Operation - Honeywell 7800 SERIES Product Data

S7830 RS485 CONTROLBUS CONNECTOR
2
a
120 OHM
RESISTOR
7800 SERIES
RELAY MODULE
S7800 CONNECTION
1
3
2
3
THREE WIRE SHIELDED CABLE AND 120 OHM (1/4 WATT)
1
TERMINATING RESISTOR MAY BE REQUIRED. CABLE SHIELD
MUST BE TERMINATED TO GROUND AT BOTH ENDS. IF
SHIELDED CABLE IS NOT USED, TWISTED PAIR MUST BE USED.
2 MAXIMUM RS485 LENGTH: 1000 FEET (305 METERS).
3 5 WIRE CONNECTOR (203541) LOCATED ON THE S7800 DISPLAY.
Fig. 6. Wiring the RS-485 ControlBus.
Fig. 7. Electrical panel installation.
c
b
1
M27947
7800 SERIES S7830 EXPANDED ANNUNCIATOR
Fig. 8. Wall or burner installation using Q7800B wiring
CONTROL LIMIT
AND INTERLOCK
DIGITAL POINT
LEDs
RESET
KEY
Fig. 9. S7830 Expanded Annunciator for cabinet
installation using Q7800A wiring subbase.

OPERATION

The S7830 is designed to operate in conjunction with 7800
SERIES Relay Modules to enhance information for causes of
burner lockouts and sequence status by monitoring up to 21
digital contact points. Current burner status and lockout
information is displayed at the S7830 through an array of 26
LED and also on the face of the S7800 Keyboard Display
Module. The information from the S7830 is communicated
through a three-wire twisted ControlBus communications link
to the S7800.
9
subbase.
L SHAPE
CORNER
GUIDES
MOUNTING
SCREW
POWER
LED
SYSTEM
LOCKOUT
LED
FIRST OUT
LED
CURRENT LED
SELECT
KEY
RS485
CONTROLBUS
CONNECTOR
65-0101—03
M20410