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5-7
5-3 Operation in V/f Control
This mode, which is used by conventional general-purpose inverters, is
convenient when replacing a conventional model with the 3G3MV Inverter
because the Inverter in this mode can be operated without considering the
constants of the motor. Furthermore, set the Inverter to this mode if the
Inverter is connected to than two or more motors or special motors, such as
high-speed motors.
To operate the Inverter in V/f control mode, be sure to set n036 for the rated
motor current and n011 through n017 for the V/f pattern.
5-3-1 Setting the Rated Motor Current (n036)
·
Check the motor nameplate and set this parameter to the rated current.
·
This set value is 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 1
Note 1.
The default setting for this parameter is the standard rated current of the maxi-
mum applicable motor.
Note 2.
Motor overload detection (OL1) is disabled by setting the parameter to 0.0.
5-3-2 Setting the V/f Patterns (n011 to n017)
·
Set the V/f pattern so that the motor output torque is adjusted to the required load
torque.
·
The 3G3MV incorporates an automatic torque boost function. Therefore, a maximum
of 150% torque can be output at 3 Hz without changing the default settings. Check the
system in trial operation and leave the default settings as they are if no torque charac-
teristic changes are required.
n011
Maximum Frequency (FMAX)
Register
010B
Hex
Changes during
operation
No
Setting
range
50.0 to 400.0 (Hz)
Unit of
setting
0.1
Hz
Default setting
60.0
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...