5-5
5-2 Operation in Vector Control
The Inverter in vector control mode calculates the vector of the operating
condition of the motor. Then the 150% rated output torque of the motor is
provided at an output frequency of 1 Hz. Vector control provides more pow-
erful motor control than V/f control and makes it possible to suppress
speed fluctuation with changes in loads.
To operate the Inverter in vector control mode, be sure to set the following
parameters.
n036 (rated motor current), n106 (rated motor slip), n107 (motor wire-to-
wire resistance), n110 (motor no-load current)
H
Setting the Rated Motor Current (n036)
·
Check the motor nameplate and set this parameter to the rated current.
·
This parameter is used as a vector control constant. Be sure to set the parameter cor-
rectly. This set value is also used for determining the electronic thermal characteristics
to protect the motor from overheating. The correct set value protects the motor from
burning that may result from overloading.
n036
Rated Motor Current
Register
0124
Hex
Changes during
operation
No
Setting
range
0.0% to 150% (A) of rated
output current of the Inverter
Unit of
setting
0.1 A
Default setting
See note
Note
The default setting for this parameter is the standard rated current of the maxi-
mum applicable motor.
H
Setting the Rated Motor Slip (n106)
·
Set the rated motor slip in n106.
·
This parameter is used as a vector control constant. Be sure to set the parameter cor-
rectly. This set value is used for slip compensation as well.
·
Calculate the rated motor slip value from the rated frequency (Hz) and rpm on the
motor nameplate by using the following formula.
Rated slit value (Hz) = Rated frequency (Hz) -- Rated rpm x Number of poles/120
n106
Rated Motor Slip
Register
016A
Hex
Changes during
operation
Yes
Setting
range
0.0 to 20.0 (Hz)
Unit of
setting
0.1
Hz
Default setting
See note
Note
The default setting for this parameter is the standard motor slip of the maximum
applicable motor.
Basic Operation
Chapter 5
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...