3-2
IM WT18
O
1E-02EN
Computing A and B (Calculation)
Compute A (the slope) and B (the offset) from two points on the characteristics graph of a revolution
sensor or torque meter.
Rotating Speed’s A and B
On the motor evaluation conditions setup screen, select Calculation under Speed to display the
following screen.
Set the first X-axis value [V] and Y-axis value [rpm]
(−1.000 T to 1.000 T).
Set the second X-axis value [V] and Y-axis value [rpm]
(−1.000 T to 1.000 T).
Computes A and B
Torque’s A and B
On the motor evaluation conditions setup screen, select Calculation under Torque to display the
following screen.
Set the first X-axis value [V] and Y-axis value [Nm]
(−1.000 T to 1.000 T).
Set the second X-axis value [V] and Y-axis value [Nm]
(−1.000 T to 1.000 T).
Computes A and B
Setting the Electrical Angle Correction Value (Electrical Angle
Correction)
On the motor evaluation conditions setup screen, select Electrical Angle Correction to display the
following screen.
Set the correction value (−180.00 to 180.00).
Clears the correction value
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, I1, U2, I2, U3, I3, U4, I4, U5, I5, U6, I6).
Computing the Motor Efficiency and Total Efficiency
This instrument can compute the motor efficiency (the ratio of motor output to the power consumed by
the motor) and total efficiency from the measured active power and motor output. For information on
how to set expressions, see section 1.8.
3.1 Setting Motor Evaluation Conditions
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