A DCS Q Co., Ltd. - PLC and DCS Industrial Control Equipment Wholesale
Smart Burner Sequencing and Flame Safety Control for Industrial Applications
The Honeywell RM7840M1017 Relay Module is a microprocessor-based burner management controller designed for safe sequencing, flame supervision, and relay control in industrial combustion systems. As part of the Honeywell 7800 Series, it delivers reliable automation for single-burner applications using gas, oil, coal, or combination fuels, with integrated diagnostics and configurable combustion logic.
Built for modern industrial heating systems, this module replaces traditional electromechanical burner controls with a solid-state architecture that improves reliability, fault visibility, and operational consistency. It is widely used in boilers, furnaces, thermal processing units, and process heating systems where stable combustion control and safety interlocks are critical.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | Honeywell |
| Model Number | RM7840M1017 |
| Series | 7800 Series |
| Product Type | Relay / Burner Control Module |
| Control Type | Microprocessor-based burner sequencing |
| Application | Industrial burner management systems |
| Fuel Compatibility | Gas, oil, coal, and combination fuel burners |
| Power Supply | 120 VAC, 50/60 Hz |
| Pilot Flame Establishing Period | 4 sec or 10 sec |
| Main Flame Establishing Period | 10 sec or intermittent operation |
| Post Purge | 15 seconds |
| Control Features | Run/Test switch, LED sequence indicators |
| Safety Functions | Flame supervision, interlocks, lockout protection |
| Diagnostics | Built-in self-diagnostics and fault history |
| Memory Type | Non-volatile memory |
| Mounting Type | Plug-in module with Q7800 subbase |
| Operating Temperature | -40°C to +60°C (typical industrial range) |
| Approx. Dimensions | ~127 × 127 × 133 mm |
| Approx. Weight | ~0.7–1.0 kg (configuration dependent) |
