Process Image Descriptions - WAGO 750-494 Series Manual

WAGO-I/O-SYSTEM 750
750-494 3-Phase Power Measurement Module
5.4

Process Image Descriptions

The I/O module provides a large number of measured values for a three-phase
supply network. These measured values are organized into collections which can
be selected by specifying the COL_ID. The following collections are available:
COL_ID = 007 – DC measured values
All measured values provided by the I/O module involved with DC measurement.
COL_ID = 009 – AC measured values
All measured values provided by the I/O module involved with AC measurement.
COL_ID = 020 – Harmonics analysis L1
All measured values provided by the I/O module involved with the harmonics
analysis for Phase L1.
COL_ID = 021 – Harmonics analysis L2
All measured values provided by the I/O module involved with the harmonics
analysis for Phase L2.
COL_ID = 022 – Harmonics analysis L3
All measured values provided by the I/O module involved with the harmonics
analysis for Phase L3.
The individual measured values are identified within a collection by specifying a
MET_ID. The following section "Collections of Measured Value " contains a
definition of all the measured value collections with the corresponding MET_IDs,
measured value data types and scaling factors in the process image.
Example 1: COL_ID = 007, MET_ID = 004
Measured value:
Data type in the PI:
Scaling factor PI 750-494:
Scaling factor PI 750-494/000-001:
Example 2: COL_ID = 009, MET_ID = 003
Measured value:
Data type in the PI:
Scaling factor PI 750-494:
Scaling factor PI 750-494/000-001:
Manual
Version 1.2.0
Process Image
DC voltage L1-N
UInt32
0.01V / LSB
0.01V / LSB
RMS value, current L3
UInt32
0.0001A / LSB
0.0005A / LSB
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