RM7890, RM7895 100 Vac
FEATURES
• Safety features:
— Closed loop logic test.
— Dynamic AMPLI-CHECK™ circuitry.
— Dynamic input check.
— Dynamic safety relay test.
— Dynamic self-check logic.
— Expanded safe-start check.
— Internal hardware status monitoring.
— Tamper resistant timing and logic.
• Access for external electrical voltage checks. Application
flexibility.
• Dependable, long-term operation provided by microcom-
puter technology.
• Five light emitting diodes (LEDs) for sequence informa-
tion.
• Interchangeable type plug-in flame amplifiers.
• Nonvolatile memory retains history files and sequencing
status after loss of power.
• Selectable relight or lockout on loss of flame.
OPTIONAL FEATURES
• Communication interface capability.
• First-out annunciation and system diagnosis are provided
by a two-row by 20-column display located on the option-
al keyboard display module (KDM).
• Local or remote annunciation operation and fault informa-
tion.
• Remote reset.
• Burner controller data using S7800 Keyboard Display:
— Flame signal strength.
— Hold status.
— Lockout/alarm status.
— Sequence status.
— Sequence time.
— Total cycles of operation.
— Total hours of operation.
• Fault history providing the six most recent faults:
• Cycles of operation at the time of the fault.
• 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.
— Diagnostic information:
• Device type.
• Flame amplifier type.
• Flame failure response time. Manufacturing code.
• On/Off status of all digital inputs and outputs.
• Software revision and version of RM7890/ RM7895
and optional Keyboard Display Module.
• Status of configuration jumpers.
SPECIFICATIONS
Electrical Ratings:
See Table 2.
Voltage and Frequency:
100 Vac (+10/-15%), 50/60 Hz (± 10%).
Power Dissipation: 10W maximum.
Maximum Total Connected Load: 2000 VA.
Fusing Total Connected Load: 15A maximum, type SC or
equivalent.
Environmental Ratings:
Ambient Temperature:
Operating: -40°F to 140°F (-40°C to 60°C).
Storage: -60°F to 150°F (-51°C to 66°C).
Humidity: 85% relative humidity continuous, noncondensing.
Vibration: 0.5G environment.
Dimensions:
See Fig. 1 and 2.
Weight:
RM7890, RM7895 with Dust Cover: 1 lb, 13 oz (829 grams)
unpacked.
Approvals:
cULus Underwriters Laboratories Inc. Listed: File No. MP268.
ANSI/UL 60730-2-5 / CSA C22.2 No. 60730-2-5 -
Automatic Electrical Controls for Household and Similar
Use, Part 2-5: Particular Requirements for Automatic
Electrical Burner Control Systems.
FM: Factory Mutual Approved: Report No. 1V9A0.AF.
EAC: TC N RU д-US.Aи3O.B.04013
Exida: IEC/EN 61508:2010 Parts 1-7, SIL 3 capable.
FCC Federal Communications Commission: Part 15, Class B,
Emissions.
Swiss Re (formerly Industrial Risk Insurers): Acceptable.
Mounting:
Q7800A Wiring Subbase for panel mounting.
Q7800B Wiring Subbase for wall or burner mounting.
Required Components:
Plug-in Flame Signal Amplifier (See Table 4).
ST7800A Purge Timer (for RM7895 only).
Accessories:
Keyboard Display Modules (KDM)
S7800A1142 2-Line VFD Keyboard Display Module
S7800A2142 4-line LCD keyboard display module
Communications
Modbus using S7810M1003 Modbus Module
or
configuring the S7800 Keyboard Display.
S7810A1009 Data ControlBus™ Module (if no KDM used).
Miscellaneous
A7800A1002 7800 SERIES Tester
S7820A1007 Remote Reset Module
203541 Data ControlBus Connector, 5-wire
203765 Remote Display Mounting Bracket
221729 Dust Cover, Relay Module
32-00216-01 2
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