Siemens SITRANS FC720 Operating Instructions Manual page 110

FC7x0
Wiring
Installation of fire
retardant connecting
cable option L7x/L8x
Fig. 66: Transmitter and sensor interconnection diagram
1
2
3
Fig. 67: Terminated fire retardant connecting cable L7x/L8x, transmitter side
Connection scheme of fire retardant connecting cable option L7x/L8x
Tab. 34: Version L7x/L8x
Signal
D+
D-
S1+
S1-
S2+
S2-
TP1
TP2
TP3
COM
Conductor pair number refers to the numbers printed on the single conductors
1)
Present only at transmitter side
2)
110 / 180
1
D+ D+
D– D–
S1+
S1+
S1–
S1–
S2+ S2+
S2– S2–
TP1
TP1
TP2 TP2
TP3 TP3
COM
3
Sensor
Transmitter
Potential equalization system
Conductor pair number
Shield wire
2)
A5E52748387-AA, 2023/09
2
L7x/L8x cable
1)
Conductor colour
white
1
blue
white
2
blue
white
3
blue
white
4
blue
5 white
–
2)
Connecting cable installation
1
2
3
4
5
shield wire