Honeywell RM7888A1019 Primary Burner Control
The Honeywell RM7888A1019, also cataloged as the RM7888A Burner Control Module, operates as a dedicated hardware component for microprocessor-based burner management and PLC-adaptable primary flame control execution within 7800 Series burner control platforms.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | RM7888A1019 |
| Brand | Honeywell |
| Origin | USA |
| Weight | 0.7 kg (1 lb 10 oz) |
| Dimensions | 127 mm x 127 mm x 133 mm (with Q7800A) / 155 mm (with Q7800B) |
| Operating Temp | -40 deg C to +60 deg C |
| Power Consumption | 10 W nominal |
| Supply Voltage | 120 VAC (+10%, -15%) |
| Frequency | 50 Hz / 60 Hz (+/-10%) |
| Application | Primary Control - PLC Adaptable |
| Pilot Flame Establishing Period | 4 sec |
| Main Flame Establishing Period | 15 sec |
| Pilot Type | Selectable |
| Required Subbase | Q7800A or Q7800B Universal Wiring Subbase |
| Required Flame Amplifier | R7847, R7848, R7849, R7851, R7852, R7861, or R7886 |
| Vibration Tolerance | 0.5 G environment |
| Approvals | CSA Certified, FM Approved, UL Listed |
Channel-to-Channel Isolation & DCS Flame Loop Signal Interfacing
The Honeywell RM7888A1019 incorporates galvanic isolation barriers between high-voltage line control inputs and internal microprocessor logic buses. When integrated into distributed control system (DCS) architectures or programmable logic controllers (PLCs), the module maintains signal integrity across the flame signal detection loop. Dynamic self-checking amplifier circuits isolate channel-to-channel interference while continuously validating flame sensor current. Standard 4-20 mA HART loop protocol adapters and remote communication modules attach via the 7800 Series control interface to broadcast flame signal strength, diagnostic sequence status, and lock-out fault codes directly to plant control networks without introducing ground loop hum or stray voltage offset into the safety relay circuit.
Frequently Asked Questions
Q: Can the Honeywell RM7888A1019 be installed or swapped while the wiring subbase is energized?
A: No. Power to the subbase must be disconnected prior to inserting or removing the RM7888A1019 module. Hot-swapping burner primary controls under electrical load can arc subbase terminal contacts and damage internal solid-state relay logic.
Q: What amplifiers are compatible with this burner control module?
A: The RM7888A1019 requires a 7800 Series flame signal amplifier. Fully compatible models include the R7847, R7848, R7849, R7851, R7852, R7861, and R7886 plug-in amplifiers.
Q: How does the unit interface with external PLC automation architectures?
A: The RM7888A1019 provides discrete terminal handshaking for PLC adaptability, allowing higher-level controllers to monitor operating limits, cycle state sequences, and lockout status via relay contact switching or dedicated communication interfaces.
Field Installation Guidelines
Mount the RM7888A1019 securely into a compatible Q7800A or Q7800B Universal Wiring Subbase installed within a NEMA-rated enclosure. Ensure power supply lines (120 VAC) are fully de-energized prior to seating the module pins into the subbase receptacle.
All flame signal wiring must utilize shielded cables, routed separately from high-voltage spark ignition lines and motor leads to prevent capacitive coupling and signal noise. Ensure the wiring subbase chassis ground terminal is bonded to system safety earth with a low-impedance conductor. Keep high-voltage field wiring within specified conduit runs and maintain terminal screw torque values between 0.8 Nm and 1.1 Nm.
Honeywell RM7888A1019 Primary Burner Control
Honeywell RM7888A1019 Primary Burner Control
The Honeywell RM7888A1019, also cataloged as the RM7888A Burner Control Module, operates as a dedicated hardware component for microprocessor-based burner management and PLC-adaptable primary flame control execution within 7800 Series burner control platforms.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | RM7888A1019 |
| Brand | Honeywell |
| Origin | USA |
| Weight | 0.7 kg (1 lb 10 oz) |
| Dimensions | 127 mm x 127 mm x 133 mm (with Q7800A) / 155 mm (with Q7800B) |
| Operating Temp | -40 deg C to +60 deg C |
| Power Consumption | 10 W nominal |
| Supply Voltage | 120 VAC (+10%, -15%) |
| Frequency | 50 Hz / 60 Hz (+/-10%) |
| Application | Primary Control - PLC Adaptable |
| Pilot Flame Establishing Period | 4 sec |
| Main Flame Establishing Period | 15 sec |
| Pilot Type | Selectable |
| Required Subbase | Q7800A or Q7800B Universal Wiring Subbase |
| Required Flame Amplifier | R7847, R7848, R7849, R7851, R7852, R7861, or R7886 |
| Vibration Tolerance | 0.5 G environment |
| Approvals | CSA Certified, FM Approved, UL Listed |
Channel-to-Channel Isolation & DCS Flame Loop Signal Interfacing
The Honeywell RM7888A1019 incorporates galvanic isolation barriers between high-voltage line control inputs and internal microprocessor logic buses. When integrated into distributed control system (DCS) architectures or programmable logic controllers (PLCs), the module maintains signal integrity across the flame signal detection loop. Dynamic self-checking amplifier circuits isolate channel-to-channel interference while continuously validating flame sensor current. Standard 4-20 mA HART loop protocol adapters and remote communication modules attach via the 7800 Series control interface to broadcast flame signal strength, diagnostic sequence status, and lock-out fault codes directly to plant control networks without introducing ground loop hum or stray voltage offset into the safety relay circuit.
Frequently Asked Questions
Q: Can the Honeywell RM7888A1019 be installed or swapped while the wiring subbase is energized?
A: No. Power to the subbase must be disconnected prior to inserting or removing the RM7888A1019 module. Hot-swapping burner primary controls under electrical load can arc subbase terminal contacts and damage internal solid-state relay logic.
Q: What amplifiers are compatible with this burner control module?
A: The RM7888A1019 requires a 7800 Series flame signal amplifier. Fully compatible models include the R7847, R7848, R7849, R7851, R7852, R7861, and R7886 plug-in amplifiers.
Q: How does the unit interface with external PLC automation architectures?
A: The RM7888A1019 provides discrete terminal handshaking for PLC adaptability, allowing higher-level controllers to monitor operating limits, cycle state sequences, and lockout status via relay contact switching or dedicated communication interfaces.
Field Installation Guidelines
Mount the RM7888A1019 securely into a compatible Q7800A or Q7800B Universal Wiring Subbase installed within a NEMA-rated enclosure. Ensure power supply lines (120 VAC) are fully de-energized prior to seating the module pins into the subbase receptacle.
All flame signal wiring must utilize shielded cables, routed separately from high-voltage spark ignition lines and motor leads to prevent capacitive coupling and signal noise. Ensure the wiring subbase chassis ground terminal is bonded to system safety earth with a low-impedance conductor. Keep high-voltage field wiring within specified conduit runs and maintain terminal screw torque values between 0.8 Nm and 1.1 Nm.
