Siemens SIMATIC S5-100U, System Manual

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S5-100U Analog Value Processing
Connection of Thermocouples with Compensating Box to Module 464-8MA11/8MA21
The influence of the temperature on the reference junction (e. g., terminal box) can be compensated
for with a compensation box. Observe the following rules:
• The compensation box must have a floating supply.
•
The power supply must have a grounded shielding winding.
• The compensation box must be connected to terminals 1 and 2 of the terminal block.
11.2.2 Two-Wire Connection of Voltage Sensors
You can use the following three modules for the connection of voltage sensors:
• Analog Input Module 464-8MB11 for voltages of±1 V
• Analog Input Module 464-8MC11 for voltages of±10 V
• Analog Input Module 466-8MC11 for voltages from 0 to 10 V
Figure 11-3 shows the two-wire connection of voltage sensors.
Figure 11-3. Two-Wire Connection of Voltage Sensors
(6ES5 464-8MB11, 464-8MC11, 466-8MC11)
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EWA 4NEB 812 6120-02b
11-3