ADV100 • Functions description and parameters list 73
perform rapid current variations when load steps are suddenly applied.
A value of 5% allows a very fast response to load steps but with a loss of output voltage and thus power output (re-
duced power output).
The minimum value (1%) allows a maximum output voltage (around 98%) of the mains voltage to be achieved but
with loss of quality of the dynamic response.
Menu PAR Description UM Type FB BIT Def Min Max Acc Mod
19.13 2300 MinimumspeedOL rpm INT16 30 0 CALCI ERW __S
Setting of the minimum speed threshold in the sensorless vector control mode. Below this limit the sensorless regu-
lator is disabled.
Menu PAR Description UM Type FB BIT Def Min Max Acc Mod
19.14 2302 MinspeeddelayOL ms UINT16 200 0 5000 ERW __S
Setting of the delay for disabling the sensorless regulator.
Menu PAR Description UM Type FB BIT Def Min Max Acc Mod
19.15 2304 SpeedfilterOL ms FLOAT 5.0 0.1 20.0 ERWZ __S
Setting of the time constant for the estimated speed in sensorless vector mode. By increasing this parameter it is
possible to reduce the level of disturbance of the estimated speed, but the speed control dynamics are also lowered.
Menu PAR Description UM Type FB BIT Def Min Max Acc Mod
19.16 2306 FluxobservegainOL FLOAT 250.0 10.0 5000.0 ERW __S
Flux observer gain in open-loop ux vector control mode.
In case of instability, try changing the value and setting half or twice the default value.
Menu PAR Description UM Type FB BIT Def Min Max Acc Mod
19.17 2310 FluxweakeningOL ENUM Enable 0 1 ERWZ __S
Enables or disables ux reduction in the open-loop ux vector control mode.
If set to Disable, the ux is not reduced when the speed of the motor exceeds the nominal speed. This results in loss
of control and instability.
To prevent this problem, set the parameter to Enable.
In the open-loop mode a ux value of less than the nominal speed of the motor is advantageous in terms of stability.
0 Disable
1 Enable
Menu PAR Description UM Type FB BIT Def Min Max Acc Mod
19.18 2320 Magnetizationtime ms UINT16 256 128 4096 ERWZ __S
This parameter is used to slow down the magnetisation transient and prevent the motor shaft from rotating due to
the alignment of the stator and rotor.
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