Honeywell R7849A1023 Ultraviolet Flame Amplifier
he Honeywell R7849A1023, also cataloged as the R7849A1023 Ultraviolet Flame Amplifier, operates as a dedicated hardware component for ultraviolet flame signal amplification and safety shutdown execution within 7800 Series safety relay module platforms.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | R7849A1023 |
| Brand | Honeywell |
| Origin | Standard Industrial Automation Specification |
| Weight | 1 kg |
| Dimensions | Standard 7800 Series plug-in module footprint |
| Operating Temp | 0 to 60 deg C |
| Power Consumption | Powered via 7800 Series relay module backplane bus |
| Type | Ultraviolet |
| Flame Failure Response Time | 3 sec |
| Self Checking | None (standard) |
| Use With Primary Safety Control | 7800 SERIES Relay Modules |
| Use With Flame Sensor | Gas, Oil: Minipeeper C7027A, C7035A, C7044 |
| Color | Purple |
Burner Control & Channel-to-Channel Signal Isolation
In safety instrumented burner management systems, flame amplification modules interface directly with ultraviolet sensors and safety relay modules. The unit incorporates robust channel-to-channel isolation and filtered signal processing circuits to prevent electromagnetic interference and ground loop currents from corrupting the low-level ultraviolet sensor feedback loop. This electrical separation guarantees deterministic flame failure response times and prevents common-mode voltage transients from triggering spurious burner shutdowns.
Frequently Asked Questions
Q: Can the R7849A1023 flame amplifier be hot-swapped while the 7800 Series relay module is energized?
A: No, plugging or unplugging the amplifier module while the system is powered can cause internal bus voltage spikes or logic errors on the primary safety control backplane. Power must be isolated prior to module extraction.
Q: What is the operational impact of selecting a non-self-checking ultraviolet amplifier variant?
A: The standard non-self-checking design relies on direct ultraviolet signal rectification without shutter-based optical self-checking, requiring application compliance with local safety codes and periodic manual sensor verification.
Field Installation Guidelines
- Module Insertion: Align the R7849A1023 plug-in module carefully with the designated card slot on the 7800 Series relay module. Push evenly until the chassis seats firmly into the backplane connectors without applying excessive mechanical force.
- Sensor Wiring & Shielding: Connect compatible Minipeeper sensors (C7027A, C7035A, C7044) using shielded coaxial or twisted-pair wiring. Ground the cable shield exclusively at the control cabinet earth termination point to protect against electrical noise pickup.
- Verification Checks: Verify that the ultraviolet sensor optical path is clean and aligned correctly with the burner flame envelope. Confirm that flame signal voltage levels meet manufacturer thresholds during initial burner light-off.
Honeywell R7849A1023 Ultraviolet Flame Amplifier
Honeywell R7849A1023 Ultraviolet Flame Amplifier
he Honeywell R7849A1023, also cataloged as the R7849A1023 Ultraviolet Flame Amplifier, operates as a dedicated hardware component for ultraviolet flame signal amplification and safety shutdown execution within 7800 Series safety relay module platforms.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | R7849A1023 |
| Brand | Honeywell |
| Origin | Standard Industrial Automation Specification |
| Weight | 1 kg |
| Dimensions | Standard 7800 Series plug-in module footprint |
| Operating Temp | 0 to 60 deg C |
| Power Consumption | Powered via 7800 Series relay module backplane bus |
| Type | Ultraviolet |
| Flame Failure Response Time | 3 sec |
| Self Checking | None (standard) |
| Use With Primary Safety Control | 7800 SERIES Relay Modules |
| Use With Flame Sensor | Gas, Oil: Minipeeper C7027A, C7035A, C7044 |
| Color | Purple |
Burner Control & Channel-to-Channel Signal Isolation
In safety instrumented burner management systems, flame amplification modules interface directly with ultraviolet sensors and safety relay modules. The unit incorporates robust channel-to-channel isolation and filtered signal processing circuits to prevent electromagnetic interference and ground loop currents from corrupting the low-level ultraviolet sensor feedback loop. This electrical separation guarantees deterministic flame failure response times and prevents common-mode voltage transients from triggering spurious burner shutdowns.
Frequently Asked Questions
Q: Can the R7849A1023 flame amplifier be hot-swapped while the 7800 Series relay module is energized?
A: No, plugging or unplugging the amplifier module while the system is powered can cause internal bus voltage spikes or logic errors on the primary safety control backplane. Power must be isolated prior to module extraction.
Q: What is the operational impact of selecting a non-self-checking ultraviolet amplifier variant?
A: The standard non-self-checking design relies on direct ultraviolet signal rectification without shutter-based optical self-checking, requiring application compliance with local safety codes and periodic manual sensor verification.
Field Installation Guidelines
- Module Insertion: Align the R7849A1023 plug-in module carefully with the designated card slot on the 7800 Series relay module. Push evenly until the chassis seats firmly into the backplane connectors without applying excessive mechanical force.
- Sensor Wiring & Shielding: Connect compatible Minipeeper sensors (C7027A, C7035A, C7044) using shielded coaxial or twisted-pair wiring. Ground the cable shield exclusively at the control cabinet earth termination point to protect against electrical noise pickup.
- Verification Checks: Verify that the ultraviolet sensor optical path is clean and aligned correctly with the burner flame envelope. Confirm that flame signal voltage levels meet manufacturer thresholds during initial burner light-off.
