Notes On Motor Control - Lenze L-force HighLine C 8400 Series Reference Manual

3.2

Notes on motor control

In the Lenze setting, the V/f characteristic control (VFCplus) as motor control is set in
C00006 with a linear characteristic.
 V/f characteristic control (VFCplus) is a motor control mode for classic frequency
inverter applications on the basis of a simple and robust control procedure for the
operation of machines with a linear or quadratic load torque characteristic (e.g. fans).
 The presettings of the parameters ensure that the controller is ready for operation right
away and the motors works adequately without further parameterisation if a
controller and a 50 Hz asynchronous machine with matching performances are
assigned.

Note!
Check the nameplate data against the motor data set in the controller. Further
information is provided in the chapter
Recommendations for the following application cases:
 If the controller and motor differ greatly in terms of performance:
Set the Imax limit (in motor mode) in
 If a high starting torque is required:
When the motor is idling, set a value for Vmin boost in
rated motor current flows at a field frequency of f = 3 Hz (display in C00058).
 For noise optimisation:
In C00018, set a switching frequency of "16 kHz var./drive-opt.".
 If a high torque must be provided at small speeds without feedback:
Select "Sensorless vector control (SLVC) as motor control mode in C00006.
Related topics:
Motor control (MCTRL)
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8400 HighLine C | Reference manual
"Motor selection/Motor
C00022
( 131)
L
Notes on motor control
data".
to 2x rated motor current.
C00016 which ensures that the
Commissioning
( 132)
55