11.6 E: Motor Parameters
812 YASKAWA ELECTRIC SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual
The value set for E4-01 becomes the reference value for motor protection, the torque limit, and torque control.
Enter the motor rated current written on the motor nameplate. Auto-Tuning automatically sets the value of E4-01
to the value input for [Motor Rated Current].
■ E4-02: Motor 2 Rated Slip
No.
(Hex.)
Name Description
Default
(Range)
E4-02
(0322)
Motor 2 Rated Slip
Sets the motor rated slip for motor 2.
Determined by o2-04
and C6-01
(0.000 - 20.000 Hz)
The value set in E4-02 becomes the base slip compensation value. The drive sets this parameter during Rotational
Auto-Tuning and Stationary Auto-Tuning. If you cannot do Auto-Tuning, use the information written on the
motor nameplate and this formula to calculate the motor rated slip:
E4-02 = f - (n × p) / 120
• f: Motor rated frequency (Hz)
• n: Rated motor speed (min
-1
(r/min))
• p: Number of motor poles
■ E4-03: Motor 2 Rated No-Load Current
No.
(Hex.)
Name Description
Default
(Range)
E4-03
(0323)
Motor 2 Rated No-
Load Current
Sets the no-load current for motor 2 in amps when operating at the rated
frequency and the no-load voltage.
Determined by o2-04
and C6-01
(0 to E4-01)
Note:
The default settings and setting ranges are in these units:
• 0.01 A: 2004 to 2042, 4002 to 4023
• 0.1 A: 2056 to 2415, 4031 to 4675
The drive sets this parameter during Rotational Auto-Tuning and Stationary Auto-Tuning. You can also enter the
motor no-load current shown on the motor test report to E4-03 manually. Contact the motor manufacturer to
receive a copy of the motor test report.
Note:
The default setting of the no-load current is for a 4-pole motor recommended by Yaskawa.
■ E4-04: Motor 2 Motor Poles
No.
(Hex.)
Name Description
Default
(Range)
E4-04
(0324)
Motor 2 Motor Poles
Sets the number of poles for motor 2.
4
(2 - 120)
Auto-Tuning automatically sets E4-04 to the value input for [Number of Motor Poles].
■ E4-05: Motor 2 Line-to-Line Resistance
No.
(Hex.)
Name Description
Default
(Range)
E4-05
(0325)
Motor 2 Line-to-Line
Resistance
Sets the line-to-line resistance for the motor 2 stator windings.
Determined by o2-04
and C6-01
(0.000 - 65.000 Ω)
Note:
This value is the line-to-line resistance for motor 2. Do not use the single-phase resistance to set this parameter.
The drive automatically calculates this value when Auto-Tuning completes successfully. If you cannot do Auto-
Tuning, get the test report from the motor manufacturer. To calculate the motor line-to-line resistance, use the
information shown on the motor nameplate with one of these formulas:
• E-type insulation: the resistance value (Ω) shown on the test report at 75 °C × 0.92
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