Analog Modules
5-56
S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
Connection of Thermocouples without Compensation or Using the Reference
Temperature Value
Connect the thermocouples to the inputs of the module, either directly or by means
of compensating lines. Each channel can use a thermocouple type supported by
the analog module independently of the other channels.
M
+
M
–
M
+
M
–
Compensating leads
(same material as
thermocouple)
Figure 5-18
Connection of Thermocouples without Compensation or Using the Reference
Temperature Value to an Isolated AI
Connecting the Compensating Box
The compensating box is looped in in the leads of each thermocouple. The
compensating box must have an isolated supply. The power supply must have
adequate filtering, for example by means of a grounded shielding winding.
Each channel can use a thermocouple type supported by the analog module
independently of the other channels. Each channel requires its own compensating
box.
Note
Use compensating boxes with a reference junction temperature of 0
C for
analog input modules.
Содержание Simatic M7-400
Страница 10: ...Preface x S7 400 M7 400 Programmable Controllers Module Specifications A5E00069467 07 ...
Страница 122: ...Power Supply Modules 3 42 S7 400 M7 400 Programmable Controllers Module Specifications A5E00069467 07 ...
Страница 362: ...Analog Modules 5 146 S7 400 M7 400 Programmable Controllers Module Specifications A5E00069467 07 ...
Страница 384: ...Interface Modules 6 22 S7 400 M7 400 Programmable Controllers Module Specifications A5E00069467 07 ...
Страница 428: ...RS 485 Repeater 10 8 S7 400 M7 400 Programmable Controllers Module Specifications A5E00069467 07 ...
Страница 496: ...M7 400 Expansions 12 26 S7 400 M7 400 Programmable Controllers Module Specifications A5E00069467 07 ...
Страница 562: ...Interface Submodules 13 66 S7 400 M7 400 Programmable Controllers Module Specifications A5E00069467 07 ...
Страница 574: ...Parameter Sets for Signal Modules A 12 S7 400 M7 400 Programmable Controllers Module Specifications A5E00069467 07 ...
Страница 594: ...Diagnostic Data of the Signal Modules B 20 S7 400 M7 400 Programmable Controllers Module Specifications A5E00069467 07 ...
Страница 598: ...Spare Parts and Accessories C 4 S7 400 M7 400 Programmable Controllers Module Specifications A5E00069467 07 ...
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