2.6 E: Motor Parameters
304 YASKAWA TOEPYAIGA8002B GA800 Drive Programming
This parameter value becomes the base slip compensation value. The drive automatically sets this parameter during
Auto-Tuning. When you cannot do Auto-Tuning, calculate the motor rated slip with the information on the motor
nameplate and this formula:
E2-02 = f - (n × p) / 120
• f: Motor rated frequency (Hz)
• n: Rated motor speed (min
-1
(r/min))
• p: Number of motor poles
■ E2-03: Motor No-Load Current
No.
(Hex.)
Name Description
Default
(Range)
E2-03
(0310)
Motor No-Load Current
Sets the no-load current for the motor in amps when operating at the rated frequency and the no-load
voltage.
Determined by o2-04, C6-01
(0 to E2-01)
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 4720
The drive automatically sets this parameter during Auto-Tuning. When you cannot do Auto-Tuning, you can also use
the motor no-load current on the motor test report to enter this value 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 operation with a 4-pole motor recommended by Yaskawa.
■ E2-04: Motor Pole Count
No.
(Hex.)
Name Description
Default
(Range)
E2-04
(0311)
Motor Pole Count
Sets the number of motor poles.
4
(2 - 120)
Note:
• When A1-02 = 0, 1, 3 [Control Method Selection = V/f, CL-V/f, CLV], the maximum value is 120.
• When A1-02 = 2, 4 [OLV, AOLV], the maximum value is 48.
Auto-Tuning automatically sets this parameter to the value of [Number of Motor Poles].
■ E2-05: Motor Line-to-Line Resistance
No.
(Hex.)
Name Description
Default
(Range)
E2-05
(0312)
Motor Line-to-Line
Resistance
Sets the line-to-line resistance for the motor stator windings.
Determined by o2-04, C6-01
(0.000 - 65.000 Ω)
Note:
This value is the motor line-to-line resistance. Do not set this parameter with the single-phase resistance.
Auto-Tuning automatically sets this parameter. If you cannot do Auto-Tuning, use the test report from the motor
manufacturer to configure the settings. You can calculate the motor line-to-line resistance with one of these formulas:
• E-type insulation: [the resistance value (Ω) shown on the test report at 75 °C] × 0.92
• B-type insulation: [the resistance value (Ω) shown on the test report at 75 °C] × 0.92
• F-type insulation: [the resistance value (Ω) shown on the test report at 115 °C] × 0.87
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