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5 - 9
5 Basic Settings
Multi-function Compact Inverter 3G3MX2-V1 User’s Manual (I585-E1)
5-2 V/f Co
ntr
o
l Setting
s
5
5-
2-1 C
ontrol Method (
V
/f Char
acter
istics)
5-2
V/f Control Settings
• V/f control is a method of controlling a motor by setting the output voltage and frequency of the
inverter as V/f characteristics, which is effective for using the inverter easily.
• To set V/f characteristics (output voltage and output frequency), set the 1st/2nd Control Method to 00
to 02.
*1. Sensorless vector control can be set in the heavy load mode only. For details on sensorless vector control,
refer to
6-1 Sensorless Vector Control
on page 6-3.
*2. Setting the Inverter Mode Selection (b171) to 03 (PM motor) does not cause the parameters A044/A244 to be
displayed after initialization.
*3. To enable the switching to the 2nd control, allocate one of the Multi-function Input S1 to S7 Selection (C001 to
C007) to 08 (SET) and then turn ON that terminal.
This setting is suitable for cart, conveyor, overhead traveling crane, and other applications where a
torque is required, independent of the motor rotation speed.
It enables the output of a constant torque based on the frequency, according to the V/f characteristics
that represent the proportional relationship between the output frequency and the output voltage.
However, the output voltage is proportional from 0 Hz to the base frequency, it is constant independent
of the frequency, from the base frequency to the maximum frequency.
For the base frequency, set the rated frequency of the motor.
For the maximum frequency, set the highest frequency required for your application, within the maxi-
mum frequency of the motor.
5-2-1
Control Method (V/f Characteristics)
Parameter
No.
Function name
Data
Default
data
Unit
A044/A244
1st/2nd Control
Method
*2*3
00:
Constant torque characteristics (VC)
00
−
01:
Reduced torque characteristics (VP 1.7th power
(VC at low speed))
02:
Free V/f setting
03:
Sensorless vector control
*1
Constant Torque Characteristics (VC)
0
Output frequency
[Hz]
Maximum Frequency
Base
Frequency
Output
voltage
(100%)
Summary of Contents for SYSDRIVE MX2 SERIES
Page 1: ...Multi function Compact Inverter MX2 Series Type V1 User s Manual I585 E1 01 3G3MX2 A V1 ...
Page 32: ...CONTENTS 29 Multi function Compact Inverter 3G3MX2 V1 User s Manual I585 E1 ...
Page 108: ...2 Design 2 48 Multi function Compact Inverter 3G3MX2 V1 User s Manual I585 E1 ...
Page 176: ...4 Parameter List 4 42 Multi function Compact Inverter 3G3MX2 V1 User s Manual I585 E1 ...
Page 538: ...10 Troubleshooting 10 22 Multi function Compact Inverter 3G3MX2 V1 User s Manual I585 E1 ...
Page 598: ...12 Options 12 50 Multi function Compact Inverter 3G3MX2 V1 User s Manual I585 E1 ...
Page 614: ...Appendices A 16 Multi function Compact Inverter 3G3MX2 V1 User s Manual I585 E1 ...
Page 615: ...I 1 Multi function Compact Inverter 3G3MX2 V1 User s Manual I585 E1 I Index ...