Siemens SIMATIC ET 200SP HA/ET 200SP Información Del Producto página 11

Table 1 Pin assignment of Ex-AI 4TC/2RTD 2-/3-/4-wire
Termi Assign Termi
nal ment nal
1 M + 2
0
3 M - 4
0
5 IC +/M 6
2
+
2
7 IC - 8
2
/M -
2
Equipping
• Check the I/O module for damage! You may only plug undamaged I/O modules
onto the BaseUnit.
• The coding element on the BaseUnit latches into place the first time that a I/O
module is plugged in. This prevents the insertion of a wrong module. This
mechanical coding may not be changed.
• When configuring the ET 200SP HA and the ET 200SP, you must observe the
permissible number of I/O modules (see the respective operating instructions).
WARNING
Permissible number of I/O modules
When configuring the ET 200SP HA and the ET 200SP, you must observe the rules
specified below for the maximum configuration and load of the Ex power modules.
Load on the Ex power modules
Ensure that the current consumption of the Ex I/O modules of an Ex module group
does not exceed the permissible output current of the Ex power module.
The maximum current requirement of the I/O module can be found in the technical
specifications.
Permissible output current of the Ex power module > ∑ I
the respective potential group
Commissioning
• You must observe the national regulations during commissioning.
Ex-AI 4xTC 2xRTD 2-3-4-wire
A5E50377623-AA, 04/2021
Assign Explanations
ment
M + Terminals 1; 2 M
1
channel n (0;1)
M - Terminals 3; 4 Mn -: Measuring input negative,
1
channel n (0;1)
IC +/M Termi ICn+: Constant current line positive,
3
+ nals channel n (2;3)
3
5; 6:
Mn+: Measuring input positive, channel
n (2;3)
IC - Termi ICn -:Constant current line negative,
3
/M - nals channel n (2;3)
3
7; 8
Mn -: Measuring input negative, channel
n (2;3)
Ex-AI 4xTC 2xRTD 2-3-4-wire
+: Measuring input positive,
n
of all I/O modules of
max
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