Supplementary Electronics - Siemens SITRANS LG270 Operating Instructions Manual

Connection compartment
with low voltage
Supplementary electron-
ics - Additional current
output
28
Fig. 17: Connection compartment with double chamber housing with low volt-
age
Terminal Function
1 Voltage supply
2 Voltage supply
5 4 ... 20 mA output (active)
6 4 ... 20 mA output (passive)
7 Mass - output
8 Function ground when in-
stalling according to CSA
(Canadian Standards Asso-
ciation)
5.4

Supplementary electronics

To make a second measured value available for use, you can use the
supplementary electronics "Additional current output".
Both current outputs are passive and need a power supply.
Fig. 18: Terminal compartment, double chamber housing, supplementary elec-
tronics "Additional current output"
1 First current output (I) - Voltage supply and signal output, sensor (HART)
2 Additional current output (II) - Voltage supply and signal output (without
HART)
3 Ground terminal for connection of the cable screen
SITRANS LG270 - Operating Instructions
power supply
+
1
2
5
( ) (-)
/L
/N
Polarity
+/L
-/N
+
+
-
I
4...20mA
+
1
2
( ) (-)
3
1
4...20mA
6 7 8
I I
4...20mA
+
7 8
( ) (-)
2
PBD-51041064