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11-2
H
Using Inverter for Existing Standard Motor
When a standard motor is operated with the Inverter, a power loss is lightly higher than when operated
with a commercial power supply.
In addition, cooling effects also decline the low-speed range, resulting in an increase in the motor tem-
perature. Therefore, motor torque should be reduced in the low speed range.
The following figure shows allowable load characteristics of a standard motor.
If 100% torque is continuously required in the low-speed range, use a special motor for use with Invert-
ers.
Allowable Load Characteristics of Standard Motor
25% ED (or 15 min)
40% ED (or 20 min)
60% ED (or 40 min)
Torque (%)
Continuous
Frequency (Hz)
D
High-speed Operation
When using the motor at high-speed (60 Hz or more), problems may arise in dynamic balance and bear-
ing durability.
D
Torque Characteristics
The motor may require more acceleration torque when the motor is operated with the Inverter than
when operated with a commercial power supply. Check the load torque characteristics of the machine to
be used with the motor to set a proper V/f pattern.
D
Vibration
The 3G3MV Series employs high carrier PWM control to reduce motor vibration. When the motor is
operated with the Inverter, motor vibration is almost the same as when operated with a commercial
power supply.
Motor vibration may, however, become greater in the following cases.
•
Resonance with the natural frequency of the mechanical system
Take special care when a machine that has been operated at a constant speed is to be operated in
variable speed mode.
If resonance occurs, install vibration-proof rubber on the motor base.
•
Imbalance rotor
Take special care when the motor is operated at a high speed (60 Hz or more).
Using the Inverter for a Motor
Chapter 11
Содержание SYSDRIVE 3G3MV-A2001
Страница 1: ...Cat No I527 E1 04 USER S MANUAL SYSDRIVE 3G3MV Multi function Compact Inverter...
Страница 2: ......
Страница 3: ...USER S MANUAL Multi function Compact Inverter SYSDRIVE 3G3MVSERIES...
Страница 18: ......
Страница 23: ...Chapter 1 Overview 1 1 Functions 1 2 Nomenclature 1 3 New Features 1...
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Страница 33: ...Chapter 2 Design 2 1 Installation 2 2 Wiring 2...
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Страница 75: ...Chapter 3 Preparing for Operation and Monitoring 3 1 Nomenclature 3 2 Parameter Copy and Verify Function 3...
Страница 93: ...Chapter 4 Test Run 4 1 Procedure for Test Run 4 2 Operation Example 4...
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Страница 269: ...Chapter 9 Specifications 9 1 Inverter Specifications 9 2 Option Specifications 9...
Страница 293: ...9 25 D 3G3MV PRS2030V PRS3020V Four M4 holes for Inverter mounting use Three 5 dia holes Specifications Chapter 9...
Страница 294: ...9 26 D 3G3MV PRS2050V Four M5 holes for Inverter mounting use Three 6 dia holes Specifications Chapter 9...
Страница 297: ...9 29 D 3G3MV PRS1040V Three 5 dia holes Four M4 holes for Inverter mounting use Specifications Chapter 9...
Страница 303: ...Chapter 10 List of Parameters 10...
Страница 337: ...Chapter 11 Using the Inverter for a Motor 11...
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Страница 344: ...I527 E1 04...