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SINUS PENTA
PROGRAMMING GUIDE
372
/
486
41. POWER
DOWN
MENU
41.1.
Overview
In the case of power failure, the drive can be kept powered on by exploiting the kinetic energy of the motor and the load:
energy recovered due to motor slowing down is used to power the drive, thus avoiding losing the drive control when a
black–out occurs.
All parameters relating to the Power Down function are included in the Power Down submenu in the Configuration
menu.
The following options are available (parameter
C225
):
– [
NO
]: The function is disabled.
– [
YES
]: After the time set in
C226
(Power Down start delay), starting from the instant when power down occurs, a
deceleration ramp takes place (deceleration ramp in Power Down
C227
). The time period of the deceleration ramp can
be user-defined.
– [
YES V
]: In case of power down for a time longer than
C226
, the motor coasts to stop, so that DC bus voltage value is
kept constant at
C230
. To do so, a PI (proportional–integral) regulator is used, which is adjusted through parameter
C231
(proportional term) and
C232
(integral term).
– [
Alarm
]: In case of power down, when the time set in
C226
is over, alarm
A064
trips
(factory setting).
NOTE
If the mains loss deactivates the
ENABLE-A
and
ENABLE-B
commands, the motor cannot
coast to stop, because these commands are required for the hardware enable of IGBTs.
NOTE
If a drive is DC-powered by a Regenerative Penta (or an equivalent drive stabilizing DC bus
voltage), Power Down cannot occur (
C008
= xT Regen, where x can be 2, 4, 5, or 6 ).
Figure 63: Power Down (Example)
Содержание PENTA MARINE
Страница 173: ...PROGRAMMING GUIDE SINUS PENTA 173 486 Figure 27 Response to the step based on the value of Kp when Ti is kept constant...
Страница 196: ...SINUS PENTA PROGRAMMING GUIDE 196 486 Figure 34 ANALOG Mode Figure 35 DOUBLE DIGITAL Mode...
Страница 197: ...PROGRAMMING GUIDE SINUS PENTA 197 486 Figure 36 General structure of the parameterization of a digital output...