Hioki 3390 - Motor Input Settings

4.8 Viewing Motor Measurement Values (With Hioki 9791 or 9793 installed)
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Set to suit the motor to be measured, or the connected torque sensor or tachometer.
See "8.5 Using the Motor Testing Option (when specified before factory shipping, for motor analysis)" (p. 138)
Select the source of the signal that determines the period to serve as the basis for motor analysis calcu-
lations. Motor analysis items are measured according to the period of the source selected here.
See "4.2.3 Selecting the Sync Source" (p. 47)
The selected motor sync source is displayed as [Sync] on the Motor screen.
When CH A or CH B is set for Analog DC input, enable the filter to suppress harmonic noise.
Measurements should normally be made with the filter disabled (OFF), but it should be enabled (ON)
when measurement values are destabilized by the effects of external electrical noise.
4.8.1 Motor Input Settings
Basic Operating Procedure
Selecting the Motor Sync Source
Display the [Motor]
page
Select with the F keys
Torque input setting
Revolution signal input setting
Motor Sync Source Low-Pass Filter Input Frequency Source
Select the item
U1, U4, I1, I4, DC50 ms (Default setting), DC100 ms, Ext
Low-Pass Filter (LPF) Settings
• All motor analysis items depend on the same sync source.
• When measuring motor efficiency in combination with the functions of section "4.7 Viewing
Efficiency and Loss Measurement Values" (p. 77), select the same sync source as that of the
motor voltage and current input channels. Optimum measurement accuracy is possible when
the calculation periods are the same.
• [Ext] is only selectable when CH B is set for pulse input.
ON, OFF (Default setting)
• The LPF setting is the same for CH A and CH B. Independent setting is not available.
• When CH A is set for frequency input and CH B is set for pulse input, the LPF setting has no
effect.