Honeywell S7800A User Manual

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7800 SERIES
S7800A Keyboard Display Module
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PRODUCT DATA
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The KDM provides local or remote annunciation of operation
and fault information, remote reset, report generation, burner
control data and diagnostic information. The KDM is part o
f
th
e 7800 SERIES of microprocessor-based burner controls for
gas, oil, coal or combination fuel single burner applications.
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The 7800 SERIES is programmed to provide a level of safety,
functional capabilities and features beyond the capacity of
conventional controls.
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The S7 800A1001 KDM Series 5 offers the followin g technical
advancements to the 7800 SERIES devices:
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Series 1-4
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Series 5
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APPLICATION
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The S7800A Keyboard Display Module (KDM) provides
current system status along with first-out annunciation and
system d iagnosis usin g a two-row by twenty-column readou t.
• Compatible with installed Honeywell
78 00 SERIES
systems.
• A three screen two-row by twenty-column readout set of
"Call Service" (Business Card) alpha/numeric directions
can be displayed
in ste ad of the st andard lockou t display
message. (Pa ss Code protected feature). T his "bu siness
card" can be cloned to other displays to save setup time .
• Enable ModBus Communication feature.
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The Business Card (Call Service) can be made up using:
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• Capital letters (A through Z).
• Lower case letters (a through z).
• Numbers (1 through 0).
• Symbols (!, @, #, $,%, etc.).
• Spanish symbols.
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Programming can be done with the S7800 KDM mounted on a
780
0 SERIES Relay Module or with a 13 Vdc power source
connected to the KDM through the 203541 5-wire connector.
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Since your Business Card (Call Service) S7800A1001 will be
left at the job site, programming your personal three-number
password and personal lockout message can be set up ahead
of time without being connected to a 7800 SERIES device. A
clone function allows you to make multiple Business Cards
from the original display.
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Cont ents
Contents
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Application ........................................................................ 1
Hold and Fault Message Summary .................................. 16
Features ........................................................................... 2
Appendi
x
A:Display Setup ............................................... 25
Specifications ................................................................... 2
Displa
y
Setup-CLONE ............................... 25
Ordering Info
r
mation ........................................................ 2
Displa
y
Setup-CS ON/OFF ........................ 28
Ins
t
allation ........................................................................ 3
Displa
y
Setup-CS EDIT ............................. 30
Wiring ............................................................................... 4
Appendi
x
B: Edit Text and Characte
r
s ............................. 32
T
r
oubleshooting ................................................................ 12
Appendi
x
C: ModBus Da
t
a Featu
r
es ............................... 33
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65-0090-6

Honeywell S7800A Specifications

General

Model	S7800A
Frequency	50/60 Hz
Operating Temperature	-40°C to +60°C
Humidity Range	non-condensing
Approvals	UL, CE

Summary

PRODUCT DATA

KDM Functionality and 7800 Series Overview

Details the KDM's role in annunciation, reset, report generation, and burner control for 7800 Series devices.

APPLICATION

S7800A KDM Capabilities

Describes the KDM's ability to show system status, first-out annunciation, and diagnosis.

FEATURES

Key Features of the S7800A KDM

Lists application flexibility, communication capabilities, microcomputer reliability, and diagnostic functions.

SPECIFICATIONS

Technical Specifications and Ratings

Covers electrical, terminal, and environmental ratings, as well as mechanical and display details.

INSTALLATION

Installation Precautions and Environmental Considerations

Includes warnings, important notes, humidity, vibration, and weather guidelines for installation.

MOUNTING OPTIONS

KDM Mounting Configurations

Details mounting on relay modules, remote brackets, and door panels.

WIRING

Wiring Guidelines and Safety

Provides wiring instructions, safety warnings, and references to diagrams and tables.

KEYBOARD FUNCTIONS

Operating the KDM Buttons

Explains the functions of the scroll, mode, change-level, and back buttons for navigation and operation.

TROUBLESHOOTING

System Diagnostics and Fault Annunciation

Covers how the KDM aids in diagnosing failures using self-diagnostics and first-out annunciation.

LOCKOUT MESSAGE ANALYSIS

Understanding Lockout Display States

Describes the four states of lockout messages displayed by the KDM, including fault codes and reasons.

APPENDIX A: DISPLAY SETUP

Display Setup Menu Overview

Outlines menu options like Clone, MB Address, Baud Rate, Clear All, Password, and CS settings.

Cloning Display Settings

Details copying display setup to additional units using a cloning jig.

MODBUS CONFIGURATION

Setting ModBus Address and Baud Rate

Explains configuring ModBus address and baud rate for communication.

DISPLAY SETTINGS MANAGEMENT

Clearing Configuration and Password Management

Covers resetting display settings to factory defaults and changing the unit's password.

CUSTOMER SERVICE MESSAGE SETUP

Configuring CS ON/OFF and CS TEST

Details enabling, testing, and editing the Call Service message for lockout conditions.

CUSTOMER SERVICE MESSAGE EDITING

CS Edit Functionality

Explains how to personalize the Call Service message using three editable screens with 20 characters per line.

APPENDIX B: EDIT TEXT AND CHARACTERS

Available Characters for Text Editing

Lists available text and characters for message editing on the KDM.

APPENDIX C: MODBUS DATA FEATURES

ModBus Operation and Function Codes

Introduces ModBus data features, supported function codes, and register mapping.

MODBUS DEVICE CONFIGURATION

Assigning Device Address and Baud Rate

Explains assigning unique addresses and baud rates for ModBus RTU communications.

BURNER CONTROL DATA INTERPRETATION

Burner Control Type Codes and State Bits

Provides codes for burner control models and maps sequence states to bit registers.

SEQUENCE AND STRING CODE REFERENCE

Sequence States and String Code Equivalents

Details sequence state codes, register values, and corresponding string messages for display.

FAULT CODE AND MESSAGE REFERENCE

7800 SERIES Fault Codes and String Mapping

Lists fault codes, their messages, and corresponding string codes for troubleshooting.

FAULT HISTORY RECORD FORMAT

Understanding Fault History Data Structure

Describes the register format for accessing historical fault records, including code, string, and state.