Excellent PLC
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Product Overview
The Honeywell RM7840L1075 is a microprocessor-based burner control module designed for the safe and automatic control of gas, oil, or combination fuel single burners. It provides burner sequencing, flame supervision, system status indication, and diagnostics. Part of the SIL 3-capable Honeywell 7800 Series, it is ideal for UL/CSA On/Off, Modulating, and FM/IRI Modulating burner systems.
Technical Specifications
| Parameter | Value |
|---|---|
| Model | RM7840L1075 |
| Power Supply | 120 VAC (+10/-15%), 50/60 Hz |
| Power Consumption | 10 W maximum |
| Maximum Connected Load | 2000 VA |
| Fuse Rating | 15A (Type SC or equivalent, fast blow) |
| Ambient Operating Temp. | -40°C to +60°C |
| Storage Temperature | -40°C to +66°C |
| Relative Humidity | 85% RH continuous, non-condensing |
| Vibration | 0.5G maximum |
| Dimensions | 127 x 127 x 133 mm |
| Weight | 0.7 kg |
| Safety Standard | SIL 3 capable (properly designed SIS) |
| Approvals | UL, CSA, FM, FCC Part 15 Class B |
Applications
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Automatically fired gas, oil, or dual-fuel burners
-
Industrial boilers and heaters
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Process ovens and kilns
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Any critical flame supervision systems requiring SIL 3 compliance
Advantages
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Microprocessor-based precision and reliability
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Easy integration with standard and modulating burner systems
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Built-in diagnostics and LED status indication
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Compatible with optional display and communication modules
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SIL 3 capable for high-integrity safety systems
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Wide operating temperature range and robust environmental ratings
FAQ
Q1: What is the primary use of the RM7840L1075?
A1: It is used to automatically control burner sequencing and flame safety in industrial burners.
Q2: Does it support modulating burners?
A2: Yes, it supports UL/CSA and FM/IRI modulating burner applications.
Q3: What safety level does it achieve?
A3: It is SIL 3 capable when installed in a properly designed safety system.
Q4: Can it operate in cold environments?
A4: Yes, it operates in temperatures as low as -40°C.
Q5: What power supply does it require?
A5: It operates on 120 VAC, 50/60 Hz.
Q6: Is it compatible with remote displays?
A6: Yes, optional remote Keyboard Display Modules are supported.
Q7: How is flame supervision handled?
A7: Through compatible flame amplifiers and detectors connected to the module.
Q8: Does it have diagnostics?
A8: Yes, it includes system status indication and self-diagnostics.
Q9: What is its vibration tolerance?
A9: Up to 0.5G continuous vibration.
Q10: Is it suitable for outdoor installation?
A10: Only if installed in a weather-tight enclosure, as the module itself is not weather-proof.
Recommended Related Models
| Model | Description | Dimensions (mm) | Weight (kg) |
|---|---|---|---|
| RM7840E1016 | 7800 Series Relay Module, E type | 127×127×133 | 0.7 |
| RM7840G1018 | 7800 Series Relay Module, G type | 127×127×133 | 0.7 |
| RM7840M1012 | 7800 Series Relay Module, M type | 127×127×133 | 0.7 |
| RM7800L1075 | 7800 Series Relay Module, L type | 127×127×133 | 0.7 |
| RM7800E1012 | 7800 Series Relay Module, E type | 127×127×133 | 0.7 |
| RM7800G1014 | 7800 Series Relay Module, G type | 127×127×133 | 0.7 |
Popular Honeywell Models
| Model | Description | Dimensions (mm) | Weight (kg) |
|---|---|---|---|
| RM7890A1015 | 7800 Series Burner Control | 127×127×133 | 0.7 |
| RM7895C1014 | Integrated Burner Control, Intermittent | 127×127×133 | 0.7 |
| RM7885A1021 | 7800 Series Relay Module, On-Off | 127×127×133 | 0.7 |
| RM7897A1012 | 7800 Series Relay Module, Oil Burner | 127×127×133 | 0.7 |
| RM7898A1009 | Integrated Burner Controller | 127×127×133 | 0.7 |
| RM7899A1005 | Burner Control Module, Intermittent | 127×127×133 | 0.7 |
