Set V/F Pattern; Base Frequency, Voltage (Pr.3, Pr.19, Pr.47) - Mitsubishi Electric F700 Instruction Manual

Set V/F pattern

3.4 Set V/F pattern

Purpose
Set motor ratings
Use special motor
3.4.1

Base frequency, voltage (Pr.3, Pr.19, Pr.47)

Used to adjust the inverter outputs (voltage, frequency) to the motor rating.
Pr. 2
page 62
Pr.4
Parameter
page 67
Number
Pr.18
page 62
Pr.20
3 Base frequency
page 74
Pr.46
page 53
Base frequency voltage
19
*
Pr.48
page 56
Second V/F (base frequency)
47
*
* The parameters can be set when Pr. 160 User group read selection = "0" (Refer to page 140)
Pr.19
(2) Set multiple base frequencies (Pr.47)
⋅ Use the second base frequency when you want to change the base frequency, e.g. when using multiple motors
by switching between them by one inverter.
⋅ Pr. 47 Second V/F (base frequency) is valid when the RT signal is on.
REMARKS
⋅ The RT signal acts as the second function selection signal and makes the other second functions valid. (Refer to page 88)
⋅ In the initial setting, the RT signal is assigned to the RT terminal. By setting "3" to any of Pr. 178 to Pr. 189 (Input terminal
function selection), you can assign the RT signal to the other terminal.
64
Base frequency, Base
frequency voltage
Adjustable 5 points V/F
Name Initial Value
50Hz
8888
9999
Output frequency
(Hz)
Pr.3
Pr.47
Parameter that must be set
Pr.3, Pr.19, Pr.47
Pr.71, Pr.100 to Pr.109
Setting Range
0 to 400Hz
0 to 1000V
8888
9999
0 to 400Hz
9999
(1) Setting of base frequency (Pr.3)
⋅ When operating a standard motor, generally set the rated
frequency of the motor to Pr. 3 Base frequency. When
running the motor using commercial power supply-inverter
switch-over operation, set Pr. 3 to the same value as the
power supply frequency.
⋅ If the frequency given on the motor rating plate is "60Hz"
only, always set to "60Hz".
⋅ When using the Mitsubishi constant-torque motor, set Pr. 3
to 60Hz.
Refer to page
64
66
Description
Set the frequency when the motor
rated torque is generated. (50Hz/
60Hz)
Set the base voltage.
95% of power supply voltage
Same as power supply voltage
Set the base frequency when the
RT signal is on.
Second V/F invalid