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 temperature. 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 Inverters.
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 (above the motor rated frequency), problems may
arise in dynamic balance and bearing 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.
Using the Inverter for a Motor
Chapter 11
Summary of Contents for SYSDRIVE 3G3MV A2002
Page 1: ...USER S MANUAL SYSDRIVE 3G3MV Multi function Compact Inverter Cat No I527 E2 02...
Page 15: ...Chapter 1 Overview 1 1 Function 1 2 Nomenclature 1 3 New Features 1...
Page 24: ...Chapter 2 Design 2 1 Installation 2 2 Wiring 2...
Page 89: ...Chapter 4 Test Run 4 1 Procedure for Test Run 4 2 Operation Example 4...
Page 286: ...Chapter 9 Specifications 9 1 Inverter Specifications 9 2 Option Specifications 9...
Page 311: ...Chapter 10 List of Parameters 10...
Page 342: ...Chapter 11 Using the Inverter for a Motor 11...
Page 348: ...Appendix A Standard Models...