a microprocessor based integrated burner control for
automatically fired gas, oil, or combination fuel single burner
applications. A Relay Module, Subbase, Amplifier and Purge
Card are required to complete the system. Options include
Keyboard Display Module (KDM), Modbus™ Module, DATA
CONTROLBUS MODULE™, Remote Display mounting, and
First-Out Expanded Annunciator.
The Relay Module is programmed to provide a level of safety,
functional capability and features beyond the capacity of
Automatic burner sequencing
System status indication
System or self-diagnostics
RM7896 provides 15 seconds postpurge.
Closed loop logic test.
Dynamic input check.
Dynamic safety relay test.
Dynamic self-check logic.
Internal hardware status monitoring.
Tamper resistant timing and logic.
Access for external electrical voltage checks.
Airflow switch check feature (RM7895B,D/RM7896B,D).
Communication interface capability using Modbus.
Delayed main valve (EC7895C; RM7895C,D;RM7896C,D; RM7897C)
The Relay Module provides either 0.8 or 3 second Flame Failure Response Time (FFRT), depending on the amplifier selected.
Dependable, long-term operation provided by microcomputer technology.
First-out annunciation and system diagnostics are provided by a 2 row by 20 column Vacuum FluorescentDisplay (VFD) located on the optional KeyboardDisplay Module.
First-out expanded annunciation with 26 Light EmittingDiodes (LED) for limits and interlocks (optional).
Five (LED) for sequence information, see Fig. 1.
Two function Run/Test Switch (EC7895C; RM7895C,D; RM7896C,D; RM7897;RM7898).
Interchangeable plug-in flame amplifiers.
Local or remote annunciation of EC7895/RM7895 andRM7896 operation and fault information (optional).
Nonvolatile memory; retains history files andsequencing status after loss of power.
Remote reset (optional).
Selectable recycle or lockout on loss of airflow.
Selectable recycle or lockout on loss of flame(RM7895C1053 does not have the selectable option. Itlocks out on loss of flame.)
Shutter drive output.
Burner controller data (optional):
Expanded annunciator status.
Flame signal strength.
Total cycles of operation.
Total hours of operation.
Fault history providing for the six most recent
Cycles of operation at the time of the fault.
Expanded annunciator data at the time of the
Fault message and code.
Hours of operation at the time of the fault.
Sequence status at the time of the fault.
Sequence time at the time of the fault.
Flame amplifier type.
Flame failure response time.
On/Off status of all digital inputs and outputs.
Selected prepurge time.
Software revision and version of EC7895/RM7895/RM7896 and optional Keyboard Display Module.
Status of configuration jumpers
Shipping Weight: 2 Kg