Yaskawa VS-626 MC5 - Manual (Page 152)

Advanced Operation
7.2.2 Setting/Adjusting Motor Constants
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D The default setting depends upon the Inverter capacity.
(The table shows the default settings for 200 V class, 0.4 kW Inverters.) (See page NO TAG.)
D Set the no-load current (E2-03) at the rated voltage and rated frequency. Normally this value isn’t
shown on the motor nameplate, so it might be necessary to contact the motor manufacturer.
Number of Motor Poles: E2-04
User
Change
during Setting Factory
Valid Access Levels User
Constant
Number
Name
during
Opera-
tion
Setting
Range Unit
Factory
Setting Open Loop
Vector Flux Vector
E2-04 Number of motor poles 2 to 48 -- 4 Q
D Set the number of poles (E2-04) shown on the motor nameplate.
Motor Line-to-line Resistance: E2-05
User
Change
during Setting Factory
Valid Access Levels
User
Constant
Number
Name
during
Opera-
tion
Setting
Range
Unit
Factory
Setting Open Loop
Vector
Flux Vector
E2-05
Motor line-to-line resist-
ance 0.000 to
65.000 9.842 A A
D The default setting depends upon the Inverter capacity.
(The table shows the default settings for 200 V class, 0.4 kW Inverters.) (See page NO TAG.)
D Set the motor terminal resistance (U--V, V--W, and W--U) in constant E2-05.
D Normally this value isn’t shown on the motor nameplate, so it might be necessary to contact the motor
manufacturer for the terminal resistance at the insulation class temperature. Use the following equa-
tions to calculate the resistance value from the terminal resistance of a test report.
x E-class insulation: Terminal resistance at 75 qC in the test report (:) x 0.92
x B-class insulation: Terminal resistance at 75 qC in the test report (:) x 0.92
x F-class insulation: Terminal resistance at 115 qC in the test report (:) x 0.87
Motor Leak Inductance: E2-06
User
Change
during Setting Factory
Valid Access Levels User
Constant
Number
Name
during
Opera-
tion
Setting
Range Unit
Factory
Setting Open Loop
Vector Flux Vector
E2-06 Motor leak inductance 0.0 to 30.0 % 18.2 A A
D The default setting depends upon the Inverter capacity.
(The table shows the default settings for 200 V class, 0.4 kW Inverters.) (See page NO TAG.)
D Set the voltage drop (caused by the motor’s leakage inductance) as a percentage of the motor’s rated
voltage in constant E2-06.
D This constant does not normally require setting because the Inverter automatically compensates during
operation.
D Normally this value isn’t shown on the motor nameplate, so it might be necessary to contact the motor
manufacturer. It is also acceptable to set the loss (caused by the motor’s leakage inductance) as a per-
centage.
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