Excellent PLC
Product Description
The Honeywell RM7840L1026 is a microprocessor-based integrated burner control designed for automatically fired gas, oil, or combination fuel single-burner systems. It offers advanced sequencing, flame supervision, diagnostics, and system status indication. It ensures safe and reliable operation, supporting SIL3-capable designs in properly configured safety systems.
Technical Specifications
| Parameter | Specification |
|---|---|
| Power Supply | 120 VAC, 50/60 Hz |
| Power Consumption | 10 W max |
| Operating Temperature | -40°C to 60°C (-40°F to 140°F) |
| Storage Temperature | -40°C to 66°C (-40°F to 150°F) |
| Humidity | 85% RH continuous, non-condensing |
| Weight | 0.7 kg |
| Dimensions | 127 x 127 x 133 mm |
| Flame Failure Response Time | 0.8 or 3.0 seconds (depending on amplifier) |
| Communication | Modbus (optional) |
| Certifications | UL, CSA, FM, SIL3 Capable |
Applications
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Gas burners in industrial heating systems
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Oil-fired burners for boilers and furnaces
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Combination fuel burners in process industries
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Safety-critical combustion systems requiring SIL3 compliance
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Burner systems with advanced diagnostic and monitoring needs
Advantages
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Microprocessor-based reliability with non-volatile memory
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Supports SIL3 safety system designs
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First-out annunciation with optional display modules
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Flexible post-purge timing and valve proving features
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Modular with interchangeable flame amplifiers and accessories
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Diagnostic information including fault history and flame strength
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Remote reset and remote display options available
FAQ
Q1: What is the main function of the RM7840L1026?
A1: It controls and supervises the safe operation of single-burner gas, oil, or combination fuel systems.
Q2: Is the RM7840L1026 SIL3 certified?
A2: It is SIL3 capable when installed in a properly designed safety instrumented system.
Q3: What flame failure response times are supported?
A3: It supports 0.8 or 3.0 seconds, depending on the amplifier used.
Q4: What is the main flame establishing period of this model?
A4: The RM7840L1026 has a 10-second or intermittent main flame establishing period.
Q5: Can it be used with Modbus communication?
A5: Yes, with an optional Modbus module.
Q6: Does it support valve proving?
A6: Yes, it includes valve proving features configurable with optional accessories.
Q7: What is the recommended operating temperature range?
A7: The operating range is -40°C to 60°C.
Q8: Is remote reset available?
A8: Yes, remote reset is possible with an optional module.
Q9: What kind of flame detectors can it work with?
A9: It supports rectification, ultraviolet, and infrared flame detectors, depending on amplifier choice.
Q10: What is the weight and size of the unit?
A10: It weighs 0.7 kg and measures 127 x 127 x 133 mm.
Recommended Related Models
| Model | Flame Failure Response Time | Main Flame Period | Dimensions (mm) | Weight |
|---|---|---|---|---|
| RM7840E | 0.8 or 3.0 sec | 10 or 15 sec | 127 x 127 x 133 | 0.7 kg |
| RM7840G1022 | 0.8 or 3.0 sec | 10 or intermittent | 127 x 127 x 133 | 0.7 kg |
| RM7840L1075 | 0.8 or 3.0 sec | 10 or intermittent | 127 x 127 x 133 | 0.7 kg |
| RM7840L1091 | 0.8 or 3.0 sec | 4 sec | 127 x 127 x 133 | 0.7 kg |
| EC7840L1014 | 0.8 or 3.0 sec | 10 or intermittent | 127 x 127 x 133 | 0.7 kg |
| RM7840M | 0.8 or 3.0 sec | 10 or intermittent | 127 x 127 x 133 | 0.7 kg |
Popular Honeywell Models
| Model | Application | Communication | Dimensions (mm) | Weight |
|---|---|---|---|---|
| RM7800L1087 | Burner Control with KDM | Modbus optional | 127 x 127 x 133 | 0.7 kg |
| RM7800E1012 | Burner Control Basic | Modbus optional | 127 x 127 x 133 | 0.7 kg |
| RM7800G1022 | Burner Control Gas | Modbus optional | 127 x 127 x 133 | 0.7 kg |
| RM7800M1011 | Burner Control Modulating | Modbus optional | 127 x 127 x 133 | 0.7 kg |
| EC7850L1014 | Enhanced Burner Controller | Modbus optional | 127 x 127 x 133 | 0.7 kg |
| RM7823A1011 | Programmer Module | N/A | 127 x 127 x 133 | 0.7 kg |
