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SINUS PENTA
PROGRAMMING
INSTRUCTIONS
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Table 61: Programmable “Motor Tune” functions.
I074 Setting
Motor Rotation
Type of Tune
0: all Ctrl
no rotation
No
Automatic
estimation of the stator resistance and the leakage inductance. If
no-load current (C018) is zero, no-load current values are computed based on
the rated power of the connected motor.
Tuning mode required for the correct operation of the control algorithms.
1: FOC Auto
no rotation
No
Automatic
autotune of the current loop.
Tuning mode required for the correct operation of FOC algorithm.
If autotune of the current loop fails (Alarm
A065
Autotune KO trips), the current
loop may be manually tuned - see 4: FOC Man no rotation (current). While
autotuning, the system can monitor the reference current and the current
obtained in analog outputs AO2 and AO1 respectively.
2: FOC. Auto
+ rotation
Yes
Automatic
estimation of the rotor time constant.
Tuning mode required for the correct operation of FOC algorithm.
After entering the correct no-load current value (parameters
C021
,
C064
,
C107
for motors M1, M2 and M3 respectively) and tuning the current loop, the system
can measure the rotor time constant for no-load rotation of the connected motor
up to 90% of its constant speed.
3: VTC/FOC Man
rotation (speed)
Yes
Manual
tune of the speed loop.
Analog outputs AO1 and AO2 are displayed, showing the speed reference and
the speed value obtained with the preset parameters of the speed regulator (see
the SPEED LOOP AND CURRENT BALANCING MENU). Set the current
regulator’s parameters in order to reduce to a minimum the difference between
the two waveforms.
4: FOC Man no
rotation
(current)
No
Manual
tune of the current loop.
If automatic tuning 1: FOC Auto no rotation fails, the current loop may be
manually tuned. Display analog outputs AO1 and AO2, showing the current
reference value and the current value measured. Set the current regulator’s
parameters (see the FOC REGULATORS MENU) in order to reduce to a
minimum the difference between the two waveforms.
5: FOC Man no
rotation (flux)
No
Manual
tune of the flux loop.
The correct parameters of the flux regulator are calculated whenever the rotor
time constant value changes (see 2: FOC Auto rotation).
However, you can manually tune the flux loop.
Display analog outputs AO1 and AO2, showing the flux reference value and the
flux value obtained. Set the current regulator’s parameters in order to reduce to
a minimum the difference between the two waveforms.
See the FOC REGULATORS MENU.
NOTE
If
Manual tune
is selected, do the following to quit the function: disable the
ENABLE
command and set
I073
= [0: Disable].
NOTE
After tuning the rotor time constant, whenever the time constant value is manually
changed, parameters
P158
and
P159
are adjusted based on the time constant value that
has been set up.