13.4
V/f characteristic control for asynchronous motor (VFC open loop)
The V/f characteristic control is a motor control for conventional frequency inverter applica-
tions. It is based on a simple and robust control mode for the operation of asynchronous
motors with a linear or square-law load torque characteristic (e.g. fan). Because of the mini-
mal parameterisation effort, such applications can be commissioned easily and quickly.
Preconditions
•
The V/f characteristic control is only suitable for asynchronous motors.
•
If you want to actuate a drive with a square-law V/f characteristic: Please always check
whether the corresponding drive is suitable for operation with a square-law V/f character-
istic!
•
Set the motor data according to the information on the nameplate of the motor.
13.4.1
Required commissioning steps
1
.
Check wiring by means of manual test modes.
2
.
Activate motor control type:
= "V/f characteristic control (VFC open loop) [6]".
3
.
Set limiting factors for the V/f characteristic:
1
.
, Rated mains voltage
2
.
, Base voltage
3
.
, Base frequency
4
.
Set and optimise current controller
Setting and optimising the current controller is only required if at least one of the following
functions is active:
•
Voltage vector control
Activate voltage vector control (Imin controller)
•
DC braking
•
Flying restart function
5
.
Select a characteristic shape suitable for the application
Define V/f characteristic shape
.
6
.
7
.
Activate voltage vector control (Imin controller)
8
.
9
.
10
.
11
.
12
.
Configuring the motor control
V/f characteristic control for asynchronous motor (VFC open loop)
Required commissioning steps
239
Содержание i950 Series
Страница 1: ...Inverters i950 servo inverters Commissioning EN ...
Страница 2: ......
Страница 312: ...15 Configure engineering port The given path leads you to the engineering port Configure engineering port 312 ...
Страница 397: ...19 Safety functions Supported safety functions for Basic Safety STO 4Safe Torque Off STO 398 Safety functions 397 ...
Страница 497: ......
Страница 498: ......
Страница 499: ......