Changing The Control Method (Pr. 80, Pr. 81, Pr. 800) - Mitsubishi Electric FR-E720-0.1K(SC) Instruction Manual

Control mode
4.3.1

Changing the control method (Pr. 80, Pr. 81, Pr. 800)

Set when selecting the control method for Advanced magnetic flux vector control and General-purpose magnetic flux
vector control. The initial value is V/F control.
Select a control mode using Pr. 800 Control method selection.
Parameter
Name
Number
80 Motor capacity
81 Number of motor poles
Control method
800
selection
∗ Set a value other than "9999" in Pr. 80 and Pr. 81.
(1) Setting of the motor capacity and the number of motor poles (Pr. 80, Pr. 81)
Motor specifications (motor capacity and number of motor poles) must be set to select Advanced magnetic flux vector
control or General-purpose magnetic flux vector control.
Set the motor capacity (kW) in Pr. 80 Motor capacity and set the number of motor poles in Pr. 81 Number of motor poles.
(2) Selection of control method
Select the inverter control method for V/F control, Advanced magnetic flux vector control, and General-purpose magnetic
flux vector control.
Pr. 80, 81
Other than 9999
9999
(Pr. 80, Pr. 81 initial value)
∗ Control method is V/F control regardless of the setting value of Pr. 800 when "9999" is set in Pr. 80 Motor capacity or Pr. 81 Number of motor poles.
(3) Control method switching by external terminals (X18 signal)
Use the V/F switchover signal (X18) to change the control method (between V/F control and Advanced magnetic flux
vector control (General-purpose magnetic flux vector control)) with external terminal.
Turn the X18 signal ON to change the currently selected control method (Advanced magnetic flux vector control or
General-purpose magnetic flux vector control) to V/F control.
For the terminal used for X18 signal input, set "18" in any of Pr. 178 to Pr. 184 (input terminal function selection) to assign the
function.
REMARKS
Switch the control method using external terminal (X18 signal) during an inverter stop. If control method between V/F control and
Advanced (General-purpose) magnetic flux vector control is switched during the operation, the actual switchover does not take
place until the inverter stops. In addition, if control method is switched to V/F control during the operation, only second function
becomes valid as V/F control and second function are selected simultaneously in V/F control.
NOTE
Changing the terminal assignment using Pr. 178 to Pr. 184 (input terminal function selection) may affect the other
functions. Set parameters after confirming the function of each terminal.
Parameters referred to
Advanced magnetic flux vector control
General-purpose magnetic flux vector control
Pr. 178 to Pr. 184 (input terminal function selection)
Pr. 450 Second applied motor
Pr. 44 Second acceleration/deceleration time, Pr. 45 Second deceleration time
Pr. 46 Second torque boost
Pr. 47 Second V/F (base frequency)
Pr. 48 Second stall prevention operation current
Pr. 51 Second electronic thermal O/L relay
84
Initial
Setting Range
Value
9999
9999
20
Pr. 800 Setting
20
Advanced magnetic flux vector control
(Pr. 800 initial value)
30 General-purpose magnetic flux vector control
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Refer to page 86
Refer to page 89
Refer to page 139
Refer to page 118
Refer to page 85
Refer to page 98
Refer to page 92
Refer to page 116
0.1 to 15kW Set the applied motor capacity.
9999 V/F Control
2, 4, 6, 8, 10 Set the number of motor poles.
9999 V/F Control
Advanced magnetic flux vector control ∗
20
V/F
General-purpose magnetic flux vector control ∗
30
Control
Control Method
V/F control
Refer to page 109
Description