9-12
IM WT3001E-51EN
Frequency Measurement
Item Specifications
Measurement range 45Hz≤f≤1MHz
Measurement Function
Item Specifications
Display update Depends on the PLL source
(Approximately 200 ms when the frequency of the PLL source is 45 Hz to 66 Hz.)
Functional Limitations
Item Specifications
Display Waveform display, trend display, bar graph display, vector display, waveform computation display,
and FFT display are not allowed.
Auto range Not allowed
Averaging Moving average is not allowed. Only exponential averaging is available, and the attenuation
constant is fixed to the value as defined by the IEC standard.
Data update interval Depends on the PLL source
Voltage/Current mode Not selectable. The LED is OFF.
Peak measurement Not allowed
User-defined function Not allowed
MAX hold Not allowed
Efficiency computation Not allowed
Compensation Efficiency compensation is invalid.
Integration Not allowed
Store Not allowed
File save Waveform and waveform sampling data (Acquisition) are not allowed
NULL Not allowed
Synchronized measurement Not allowed
Motor evaluation function Not allowed
Print Auto print is not allowed.
Delta computation Not allowed
E-mail transmission Not allowed
Measurement Functions
For a description of the measurement functions of IEC harmonic measurement mode
and how they are determined, see section 7.11.
Measurement is not allowed for measurement functions related to the functions above
that have limitations. For a list of measurement functions that cannot be measured, see
appendices 10 and 11 in the User’s Manual IM WT3001E-01EN.
9.6 IEC Harmonic Measurement Specifications
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