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1
E Motor Parameters
Set t e Motor ated Slip
Calculate the motor rated slip using the base speed listed on the motor nameplate. Refer to the formula below, then enter that
value to E2-02.
Motor rated slip = rated frequency [Hz] – base speed [r/min] × (no. of motor poles) / 120
Set t e No Load Current
Enter the no-load current at rated frequency and rated voltage to E2-03. This information is not usually listed on the nameplate.
Contact the motor manufacturer if the data cannot be found.
The default setting of the no-load current is for performance with a 4-pole Yaskawa motor.
Set t e Line to Line esistance
E2-05 is normally set during Auto-Tuning. If Auto-Tuning cannot be performed, contact the motor manufacturer to determine
the correct resistance between motor lines. The motor test report can also be used to calculate this value using the formulas
below:
• E-type insulation: Multiply 0.92 times the resistance value (Ω) listed on the test report at 75 °C (167 °F).
• B-type insulation: Multiply 0.92 times the resistance value (Ω) listed on the test report at 75 °C (167 °F).
• F-type insulation: Multiply 0.87 times the resistance value (Ω) listed on the test report at 115 °C (239 °F).
Set t e Motor Iron Loss or or ue Compensation
Only required when using V/f Control. Enter this value in watts to E2-10. The drive uses this setting to improve the precision
of torque compensation.
E
PM Motor Settin s
These parameters set the motor data of a PM motor.
Perform Auto-Tuning for PM motors. The motor data can be entered manually, if known.
1. E5-
parameters are visible only when a OLV/PM motor control mode is selected (A1-02 = 5).
Note:
2. E5-
parameters are not reset when the drive is initialized using parameter A1-03.
E
2 Motor ated Po er
Sets the rated power of the motor. Determined by the value set to T2-04 during Stationary Auto-Tuning for PM motors.
No
E5-02
E
Motor ated Current
Sets the motor rated current in amps. Automatically set when the value is entered to T2-06 during Auto-Tuning.
No
E5-03
The number of decimal places in the parameter value depends on the drive model. This value has two decimal places (0.01 A) if the drive
Note:
is set for a maximum applicable motor capacity up to and including 11 kW, and one decimal place (0.1 A) if the maximum applicable motor
capacity is higher than 11 kW.
E
Number o Motor Poles
Sets the number of motor poles. Automatically set when the value is entered to T2-08 during Auto-Tuning.
No
E5-04
E
Motor Stator esistance (r1)
Set the resistance for one motor phase. Do not enter the line-to-line resistance into E5-05 when measuring the resistance
manually.
7
Parameter Name
Motor Rated Power
Parameter Name
Motor Rated Current
Parameter Name
Number of Motor Poles
Settin
an e
0.10 to 370.00 kW
Settin
an e
10 to 200% of drive rated
current
Settin
an e
2 to 48
De ault
Determined by
o2-04
De ault
Determined by
o2-04
De ault
Determined by
o2-04
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