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
25 66-1195—01
Diagnostic Information Index
The relay module with the optional KDM can monitor input/
output terminals and can display the status of the terminal on
the KDM display (for example, Pilot Valve T8 1<); see S7800
Keyboard Display Module specification, form 65-0090. A
complete terminal description and terminal number are
provided. The display shows the actual status of the terminal.
If voltage is detected at the terminal, 1 is displayed; but if
voltage is not present at the terminal, 0 is displayed.
Historical Information Index
The relay module has nonvolatile memory that allows it to
retain historical information for the six most recent lockouts.
Each of the six lockout files retains the cycle when the fault
occurred, the hour of operation when the fault occurred, and
the fault message and burner status when the fault occurred.
The historical information can be viewed by the optional
S7800 KDM.