Basic Motor Settings - Lenze i55AE125B Manual

5.3.3

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
an asynchronous motor* Hz asynchronous machine with matching performances are
assigned to each other.
* Depending on the device/mains frequency either 50-Hz asynchronous motor or 60-Hz asyn-
chronous motor.
Parameter Name / value range / [default setting]
0x2B01:001 V/f shape data: Base voltage
(P303.01) (V/f shape data: Base voltage)
0 ... [230]* ... 5000 V
* Default setting depending on the size.
0x2B01:002 V/f shape data: Base frequency
(P303.02) (V/f shape data: Base frequency)
Device for 50-Hz mains: 0 ... [50]* ... 1500 Hz
Device for 60-Hz mains: 0 ... [60]* ... 1500 Hz
* Default setting depending on the size.
0x2C00 Motor control mode
(P300.00) (Motor ctrl mode)
• Setting can only be changed if the inverter is inhibi-
ted.
2 Servo control (SC ASM)
3 Sensorless control (SL PSM)
version 02.00)
4 Sensorless vector control (SLVC)
6 V/f characteristic control (VFC open loop)
7 V/f characteristic control (VFC closed loop)
(from version 04.00)
0x2C01:010 Motor parameters: Motor name
0x6075 Motor rated current
(P323.00) (Motor current)
0.001 ... [1.700]* ... 500.000 A
* Default setting depending on the size.
• Setting can only be changed if the inverter is inhibi-
ted.
All possible settings with regard to the motor and motor control are described in the
control" chapter.
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Info
Base voltage and base frequency define the V/f ratio and thus the gradi-
ent of the V/f characteristic.
• The V/f base voltage is usually set to the rated motor voltage
0x2C01:007
• The V/f base frequency is usually set to the rated motor frequency
0x2C01:005
Selection of the motor control type.
This control mode is used for servo control of an asynchronous motor.
(from version 02.00)
4Servo control for asynchronous motors (SC-ASM)
This control type is used for the sensorless control of a synchronous
(from
motor.
• Control mode is possible up to a rated power of maximally 22 kW.
4Sensorless control for synchronous motors (SL-PSM)
This control type is used for sensorless vector control of an asynchro-
nous motor.
4Sensorless vector control (SLVC)
This control mode is used for the speed control of an asynchronous
motor via a V/f characteristic and is the simplest control mode.
4V/f characteristic control (VFC)
The control mode is used for speed control of an asynchronous motor
via a V/f characteristic with speed feedback.
A motor encoder must be connected to the inverter and set as feedback
system for the motor control.
4V/f characteristic control (VFC closed loop)
The name (e.g. " 1") can be freely selected by the user.
If the motor in the engineering tool has been selected from the "motor
catalog", the respective motor name is automatically entered here
(example: "MDSKA080-22, 70").
The rated motor current to be set here serves as a reference value for
different parameters with a setting/display of a current value in percent.
Example:
• Motor rated current = 1.7 A
• Max current
Commissioning
Basic motor settings
(P320.07).
(P320.05).
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0x6073 (P324.00) = 200 % Motor rated current = 3.4 A
"Motor
Parameter setting
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