gefran SIEIDrive ADV100, Описание функций и список параметров, Страница: 101 / 172

ADV100 • Functions description and parameters list
101
22.10 - FUNCTIONS/VF ENERGY SAVE
With V/f control, the Energy saving function automatically reduces the output voltage requested by the configured V/f
curve, making it possible to save energy without changing the speed of the motor.
The output voltage can be reduced for as long as it is possible to reduce the flux current without increasing the torque
current. If the output voltage is reduced too much the drive will be unable to maintain a constant motor speed.
If the Energy saving function is enabled, the output voltage is only reduced if the drive is in the drive ready condition
and the speed reference is within the following range:
25% of
Vf frequency (par. 2408) < speed reference < Vf frequency (par. 2408)
When the speed ramp output is constant for a time that can be set in parameter 3324 Energysave delay the Energy
saving function automatically reduces the output voltage. The output voltage reduction phase stops and is maintained
when the torque current moves out of the range configured in parameter 3326 Energysave trqband 1 .
In the low output voltage condition, if there is a change in the ramp input reference or in the load conditions bringing
the torque current outside the range set in parameter 3328 Energysave trqband 2 , the Energy saving function auto-
matically restores the output voltage.
The energy saving function attempts to reduce the output voltage to a fixed minimum limit that is 70% of the voltage
defined by the V/f curve.
Nota:
For increased energy saving, disable the function set in parameter 2404 Voltage torque boost or reduce the boost set in
parameter 2402 Voltage boost gain as these functions tend to maintain the flux current at a constant level rendering the
Energy saving function ineffective.
Menu PAR Description UM Type FB BIT Def Min Max Acc Mod
22.10.1 3320 Energysave enable BIT 0 0 1 ERWZ _V_
This parameter enables the energy saving function
0 Enabled
1 Disabled
If set to 0 the energy saving function is disabled
If set to 1 the energy saving function is enabled
Menu PAR Description UM Type FB BIT Def Min Max Acc Mod
22.10.2 3322 Energysave spd band rpm INT16 2 0 100 ERW _V_
This parameter is used to set a speed used to calculate a range around the ramp output. When the ramp reference
is inside this range it is constant and the ramp output has reached the steady state. The Energy saving function uses
this information to decide whether or not to apply the output voltage reduction.
This parameter can be changed if there are small, continuous changes in the speed of the speed reference to avoid
continuously entering/leaving the output voltage reduction condition.
Menu PAR Description UM Type FB BIT Def Min Max Acc Mod
22.10.3 3324 Energysave delay s FLOAT 3.0 0.1 120.0 ERW _V_
This parameter is used to set the delay, once the speed set point has been reached, before starting to reduce the
output voltage.
Menu PAR Description UM Type FB BIT Def Min Max Acc Mod
22.10.4 3326 Energysave trqband 1 perc FLOAT 10.0 0.0 100.0 ERWS _V_
This parameter is used to set a percentage used to calculate a range around the torque current the moment the
output voltage starts to be reduced.
The torque current value is saved the moment the voltage starts to be reduced. if the torque current is not within the
calculated range during the output voltage reduction phase, output voltage reduction is aborted.