4
ELECTRICAL CONNECTIONS
40
SITRANS FX330
www.siemens.com/flow
05/2016 - A5E36751269-AA
4.3.5 Limit switch output
Connection binary output
Connection binary output
Connection binary output
Connection binary output
In accordance with the desired signal transmission, select one of the following connection types
for binary output M:
•
M2/4 and M3 - NAMUR (DC interface in accordance with EN 60947-5-6)
•
M2/4 and M1 - Transistor output (passive, open collector)
Terminal connection
Figure 4-4: Connection binary output
1
Power supply U
ext.
2
Isolated switching amplifier
INFORMATION!
Binary output Mx can only be operated if the loop supply 4...20 mA is applied to the terminals C1+
and C2-. The binary output is inactive by default and must thus be activated in menu C2.2 prior to
first use.
Terminal
M1
M3
M2/4
Connection NAMUR
+ (open collector,
R
i
~ 1 k
Ω
)
Common
Connection transistor output
+ (open collector,
I
max
< 100 mA)
Common