6-94
Setting Motor Constants
Related Constants
Note All factory-set constants are for a Yaskawa standard 4-pole motor.
* 1. The setting range is 10% to 200% of the Inverter rated output current (the values shown are for a 200 V Class Inverter for 0.4 kW).
* 2. The factory settings depend on Inverter capacity (the values shown are for a 200 V Class Inverter for 0.4 kW).
* 3. The setting range depends on the inverter capacity. The values for a 200 V class inverter of 0.4 kW are given.
Manual Setting of the Motor Constant
Motor Rated Current Setting
Set E2-01 to the rated current value on the motor nameplate.
Motor Line-to-Line Resistance Setting
E2-05 is set automatically when performing motor line-to-line resistance autotuning. When you cannot per-
form tuning, consult the motor manufacturer for the line-to-line resistance value. Calculate the resistance from
the line-to-line resistance value in the motor test report using the following formula, and then make the setting
accordingly.
• E-type insulation: [Line-to line resistance (Ω) at 75°C of test report] × 0.92 (Ω)
• B-type insulation: [Line-to line resistance (Ω) at 75°C of test repor]t × 0.92 (Ω)
• F-type insulation: [Line-to line resistance (Ω) at 115°C of test report] × 0.87 (Ω)
Con-
stant
Number
Name Description
Setting
Range
Factory
Setting
Change
during
Opera-
tion
Access
Level
E2-01 Motor rated current
Sets the motor rated current.
This set value will become the reference value for motor
protection and torque limits.
It is an input data for autotuning.
0.32 to
6.40
*1
1.90 A
*2
No Q
E2-03 Motor no-load current
Sets the motor no-load current.
This constant is automatically set during autotuning.
0.00 to
1.89
*3
1,2
*2
No A
E2-05 Motor line-to-line resistance
Sets the motor phase-to-phase resistance.
This constant is automatically set during autotuning.
0.000
to
65.000
9.842 Ω
*2
No A
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