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4 Functional Description
4.8 Technical information
4.8.1 Sinus commutation
The 3564K024B CS and the MCBL 3003/06 S are characterised by a so-called sinus commutation. This
means that the preset rotating field is always ideally positioned in relation to the rotor. As a result,
torque fluctuations can be reduced to a minimum, even at very low speeds. In addition, the motor
runs particularly quietly.
In the current version, the sinus commutation has been enhanced to include so-called flat-top modu-
lation, which enables 15 % more modulation. As a result, higher no-load speeds are possible.
With the SIN0 command, the system can even be set so that over 30 % more modulation is possible.
In this mode, the sinus commutation in the upper speed range switches over to a block commuta-
tion. This full modulation enables the complete speed range of the motor to be utilised.
Command Function
Description
SIN
Sinus commutation
0: Full modulation
1: Limited to sinusoidal form (basic setting)
4.8.2 Current regulator and I
2
t current limitation
The FAULHABER Motion Controllers are equipped with an integral current controller, which enables
implementation of moment limitation.
The following parameters can be set:
Command Function
Description
LPC
Load Peak Current Limit
Load peak current
Value: 0 to 12 000 mA
LCC
Load Continuous Current Limit
Load continuous current
Value: 0 to 12 000 mA
CI
Load Current Integral Term
Load integral term for current controller
Value: 1...255
1.) Peak current
FAULHABER command:
LPC8000
… Set peak current to 8000 mA
The current is limited to the peak current, provided that the thermal current model calculates a non-
critical temperature.
2.) Continuous current
FAULHABER command:
LCC2800
… Set continuous current to 2800 mA
If the thermal current model reaches a critical temperature, continuous current is switched to.
Mode of operation of the current controller:
When the motor starts, the peak current is preset as the set-point for the current controller. As the
load increases, the current in the motor constantly increases until it finally reaches the peak current.