliance Standards CE, UL61010, IEC61000 Industrial Electromagnetic Compatibility Specifications
Core Product Performance
Support for Multiple Types of Flame Signals
Automatically adapts to various flame detector waveforms of boilers, filters out interference signals caused by high-temperature radiation, dust, and vibration in the furnace, with extremely low false alarm and missed alarm probabilities, and stable determination of combustion status;
Furnace Safety Interlock Closed-loop Control
During normal combustion, maintains the fuel valve open; once the flame is detected to be extinguished, immediately cuts off the gas/oil valves, synchronously triggers the furnace cleaning program to prevent the accumulation of flammable gas and explosion, meeting the requirements of boiler safety specifications;
Local Parameter Configuration + Remote Monitoring
Panel keys can locally set flame threshold, flame out delay, output logic; connected to the power plant DCS system through Modbus bus, upload flame intensity, operation status, and fault alarm information;
Complete Hardware Self-Diagnosis Function
Continuous self-checks for probe breakage, circuit short circuit, power anomaly, module internal faults, fault codes are stored and remembered, facilitating troubleshooting during shutdown maintenance;
Three-Defense Reinforced Industrial Design
The circuit board is fully coated with three-defense treatment, capable of withstanding high temperatures, dust, electromagnetic interference, and slight vibration in the power plant, supporting 7×24-hour continuous operation for long-term years;
Modular and Quick Replacement
The pins and wiring definitions of the same series of hardware are completely universal, after a fault, it can be directly unplugged and replaced without re-tuning parameters, shortening the boiler shutdown maintenance time.
Application Domains
Flame Monitoring for FSSS Furnace Safety Monitoring System of Coal/Gas-fired Boilers in Thermal Power Plants;
Safety Control of Thermal Power Generation, Waste Heat Boiler, Industrial Kiln Burner;
Flame Interlock Protection for Heating Furnaces, Cracking Furnaces in Petrochemical and Refining Areas;
Flame State Monitoring for Ignition in Pre-combustion Chambers of Gas Turbines;
Safety Monitoring of Garbage Incineration Power Plants, Biomass Boilers;
Scenarios for Renovation and Replacement of Old Alstom Boiler Control Systems.
V. List of Main Models of the Same Series of EPSD
EPSD-0603: Standard General Model, Mainly标配 for thermal power plant boilers (This model)
EPSD-0601： Compact Economical Model， Only basic flame detection， no analog output
EPSD-0605： Redundant Dual-Channel Flame Input Version， Redundant Safety Configuration for Large-scale Power Plant Boilers EPSD-0700: Upgraded to the new generation model, supporting IEC61850 Ethernet communication and fault recording storage
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