Product Overview
Table Of Contents
- Application
- Features
- Optional Features
- Specifications
- Principal Technical Features
- Safety Provisions
- Internal Hardware Status Monitoring
- Closed Loop Logic Test
- Dynamic AMPLI-CHECKTM Circuitry
- Dynamic Input Check
- Dynamic Safety Relay Test
- Dynamic Self-Check Safety Circuit
- Expanded Safe-Start Check
- Off Cycle (Standby) Flame Signal Check
- Tamper Resistant Timing and Logic
- Verified Spark Termination
- First-Out Annunciation and Self- Diagnostics
- Interlock Requirements (RM7895 Only)
- Installation
- Wiring
- Assembly
- Operation
- Initiate
- Standby
- Static Checkout
- Checkout
- Equipment Recommended
- Checkout Summary
- Preliminary Inspection
- Flame Signal Measurement
- Initial Lightoff Check for Proved Pilot
- Initial Lightoff Check for Direct Spark Ignition (DSI)
- Pilot Turndown Test (All Installations Using a Pilot)
- Ignition Interference Test (All Flame Rods)
- To Eliminate Ignition Interference
- Flame Signal with Hot Combustion Chamber (All Installations)
- Safety Shutdown Tests (All Installations)
- Troubleshooting
RM7890; RM7895 100 VAC 7800 SERIES RELAY MODULES
9 66-1195—01
Fig. 3. Internal block diagram of the RM7890 (see Fig. 5 for detailed wiring instructions).
CONFIGURATION
JUMPERS
MICROCOMPUTER
RESET
PUSH-
BUTTON
STATUS LEDs
SAFETY RELAY
CIRCUIT
POWER SUPPLY
OPTIONAL KEYBOARD
DISPLAY MODULE
PLUG-IN
FLAME
AMPLIFIER
RELAY
DRIVE
CIRCUIT
CONTROL
POWER
TEST
JACK
REMOTE
RESET
DDL
DDL
COMMUNICATIONS
INDICATES FEEDBACK SENSING
TO RELAY STATUS FEEDBACK
AND LINE VOLT INPUTS
FIELD WIRING
INTERNAL WIRING
IGNITION
PILOT
MAIN VALVE
1K
RELAY
STATUS
FEEDBACK
AND LINE
VOLTAGE
INPUTS
LIMITS CONTROLLER
1K1 2K1
100 Vac
FLAME SIGNAL
TEST
PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
RS485
1
2
3
L1
(HOT)
L2
3
6
4K2
4K1
2K2
10
8
9
4K
3K
2K
F
G
1
ALARM
3K1
4
L2
1
M32660