PROGRAMMING GUIDE
SINUS PENTA
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C025 (C068, C111) Rotor Time Constant
C068 (Motor 2)
Range
0 ÷ 5000 0 ÷ 5000msec
Function
This parameter defines the rotor time constant of the connected motor.
If the rotor time constant is not stated by the motor manufacturer, it can be
obtained through the autotune function (see t
he FIRST STARTUP section and
the AUTOTUNE MENU).
NOTE
Whenever one of these parameters is written, the drive automatically computes and saves
the parameters of PI flux regulator and FOC control: proportional constant for motor 1 P158
(P165 for motor 2, P172 for motor 3) and integral time P159 (P166 for motor 2, P173 for
C026 (C069, C112) Time Constant of Bus Voltage Low-pass Filter
C069 (Motor 2)
Range
0 ÷ 32000 0.0 ÷ 3200.0 ms
Function
This parameter defines the time constant of the low-pass filter of the bus
voltage readout.
Changing
this value can avoid motor oscillations, especially when no load is
connected to the motor.
C028 (C071, C114) Min. Motor Speed
C071 (Motor 2)
Range
-32000 ÷ 32000 (*) -32000 ÷ 32000 rpm (*)
Function
This parameter defines the minimum speed of the connected motor. When
references forming the global reference are at their min. relative value, the global
reference equals the min. speed of the connected motor.
Example:
CONTROL METHOD MENU
C143 →[1: REF] Selection of reference 1 source
C144 →[2: AIN1] Selection of reference 2 source
C145 →[0: Disable] Selection of reference 3 source
C146 →[0: Disable] Selection of reference 4 source
INPUTS FOR REFERENCES MENU
P050 →[0: ± 10V] Type of reference for REF input
P051 →[ – 10V] Value of the min. reference for REF input
P052 →[ +10V] Value of the max. reference for REF input
P055 →[0: ± 10V] Type of reference for AIN1 input
P056 →[ – 5 V] Value of min. reference for AIN1 input
P057 →[ +5 V] Value of max. reference for AIN1 input
The speed reference is the min. speed set in C028
(motor 1) when both REF input
and AIN1 input values are lower than or equal to the minimum values set in P051
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