S7999D1048 COMBUSTION SYSTEM OPERATOR INTERFACE DISPLAY
11
65-0321—01
Fig. 9. System Modbus™ network wiring.
GETTING STARTED
1.
Make sure the S7999D 8-pin connector is properly
aligned and pressed firmly in place.
2.
Make sure the wires between the 8-pin connector and
the controller are properly wired and secured.
3.
Make sure the power supply is connected securely to the
power source.
WARNING
Electrical Shock Hazard.
Can cause severe injury, death or equipment
damage.
Line voltage is present at the 120 Vac power supply.
THE AVAILABLE COM PORT CAN BE CONNECTED TO EITHER A FUEL/AIR RATIO CONTROL SYSTEM (COMMISSION) OR ONE
S7810M MODBUS MODULE.
M33565B
A B C A B C COM POWER
3
“C” TERMINALS ARE CONNECTED INTERNALLY TO 24 VAC “COM”.
3
4
MAKE SURE 24 VAC POWER SUPPLY TO EACH S7999D ARE CONNECTED IN PHASE (OBSERVE TRANSFORMER PRIMARY AND
SECONDARY WINDING POLARITIES).
EITHER COM PORT CAN BE USED; ENSURE THE BAUD RATE FOR EACH COM PORT MATCHES.
5
CONNECT SHIELD TO EARTH GROUND.
1
SEE 65-0249 FOR CONTROL BUS (LOCAL RS-485 COMMUNICATION BUS) WIRING.
2
4
COM 1
COM 2
24 VAC
3
A B C A B C COM POWER
SYSTEM S7999D OI DISPLAY
3
COM 1
COM 2
24 VAC
3
5
5
1
N
L
1
1
A B C A B C COM POWER
LOCAL S7999D OI DISPLAY
3
COM 1
COM 2
24 VAC
3
5
4
1
N
L
LOCAL S7999D OI DISPLAY
6
6
6
6
Summary of Contents for S7999D1048
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