5.5 E: Motor Parameters
YASKAWA ELECTRIC SIEP C710616 35D YASKAWA AC Drive E1000 Technical Manual 175
■ E2-02: Motor Rated Slip
Sets the motor rated slip in Hz. The setting in E2-02 is used for motor protection and to calculate torque limits.
Calculate the motor rated slip using the information written on the motor nameplate and the formula below:
E2-02 = f - (n × p)/120
(f: rated frequency (Hz), n: rated motor speed (r/min), p: number of motor poles)
■
E2-03: Motor No-Load Current
Set the no-load current for the motor in amperes when operating at the rated frequency and the no-load voltage. The
motor no-load current listed in the motor test report can be entered to E2-03 manually. Contact the motor manufacturer to
receive a copy of the motor test report.
Note: This value's number of decimal places depends on the drive model. The value will have two decimal places (0.01 A) if the drive
is set for a Maximum Applicable Motor Capacity up to 11 kW (refer to Table A.1 and Table A.2) and one decimal place (0.1 A)
if the set Maximum Applicable Motor Capacity is higher than 11 kW
■ E2-04: Number of Motor Poles
Set the number of motor poles to E2-04. If Auto-Tuning completes successfully, the value entered to T1-06 will
automatically be saved to E2-04.
■
E2-05: Motor Line-to-Line Resistance
Sets the line-to-line resistance of the motor stator winding. If Auto-Tuning completes successfully, this value is
automatically calculated. Remember that this value must be entered as line-to-line and not for each motor phase.
If Auto-Tuning is not possible, then contact the motor manufacturer to find out the line-to-line resistance or measure it
manually. When using the manufacturer motor test report, calculate E2-05 by the formulas below.
• E-type insulation: Multiply 0.92 times the resistance value (Ω) listed on the test report at 75°C
• B-type insulation: Multiply 0.92 times the resistance value (Ω) listed on the test report at 75°C.
• F-type insulation: Multiply 0.87 times the resistance value (Ω) listed on the test report at 115°C.
■
E2-10: Motor Iron Loss for Torque Compensation
This parameter sets the motor iron loss in watts.
No. Parameter Name Setting Range Default
E2-02 Motor Rated Slip 0.00 to 20.00 Hz Determined by o2-04
No. Parameter Name Setting Range Default
E2-03 Motor No-Load Current
0 to [E2-01]
(unit: 0.01 A)
Determined by o2-04
No. Parameter Name Setting Range Default
E2-04 Number of Motor Poles 2 to 48 4
No. Parameter Name Setting Range Default
E2-05
<1> The units are expressed in mΩ for models CIMR-E4A0930 and 4A1200.
Motor Line-to-Line Resistance 0.000 to 65.000 Ω <1> Determined by o2-04
No. Parameter Name Setting Range Default
E2-10 Motor Iron Loss for Torque Compensation 0 to 65535 W Determined by o2-04
SIEP_C710616_35.book 175 ページ ２０１５年１１月３０日 月曜日 午後２時２分
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