Servo Control (Sc) - Lenze L-force HighLine C 8400 Series Reference Manual

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.

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
– the nameplate data and equivalent circuit data of the motor (motor
• 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.
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
Firmware ≤ 11.00 - DMS 6.0 EN - 10/2011
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is carried out afterwards
- or -
leakage inductance and mutual motor inductance, slip compensation and
motor stator resistance) are entered manually.
L
8400 HighLine C | Reference manual
Motor control (MCTRL)
Servo control (SC)
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