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IM WT3001E-51EN
• Selecting the Element/Wiring Unit
• You can select the element/wiring unit from the choices below. The selectable items
vary depending on the installed elements.
Element1, Element2, Element3, Element4, ΣA, and ΣB
• If there are no elements that are assigned to the selected wiring unit, there is
no numeric data. Thus, 0 V is output in this case. For example, if elements are
assigned to ΣA and no elements are assigned to ΣB, then 0 V is output for the
measurement function of ΣB.
• Changing the Harmonic Order of the Measurement Function of
Harmonic Measurement
When the measurement mode is set to normal measurement, waveform computation,
or FFT, the measured order can be set to normal measured value (---) or from dc (0
th
order) up to 100
order.
When the measurement mode is set to wide bandwidth harmonic measurement mode,
the measured order can be set to total value or from dc (0
Note
•
For the meanings of the measurement function symbols that are output, see section 2.2,
"Measurement Modes and Measurement Functions", 2.5, "Computation," 2.6, "Integration",
and appendix 1, "Symbols and Determination of Measurement Functions (Option)" in the
User's Manual IM WT3001E-01EN as well as chapter 1, "Motor Evaluation Function,"
chapter 6, "Delta Computation", and chapter 7, "Harmonic Measurement in Normal
Measurement Mode (Option)" in this manual.
• For details on the wiring units expressed as ΣA and ΣB, see section 4.1, "Selecting the
Wiring System" in the User's Manual IM WT3001E-01EN.
•
0 V is output in places where the measurement function is not selected or there are no
numeric data.
•
The range of the order of the numeric data determined by the harmonic measurement
is from the minimum measured order specified in section 7.5 up to the upper limit of the
measured order that is automatically determined by the PLL source frequency (see section
7.9). There is no numeric data for orders of numeric data of D/A output items outside
this range even if you specify such orders. For harmonic orders less than the minimum
measured order specified in section 7.5 (for example, 0
order) and those greater than the maximum measured order, the output is 0 V.
•
If scaling factors such as VT ratio, CT ratio, and power coefficient are specified on the
voltage, current, and power, and the scaling is ON, 100% (5 V) is output when the scaled
value is equal to the scaled rated value (measurement range × scaling factor).
• For Σ functions, 100% (5 V) is output when the input is equal to the total value that is
obtained when the rated value is input to each corresponding element. If different scaling
factors are placed on each element, 100% (5 V) is output when the scaled value is equal to
the scaled rated value (measurement range × scaling factor).
3.2 Setting the D/A Output
th
order) up to 100th order.
th
order when Min Order is set to 1st
1
2
3
4
th
5
6
7
8
9
10
11
12
13
Index
3-7
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