Product Overview

SPECIFICATION DATA
66-2028-04
SIL
3
Capable
7800 SERIES
RM7800E,G,L,M Relay Module
APPLICATION
The Honeywell RM7800 is a microprocessor based integrated
burner control for automatically fired gas, oil or combination
fuel single burner applications. The RM7800 system consists
of a Relay Module, Keyboard Display Module, Subbase,
Amplifier, and Purge Card. Options include Modbus™ Module,
DATA CONTROLBUS MODULE™, Remote Display Mounting,
and First-Out Expanded Annunciator.
The RM7800 is programmed to provide a level of safety,
functional capability and features beyond the capacity of
conventional controls.
Functions provided by the RM7800 include automatic burner
sequencing, flame supervision, system status indication,
system or self-diagnostics and troubleshooting.
The RM7800L1087 offers the following setup features:
• Post Purge time adjustable up to 60 minutes, shipped with
15 second post purge.
• Valve Proving features including:
— VPS Test Time
— When (Before, After, Split, or Both)
FEATURES
• Safety features:
— Interlock check.
— Closed loop logic test.
— Dynamic AMPLI-CHECK™.
— Dynamic input check.
— Dynamic safety relay test.
— Dynamic self-check logic.
— Expanded safe-start check.
— High Fire Purge Switch test.
— Internal hardware status monitoring.
— Low Fire Start Switch test.
— Tamper resistant timing and logic.
• Access for external electrical voltage checks.
• Application flexibility.
• Provides 0.8 to 3.0 second Flame Failure Response
Time (FFRT), depending on amplifier selected.
• Communication interface capability through
Modbus™.
• Dependable, long-term operation provided by
microcomputer technology.
• First-out annunciation and system diagnostics
provided by 2 row by 20 column Vacuum Fluorescent
Display (VFD) located in the Keyboard Display Module.
• First-out expanded annunciation with 26 Light Emitting
Diodes (LEDs) for limits and interlocks (optional).
• Five sequence information LEDs, see Fig. 1.
• Five function Run/Test Switch.
• Interchangeable plug-in flame amplifiers.
• Local or remote annunciation of operation and fault
information through the Keyboard Display.
• Nonvolatile memory for retaining history files and
sequencing status after loss of power.
• Remote reset (optional).
• Burner controller data:
— Sequence status.
— Sequence time.
— Hold status.
— Lockout/alarm status.
— Flame signal strength.
— Expanded annunciator status.
— Total cycles of operation.
— Total hours of operation.
— Fault history of six most recent faults:
• Cycles of operation at time of fault.
• Expanded annunciator data at time of fault.
• Fault message and code.
• Hours of operation at time of fault.
• Sequence status at time of fault.
• Sequence time at time of fault.
— Diagnostic information:
• Device type.
• Flame amplifier type.
• Flame failure response time.
• Manufacturing code.
• On/Off status of all digital inputs and outputs.
• Selected prepurge time.
• Software revision and version of RM7800 and
Keyboard Display Module.
• Status of configuration jumpers.
• Status of Run/Test Switch.