NOTE
The motor cannot be started until the calibration process has been completed.
NOTE
If the calibration process cannot be completed, it is possible to manually enter the parameters or
stator resistance (Rs) and stator inductance (Ls) in the motor parameters menu (default password
002). These data can be provided by the motor manufacturer or obtained through measurements. If
you do not have these data and the self-calibration process is not successful, contact the technical
support service.
9.4.3. Adjusting the FOC control
The FOC control algorithm checks current (torque) and speed with defined response dynamics.
The FOC dynamics is set by default to a value sufficient to guarantee accurate and oscillation-free control in most
applications.
In some cases, however, it may be necessary to increase (in case of frequency oscillations) or to lower (in case of
overcurrent or igbt trip alarms) the "FOC dynamic" setting in the motor parameters menu (default password 002)
according to the following table:
Configuration FOC dynamics
Motor cables shorter than 100 m and no filter between inverter and motor. 200
Motor cables shorter than 100 m and a dV/dt filter between the inverter and the motor. 150
Motor cables longer than 100 m and a dV/dt filter between the inverter and the motor. 100
Presence of a sine filter between the inverter and the motor. 50 or 40 or less
WARNING
The incorrect configuration of the FOC dynamics may cause:
• Speed oscillations if the FOC dynamics is too slow.
• Overcurrent or igbt trip alarms if the FOC dynamics is too fast.
Intervene promptly by appropriately adjusting the "FOC Dynamics" parameter if the conditions listed
above are present. Failure to act may lead to damages to the inverter, the motor and the system.
9.5. Initial display
When the device is switched on, the control firmware version (LCD = X.XX) and the power firmware version (INV =
X.XX) are communicated to the user.
Subsequently, or as soon as the first initial set-up has been completed, the initial view opens.
The first line in the display shows the status of the device:
• Inv: ON XX.X Hz if the device is enabled for the control and the motor is running at the indicated frequency.
• Inv: ON Mot: OFF if the device is enabled for motor control and the motor is not running (ex: the pump has been
stopped because it has reached its minimum stop frequency under constant pressure operation).
• Inv: OFF Mot: OFF if the device is not enabled for motor control, which is therefore stopped.
When the COMBO function is activated, the address of the corresponding device appears next to the item Inv.
9.5.1. Operating parameters
Parameter Description
p =XX.X [bar] p is the measured pressure value.
By pressing the ENTER key, the set pressure value appears<XXX.X>.
f = XXX.X [Hz] Parameter f represents the frequency (Hz) with which the inverter is powering the motor. If the control
mode is set on "fixed frequency", it is possible to make a real-time variation of the working frequency
by means of the ENTER key while the symbol set appears on the display. Press the ENTER key
again to exit this mode, as evidenced by the disappearance of the symbol set; this also saves the
new working frequency.
V_in=XXX [V] / I=XX.X [A] Parameter V represents the power supply voltage. This appears only while the motor is in the OFF
state. In the ON state, parameter I is displayed instead of the supply voltage, which represents the
intensity of current (A) absorbed by the motor.
VASCO - VAriable Speed COntroller
36
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