2.6 E: Motor Parameters
256 YASKAWA TOEPYAIGA5002A GA500 DRIVE PROGRAMMING
■ E4-07: Motor 2 Saturation Coefficient 1
No.
(Hex.)
Name Description
Default
(Range)
E4-07
(0343)
Motor 2 Saturation
Coefficient 1
Sets the motor 2 iron-core saturation coefficient at 50% of the magnetic flux.
0.50
(0.00 - 0.50)
The drive sets this parameter during Rotational Auto-Tuning. The drive uses this value when it operates the motor in
the constant output range.
■ E4-08: Motor 2 Saturation Coefficient 2
No.
(Hex.)
Name Description
Default
(Range)
E4-08
(0344)
Motor 2 Saturation
Coefficient 2
Sets the motor 2 iron-core saturation coefficient at 75% of the magnetic flux.
0.75
(E4-07 - 0.75)
The drive sets this parameter during Rotational Auto-Tuning. The drive uses this value when it operates the motor in
the constant output range.
■ E4-09: Motor 2 Mechanical Loss
No.
(Hex.)
Name Description
Default
(Range)
E4-09
(033F)
Expert
Motor 2 Mechanical Loss
Sets the mechanical loss of motor 2. It is set as a percentage of E4-11 [Motor 2 Rated Power].
Usually it is not necessary to change this setting.
0.0%
(0.0 - 10.0%)
Adjust this parameter in these conditions. The drive adds the configured mechanical loss to the torque reference value
as a torque compensation value:
• There is a large quantity of torque loss from motor bearing friction.
• There is a large quantity of torque loss in fans and pumps.
■ E4-10: Motor 2 Iron Loss
No.
(Hex.)
Name Description
Default
(Range)
E4-10
(0340)
Motor 2 Iron Loss
Sets the motor iron loss for motor 2.
Determined by o2-04, C6-01
(0 - 65535 W)
■ E4-11: Motor 2 Rated Power
No.
(Hex.)
Name Description
Default
(Range)
E4-11
(0327)
Motor 2 Rated Power
Sets the motor rated power in the units from o1-58 [Motor Power Unit Selection].
Determined by o2-04, C6-01
(0.00 - 650.00 HP)
Auto-Tuning automatically sets this parameter to the value input for [Motor Rated Power].
◆ E5: PM Motor Settings
E5 parameters are used to set PM motor data.
Set E5-01 to the motor code when using PM motors recommended by Yaskawa. E5 and other related motor
parameters will be automatically set to the optimal values.
Perform Auto-Tuning for all other PM motors. If information from motor nameplates or test reports is available, the
E5 parameters can be manually entered.
Note:
• The keypad shows E5-xx only when A1-02 = 5, 6 [Control Method Selection = OLV/PM, AOLV/PM].
• E5-xx parameters are not reset when the drive is initialized using parameter A1-03 [Initialize Parameters].
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