Lenze · 8400 HighLine · Reference manual · DMS 12.0 EN · 06/2017 · TD23 53
3 Commissioning
3.2 Notes on motor control
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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 inverter is immediately ready for operation
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.
Recommendations for the following application cases:
• If the inverter and motor differ greatly in terms of performance:
Set the Imax limit (in motor mode) in C00022
to 2x rated motor current.
• If a high starting torque is required:
When the motor is idling, set a value for Vmin boost in C00016
which ensures that the 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)
( 134)
Note!
Check the nameplate data against the motor data set in the inverter. Further
information is provided in the chapter "Motor selection/Motor data
". ( 135)
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