Lenze 8400 - Manual (Page 219)

Lenze · 8400 protec HighLine · Reference manual · DMS 3.0 EN · 03/2013 · TD05
219
5 Motor control (MCTRL)
5.9 Servo control (SC)
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5.9 Servo control (SC)
Field-oriented servo control (SC) is based on a decoupled, separate control of the torque-producing
and the field-producing current component. The motor control is based on a field-oriented,
cascaded controller structure with feedback function and enables dynamic and stable operation in
all of the four quadrants.
Generally, the servo control offers the same advantages as the sensorless vector control (SLVC), i.e.
compared to the V/f characteristic control, the servo control (SC) can be used to achieve
• A higher maximum torque throughout the entire speed range
• A higher speed accuracy
• A higher concentricity factor
• A higher level of efficiency
• The implementation of torque-actuated operation with speed limitation
• The limitation of the maximum torque in motor and generator mode for speed-actuated
operation

Stop!
• Servo control (SC) is only suitable for asynchronous motors.
• We recommend to select a power-adapted combination of inverter and motor.
• The Lenze setting permits the operation of a power-adapted motor. Optimal
operation is only possible if either:
• the motor is selected via the Lenze motor catalogue
• the motor nameplate data are entered and motor parameter identification is
carried out afterwards
- or -
• the nameplate data and equivalent circuit data of the motor (motor leakage
inductance and mutual motor inductance, slip compensation and motor stator
resistance) are entered manually.
• When you enter the motor nameplate data, take into account the phase connection
implemented for the motor (star or delta connection). Only enter the data applying to
the selected connection type.
• Speed feedback parameterisation is required.