4.4.3
Basic motor settings
Check the following default settings for the motor and motor control and adapt them, if
required.
Drive behaviour by default
By default, the V/f characteristic control with a linear characteristic is preset as motor control
for asynchronous motors. The V/f characteristic control is a motor control for conventional
frequency inverter applications. It is based on a simple and robust control mode for the opera-
tion of asynchronous motors with a linear or square-law load torque characteristic (e.g. fan).
Because of the minimal parameterisation effort, such applications can be commissioned easily
and quickly.
The default settings of the parameters ensure that the inverter is ready for operation imme-
diately and the motor works adequately without further parameterisation if an inverter and
a 50 Hz asynchronous machine with matching performances are assigned to each other.
Parameter
Name / value range / [default setting]
Info
0x2B01:001
(PAR 303/001)
V/f characteristic data: Base voltage
(V/f char. data: Base voltage)
0 ... [230]* ... 5000 V
•
Default setting depending on the size.
Voltage in the reference point of the V/f characteristic.
•
The V/f base voltage is usually set to the rated motor voltage
0x2C01:007 (PAR 320/007)
.
0x2B01:002
(PAR 303/002)
V/f characteristic data: Base frequency
(V/f char. data: Base frequency)
0 ... [50]* ... 599 Hz
•
Default setting depending on the size.
Frequency in the reference point of the V/f characteristic.
•
The V/f base frequency is usually set to the rated motor frequency
0x2C01:005 (PAR 320/005)
.
0x2C00
(PAR 300)
Motor control type
(Motor ctrl mode)
•
Setting can only be changed if controller inhibit is
active.
Selection of the motor control type.
4 Sensorless vector control (SLVC)
This control type is used for sensorless vector control of an asynchro-
nous motor.
4
Sensorless vector control (SLVC)
^
82
6 V/f characteristic control (VFC open loop)
This control mode is used for the speed control of an asynchronous
motor via a V/f characteristic and is the simplest control mode.
4
V/f characteristic control
^
81
0x2C01:010
Motor parameters: Name
0x6075
(PAR 323)
Motor rated current
(Motor current)
0.001 ... [1.700]* ... 500.000 A
•
Default setting depending on the size.
•
Setting can only be changed if controller inhibit is
active.
The rated motor current to be set here serves as a reference value for
different parameters with a setting/display in percent.
Relevant parameters:
•
DC braking: Current
0x2B84:001 (PAR 704/001)
•
Flying restart circuit: Current
0x2BA1:001 (PAR 718/001)
•
Motor overload monitoring (i²*t): Maximum utilisation [60 s]
0x2D4B:
001 (PAR 308/001)
•
Max current
0x6073 (PAR 324)
•
Current actual value
0x6078 (PAR 103)
All possible settings with regard to the motor and motor control are described in the "
Motor
control
" chapter.
^
77
Commissioning
Parameter setting
Basic motor settings
20
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