Siemens SITRANS FX330 Operating Instructions Manual page 48

ELECTRICAL CONNECTIONS
4
Switching value reached
Switching value not reached
Table 4-2: Value range for NAMUR
① C2.2.6 Invert Signal On
② C2.2.6 Invert Signal Off
Value range applies only when connected to a switching amplifier with the following reference
values:
• Open-circuit voltage U
• Internal resistance R
via load R
L
Table 4-3: Value range for transistor output
To ensure the value ranges, a load R
transistor output with a nominal voltage of 24 VDC. If other loads are used, caution is advised as
the range of values of the signal voltages then no longer corresponds to the range of values for
the inputs of process control systems and controls (DIN IEC 946).
CAUTION!
The upper limit of the signal current must not be exceeded as this may damage the transistor
output.
For selection of measurement variable and adjustable data of the limit switch refer to chapter
"Menu description C - Setup", menu "C2.2.5 Limit Switch" and appropriate submenus.
48
N/C contact ①
< 1 mA
> 3 mA
= 8.2 VDC
0
= 1 kΩ
i
U
L
0...2 V
between 250 Ω and 1 kΩ is recommended for the passive
L
www.siemens.com/flow
N/O contact ②
I U
L H
0...2 mA 16...30 V
08/2022 - A5E36751269-AG EN
SITRANS FX330
> 3 mA
< 1 mA
I
H
20...100 mA