YASKAWA L1000A - L1: Motor Protection

5.5 E: Motor Parameters
192 YASKAWA ELECTRIC SIEP C710616 38F YASKAWA AC Drive - L1000A Technical Manual
◆ E4: Motor 2 Parameters
E4 parameters contain the motor data for motor 2. These parameters are usually set automatically during the Auto-Tuning
process for vector control modes (Rotational Auto-Tuning, Stationary Auto-Tuning 1 and 2). If Auto-Tuning cannot be
performed, refer to Auto-Tuning Fault Detection on page 307 for additional details.
Note: The function for switching between two motors cannot be used with a PM motor. E4- parameters are hidden when a PM
motor control mode is selected (A1-02 = 7).
■ E4-01: Motor 2 Rated Current
Protects the motor and calculates torque limits. Set E4-01 to the full load amps (FLA) stamped on the nameplate of motor
2.
If Auto-Tuning completes successfully, the value entered to T1-04 will automatically be saved to E4-01.
Note: 1. The display resolution depends on the rated output power of the drive. Models CIMR-LU20008 to 20033, 40005 to 40018,
and 50003 to 50013 display values in 0.01 A units, while models CIMR-LU20047 to 20415, 40024 to 40605, and
50017 to 50200 display values in 0.1 A units.
2. An oPE02 error will occur if the motor rated current in E4-01 is set lower than the motor no-load current in E4-03. Set E4-03 correctly
to prevent this error.
■ E4-02: Motor 2 Rated Slip
Sets the motor 2 rated slip frequency and is the basis for slip compensation value. The drive calculates this value
automatically during Auto-Tuning (Rotational Auto-Tuning and Stationary Auto-Tuning 1, 2). Refer to E2-02: Motor
Rated Slip on page 188 for information on calculating the motor rated slip.
■
E4-03: Motor 2 Rated No-Load Current
Sets the no-load current for motor 2 in amperes when operating at the rated frequency and the no-load voltage. The drive
sets E2-03 during the Auto-Tuning process (Rotational Auto-Tuning and Stationary Auto-Tuning 1, 2). The motor
no-load current listed in the motor test report can also be entered to E2-03 manually. Contact the motor manufacturer for
a copy of the motor test report.
Note: The display resolution depends on the rated output power of the drive. Models CIMR-LU20008 to 20033, 40005 to
40018, and 50003 to 50013 display values in 0.01 A units, while models CIMR-LU20047 to 20415, 40024 to
40605, and 50017 to 50200 display values in 0.1 A units.
■ E4-04: Motor 2 Motor Poles
Sets the number of poles for motor 2. If Auto-Tuning completes successfully, the value entered to T1-06 will be
automatically saved to E4-04.
No. Parameter Name Setting Range Default
E4-01 Motor 2 Rated Current 10 to 200% of the drive rated current. Determined by o2-04
No. Parameter Name Setting Range Default
E4-02 Motor 2 Rated Slip 0.00 to 20.00 Hz Determined by o2-04
No. Parameter Name Setting Range Default
E4-03 Motor 2 Rated No-Load Current 0 to [E4-01] Determined by o2-04
No. Parameter Name Setting Range Default
E4-04 Motor 2 Motor Poles 2 to 48 4
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