The Honeywell RM7897A1002 burner control manages combustion processes safely and reliably. This unit weighs 0.52 kg and measures 13.5 cm x 10.2 cm x 7.8 cm. It provides flame monitoring, ignition control, and valve actuation functions. The controller contains one microprocessor, two flame amplifiers, and one relay output board. For energy storage, it includes one 470µF capacitor and one backup battery. Consequently, the Honeywell RM7897A1002 retains safety parameters during power interruptions.
Technical Specifications
The table below lists all verified parameters for the Honeywell RM7897A1002. Use this data for your system integration planning.
| Parameter | Value |
|---|---|
| Manufacturer | Honeywell |
| Model | RM7897A1002 |
| Category | Burner Control |
| Weight | 0.52 kg |
| Dimensions (L x W x H) | 13.5 cm x 10.2 cm x 7.8 cm |
| Flame Monitoring | UV or rectification sensors |
| Flame Amplifiers | 2 units |
| Relay Outputs | 6 relay outputs |
| Onboard Components | 1 microprocessor, 2 amplifiers, 1 relay board |
| Energy Storage | 1x 470µF capacitor, 1 backup battery |
| Battery Type | Lithium (non-rechargeable) |
| Battery Life | 5 years typical |
| Power Supply | 120V AC or 240V AC ±15% |
| Power Consumption | 15 VA |
| Flame Response Time | 0.8 to 4 seconds (adjustable) |
| Pre-ignition Timer | 5 to 30 seconds (adjustable) |
| Post-ignition Timer | 5 to 15 seconds (adjustable) |
| Operating Temperature | -20°C to +60°C |
| Storage Temperature | -40°C to +85°C |
Flame Monitoring Features
The Honeywell RM7897A1002 accepts either UV or rectification flame sensors. Two dedicated flame amplifiers process signals from both sensor types. Therefore, you can use this controller with various burner configurations. The flame response time adjusts from 0.8 to 4 seconds. Consequently, you can optimize the controller for different fuel types and combustion chamber sizes.
Timing and Control Functions
This burner control includes adjustable pre-ignition and post-ignition timers. The pre-ignition timer ranges from 5 to 30 seconds for purge cycles. The post-ignition timer spans 5 to 15 seconds for flame stabilization. Hence, the Honeywell RM7897A1002 accommodates a wide variety of burner systems. Six relay outputs control the ignition transformer, fuel valves, and alarm circuits.
Safety and Energy Storage
The Honeywell RM7897A1002 includes a 470µF capacitor for short-term ride-through. This capacitor provides 100 milliseconds of hold-up time during power dips. Additionally, a lithium battery retains safety parameters for up to 5 years. Thus, the controller remembers its configuration even after extended power outages. The battery also maintains the real-time clock for event logging.
Installation and Wiring
You can mount the Honeywell RM7897A1002 on a standard DIN rail. Alternatively, secure it with M4 screws through its four mounting tabs. The unit uses 14-pin and 8-pin terminal blocks for all field connections. Use shielded cables for flame sensor wiring to prevent false signals. The Honeywell RM7897A1002 works seamlessly with the RMS-TSG-TZ-C static trip unit.
Environmental Durability
This burner control operates reliably from -20°C to +60°C. It also withstands 90% relative humidity without condensation. The unit survives vibration up to 1g from 10 to 150 Hz. Therefore, the Honeywell RM7897A1002 suits boiler rooms and industrial heating applications perfectly.
Details
| Weight | 0.2 kg |
|---|---|
| Dimensions | 85 × 65 × 30 mm |
Reviews
There are no reviews yet.