Connection Wiring - Siemens SITRANS F Operating Instructions Manual

5.4.4

Connection Wiring

Terminal Block Wiring
These connection diagrams apply to the part numbers listed below.
FST020
Figure 5-4
Note
4 to 20 mA current output Channel 2
It is not required to use shielded cables for the pure 4 to 20 mA current output.
Table 5-1 Input/Output Wiring
Pin# Signal
1 Io1+
2 Io1-
3 Chassis
4 C
5 NO
6 NC
7 Chassis
8 PULSE OUTPUT +
9 PULSE OUTPUT -
10 Chassis
11 NO TOT +
12 NO TOT -
13 CLR TOT +
14 CLR TOT -
15 Modbus_B
16 Modbus _A
17 Chassis
SITRANS FST020 IP65 (NEMA 4X)
Operating Instructions, 05/2022, A5E41425845-AC
5.4 Transmitter power supply, communications and I/O connections
Terminal board channels and pin numbers
Function
Isolated Loop Supply
Isolated Loop Return
Ground
Common
Normally Open
Normally Closed
Ground
Transistor
Transistor
Ground
DIGITAL INPUT +
DIGITAL INPUT -
DIGITAL INPUT +
DIGITAL INPUT -
Differential +
Differential -
Ground
SITRANS FST020
7ME3570..._...
Spannable 4-20mA output (Loop Powered) This
output also provides a fault indication by drop‐
ping to 2mA if assigned to flow rate and under
fault conditions.
Ground
Relay Output
Relay Output
Relay Output
Ground
Menu selection: PGEN, POS TOTAL, NEG TOTAL
Ground
Freezes Totalizer to stop incrementing.
Clears Totalizer
Serial communication, Modbus protocol
Serial communication, Modbus protocol
Ground
Connecting
Description
31