Siemens SITRANS FC720 Operating Instructions Manual page 79

Electrical interfaces
SITRANS FC
24 V
0 V
Fig. 36: Active pulse output P/Sout with internal pull-up resistor
①
Maximum voltage and correct polarity must be observed for wiring.
Passive pulse output
P/Sout
Maximum load current
Power supply
Maximum pulse rate
Frequency range
SITRANS FC
Fig. 37: Passive pulse output connection P/Sout with electronic counter
①
②
③
SITRANS FC
1
Fig. 38: Passive pulse output P/Sout connection with electromechanical counter
①
②
③
Since this is a transistor contact, maximum allowed current as well as polarity and level of
Active status output
output voltage must be observed during wiring.
P/Sout
Load resistance
Internal power supply
P/Sout+
P/Sout-
Electronic counter
P/Sout+
1
P/Sout-
Passive pulse or status output
Load resistance
Electronic counter
P/Sout+
2
P/Sout-
Passive pulse or status output
Protective diode
Electromechanical counter
1
Value
≤ 200 mA
≤ 30 V
DC
10000 pulses/s
0 – 12.5 kHz
2 3
3
Value
> 1 kΩ
24 V ±20 %
DC
A5E52748387-AA, 2023/09
FC7x0
Transmitter
79 / 180