Setting Motor Constants - YASKAWA Varispeed E7 Instruction Manual And Parameter Description

Setting Motor Constants

Related Constants
Con-
stant
Number
E2-01 Motor rated current
E2-03 Motor no-load current
E2-05 Motor line-to-line resistance
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)
•
-94
6
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
Name
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.
Sets the motor no-load current.
This constant is automatically set during autotuning.
Sets the motor phase-to-phase resistance.
This constant is automatically set during autotuning.
Setting
Description
Range
0.32 to
0.00 to
1.89
0.000
65.000
Change
Factory during Access
Setting Opera- Level
tion
1.90 A
6.40 No Q
*2
*1
*2
No A
1,2
*3
9.842 Ω
to No A
*2