YOKOGAWA WT5000 User Manual

9-10
IM WT5000-02EN
Setting the Electrical Angle Correction Value (Electric Angle Correction)
7.
Tap Correction. An Electric Angle Correction screen appears.
Can be set on models with the /MTR2 option.
Set the correction value (−180.00 to 180.00).
Automatically computes the correction value
Correction Value is set to the computed value.
Set the voltage or current to automatically compute the correction value of
(U1 to U7, I1 to I7).
Setting the Motor Efficiency Computation
This instrument can compute the motor efficiency (the ratio of power consumption to motor output) and
total efficiency from the active power and motor output that it measures.* For information on how to set
expressions, see section 2.11.
• Example in which motor efficiency is set to η1 and total efficiency to η2
×100
Motor output Pm (W)
PΣA(W)
Motor efficiency η1(%) =
×100
Motor output Pm (W)
PΣB(W)
Total efficiency η2(%) =
Converter
(inverter, etc.)
Motor
Motor output Pm1
PΣA
Motor power
consumption
PΣB
Motor and converter
power consumption
Computation/Output tab
Efficiency button
Motor efficiency setup example
Total efficiency setup example
9.1 Configuring Motor Evaluation and Auxiliary Input Settings

YOKOGAWA WT5000 Specifications

General

Frequency Range	DC, 0.1 Hz to 1 MHz
Number of Channels	Up to 7
Interfaces	USB, Ethernet, GP-IB, RS232
Sampling Rate	10 MS/s
Harmonic Analysis	Up to the 500th order
Weight	Approximately 15 kg
Display	10.1-inch WXGA (1280 x 800) TFT LCD