Priniples of analog value processing
4.6 Wiring thermocouples
S7-300 Automation System Module data
Manual, 08/2006, A5E00105505-04
4-17
Connecting thermocouples via compensating box
If all thermocouples connected to the module's inputs share a common reference junction,
compensate the circuit as follows:
0
0ದ
&203
&203ದ 0$1$
0
0ದ
/
0
/ 0
/RJLF
$'&
5HIHUHQFHMXQFWLRQ
&RPS
ER[
%DFNSODQH
EXV
6XSSO\
OHDG
&X
(TXDOL]LQJ
FRQGXFWRUVDPH
PDWHULDODV
WKHUPRFRXSOH
7KHUPR
FRXSOHV
Figure 4-15 Connecting thermocouples to electrically isolated analog inputs via compensation box
Note
To compensate the analog input modules, always use compensation boxes with a reference
junction temperature of 0 °C.
To Next Page
Loading...
Need help?
General
