11 Analog Value Processing
11.1 Analog Input Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 - 1
11.1.1 Connecting Current and Voltage Sensors to Analog
Input Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 - 1
11.2.1 Voltage Measurement with Isolated/Non-Isolated
Thermocouples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 - 2
11.2.2 Two-Wire Connection of Voltage Sensors . . . . . . . . . . . . . . . . . . . 11 - 3
11.2.3 Two-Wire Connection of Current Sensors . . . . . . . . . . . . . . . . . . . 11 - 4
11.2.4 Connection of Two-Wire and Four-Wire Transducers . . . . . . . . . . . . 11 - 4
11.2.5 Connection of Resistance Thermometers . . . . . . . . . . . . . . . . . . . . 11 - 6
11.3 Start-Up of Analog Input Modules . . . . . . . . . . . . . . . . . . . . . . . . . 11 - 7
11.4 Analog Value Representation of Analog Input Modules . . . . . . . . . . 11 - 11
11.5 Analog Output Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 - 19
11.5.1 Connection of Loads to Analog Output Modules . . . . . . . . . . . . . . . 11 - 19
11.5.2 Analog Value Representation of Analog Output Modules . . . . . . . . . 11 - 20
11.6 Analog Value Conversion: Function Blocks FB250 and FB251 . . . . . 11 - 22
11.6.1 Reading in and Scaling an Analog Value -FB250- . . . . . . . . . . . . . . 11 - 22
11.6.2 Output of Analog Value -FB251- . . . . . . . . . . . . . . . . . . . . . . . . . . 11 - 25
EWA 4NEB 812 6120-02
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