Hioki PW8001-01 Instruction Manual page 91

4
Tap the [Sync. source]
Set the source that determines the period that serves as the basis for calculating motor analysis parameters.
Motor analysis parameters are measured using intervals of the source selected here.
See "Synchronization source" (p. 58).
U1 to U8, I1 to I8, DC,
CH B, CH D, CH F, CH H
When setting Ch. H to the origin signal (Origin), you can select
source.
The set motor synchronization source is displayed in
displayed on [Meas] > the
IMPORTANT
[DC]
• When is selected as the synchronization source, segments will be matched with the data
refresh interval.
(10 ms, 50 ms, 200 ms)
• When measuring motor efficiency under a fluctuating load, select the same synchronization
source as that for the motor input measurement channel. Efficiency can be measured more
accurately by using the same calculation interval for motor input and motor output.
5
Tap the [LPF/PNF] box and select a low-pass filter or pulse noise filter from the list.
LPF OFF (20
PNF OFF,
Low-pass filter (LPF)
When the input of Ch. A, Ch. C, Ch. E, or Ch. G is set to the analog DC setting, you can set the filter to
eliminate harmonic noise.
[1 kHz]
Set the filter to
The LPF setting has no effect on input when input is not set to analog DC input.
Pulse noise filter (PNF)
When the input of Ch. A, Ch. C, Ch. E, or Ch. G is set to
eliminate the input pulse noise for Ch. B, Ch. D, Ch. F, or Ch. H, respectively.
Use this setting when the measured values for frequency or RPM data input using a pulse signal are unstable
due to noise.
IMPORTANT
• This setting has no effect on channels for which the input is set to analog DC input.
• When the PNF is set to
detected; when it is set to
6
Tap the [Slip] box, then select a input frequency source from the list.
This sets the frequency of the measurement channel inputted to the motor in order to calculate the motor's
slip.
fu1, fI1, fu2, fI2, fu3, fI3, fu4, fI4, fu5, fI5, fu6, fI6, fu7, fI7, fu8,
Slip equations
2
When the
×
100
unit is r/min
Select the voltage or current supplied to the motor, whichever is more stable, as the input frequency source.
box to open the settings window.
Ext1 to Ext4, Zph1, Zph3
[Basic] screen.
kHz), 1 kHz
Strong (100 kHz), Weak (1.8 MHz)
if external noise in analog DC input destabilizes measurement.
[Weak (1.8 MHz)] , pulses of approx. 1.8 MHz or higher will not be
[Strong (100 kHz)], pulses of 100 kHz or higher will not be detected.
× ×
60 (input frequency) − |RPM|
2
HIOKI PW8001A961-00
Motor Measurement (Motor Analysis-Equipped Model)
[Zph1] or [Zph3]
[Sync] at the top of the screen when
[Pulse] or [Frequency], you can set the filter to
fI8
×
(setting value of the number of motor poles)
× ×
60 (input frequency)
as the synchronization
[A-D] or [E-H] is
85