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7800 SERIES S7800A KEYBOARD DISPLAY MODULE
S7800 KEYBOARD DISPLAY MODULE
(MOUNTED ON 7800 SERIES RELAY MODULE)
5
2
3
1
120 OHM
RESISTOR
1
120 OHM
RESISTOR
1
2
3
1
5
S7800 REMOTE KEYBOARD DISPLAY MODULE
1 THREE WIRE SHIELDED CABLE MAY BE REQUIRED. TWO
120 OHM TERMINATING RESISTORS ARE REQUIRED FOR
CONNECTING OVER 100 FEET [30 METERS]. CABLE SHIELD
MUST BE TERMINATED TO EARTH GROUND AT BOTH ENDS.
IF SHIELDED CABLE IS NOT USED, TWISTED PAIR WIRE
MUST BE USED.
2 WHEN CONNECTING THE KEYBOARD DISPLAY MODULE DATA
CONTROLBUS MODULEª, OR REMOTE RESET MODULE
EXTERNAL FROM THE CONTROL CABINET, APPROPRIATE
MEASURES MUST BE TAKEN TO MEET EN60730 SAFETY
LOW VOLTAGE REQUIREMENTS (SEE APPROVALS).
3 7800 SERIES RELAY MODULE CAN SUPPORT ONE S7800
KEYBOARD DISPLAY MODULE. A 13 Vdc POWER SUPPLY
IS REQUIRED FOR EACH ADDITIONAL DISPLAY.
4
UP TO 36 S7800 KEYBOARD DISPLAYS CAN BE CONNECTED
TO A SINGLE 7800 RELAY MODULE NOT TO EXCEED
4000 FEET (1219M) TOTAL LEADWIRE RUN. DAISY CHAIN 1 TO 1,
2 TO 2, 3 TO 3 AND PROVIDE 13 Vdc POWER SUPPLY FOR
EACH S7800 DISPLAY.
5
TERMINALS OF 203541 5-WIRE CONNECTOR.
Fig. 6. Wiring for multiple Keyboard Display Modules.
KDM Display
The first line of the KDM display provides current status of the
burner sequence (STANDBY, PURGE, PILOT IGN, MAIN IGN,
RUN and POSTPURGE), timing information (PURGE, PILOT
IGN, MAIN IGN and POSTPURGE) in minutes and seconds,
hold information (PURGE HOLD), and lockout information
(Lockout, Fault Code, Message and Sequence). The extreme
right side of the first line will be either blank or will show a small
arrow pointing to the second line followed by a two-letter code
(DI-Diagnostic Information, Hn-Fault History Information
(where n equals the number of the fault), and EA-Expanded
65-0090-6
MOMENTARY
PUSHBUTTON
SWITCH
4
5
3
2
13 Vdc
4
5
POWER
SUPPLY
4
L2
L1
(HOT)
2
M5006G
Annunciator). When the arrow and two-letter code are
displayed, it indicates the second line is showing a selectable
message submenu. The second line will display selectable or
preemptive messages. A selectable message supplies
information for flame strength, system status indication, system
or self-diagnostics and troubleshooting. A preemptive
message has parentheses around the message and supplies a
detailed message to support the sequence status information.
A preemptive message can also be a lockout message. A
preemptive message replaces a selectable message to
support the sequence status information. It also replaces a
selectable message after 60 seconds if it or a lockout message
is available. The 7800 SERIES Relay Module LED provide
positive visual indication of the Relay Module sequence. The
LED is energized simultaneously with the correct sequence
description.
S7810 DATA CONTROLBUS MODULEª
(MOUNTED ON 7800 SERIES RELAY MODULE)
1
120 OHM
RESISTOR
120 OHM
RESISTOR
1
7800 REMOTE KEYBOARD DISPLAY MODULE
1 THREE WIRE SHIELDED CABLE MAY BE REQUIRED. TWO 120
OHM TERMINATING RESISTORS ARE REQUIRED FOR
CONNECTIONS OVER 100 FEET. CABLE SHIELD MUST BE
TERMINATED TO EARTH GROUND AT BOTH ENDS. IF SHIELDED
CABLE IS NOT USED, TWISTED PAIR WIRE MUST BE USED.
2 WHEN CONNECTING THE KEYBOARD DISPLAY MODULE DATA
CONTROLBUS MODULEª, OR REMOTE RESET MODULE
EXTERNAL FROM THE CONTROL CABINET, APPROPRIATE
MEASURES MUST BE TAKEN TO MEET EN60730 SAFETY
LOW VOLTAGE REQUIREMENTS (SEE APPROVALS).
3 221818A OR C EXTENSION CAN BE USED IN PLACE OF THE
S7810 DATA CONTROLBUS MODULEª IF DISPLAY IS TO
A CABINET DOOR.
Fig. 7. Wiring Keyboard Display Module for remote
6
MOMENTARY
PUSH BUTTON
SWITCH
2
3
4
5
3
1
1
4
2
3
5
mounting.
2
M5285C
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