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Siemens simatic et200sp User Manual

Siemens simatic et200sp
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Analog input module AI Energy Meter 480VAC ST (6ES7134-6PA20-0BD0)
Manual, 12/2015, A5E36061895-AA
71
Minimum and maximum values
10
10.1
Minimum and maximum values
Introduction
The AI Energy Meter 480VAC ST determines the respective highest and lowest measured or
calculated value for a series of measured and calculated values. The values are stored
retentively in the module and can be read using measured value data records 144 and 145.
Benefits
Using the stored minimum and maximum values, for example, you can detect further
irregularities in addition to limit monitoring.
Calculation of minimum and maximum values
Minimum and maximum values are only calculated for the phases in accordance with the
configured connection type. Existing minimum and maximum values that have not been
calculated are initialized with 0. If faults such as under or overcurrent occur during operation,
new minimum and maximum values are calculated.
The measured and calculated values are initialized as follows during commissioning of the AI
Energy Meter 480VAC ST so that the first calculation of minimum and maximum values
supplies a plausible result:
Maximum values for measured and calculated values: Minimum values
Minimum values for measured and calculated values: Maximum values
Configuring
You configure the following settings in STEP 7:
Enable calculation of minimum and maximum values

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Siemens simatic et200sp Specifications

General IconGeneral
CategoryI/O Systems
Power Supply24 V DC
Protection RatingIP20
Number of ModulesUp to 64 modules
MountingDIN Rail
Communication ProtocolsPROFINET, PROFIBUS
Storage Temperature-40 °C to +70 °C
Digital InputsYes (depending on module)
Digital OutputsYes (depending on module)
Analog InputsYes (depending on module)
Analog OutputsYes (depending on module)
ModularityModular
Relative Humidity5 to 95% (non-condensing)
WeightVaries by configuration
System TypeDistributed I/O

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