ADV100 • Functions description and parameters list 93
If set to 1 the Powerloss function is enabled. In case of a power failure the function is enabled to try to control the
motor speed and prevent the intervention of the Undervoltage alarm.
Menu PAR Description UM Type FB BIT Def Min Max Acc Mod
22.6.2 3402 Powerlossacceltime s FLOAT 10.0 0.01 100.0 ERW F__
Setting of the acceleration time used in the Powerloss operating mode. The acceleration ramp time is used when
Powerlossmode=Restart has been selected and must be adjusted to suit machine requirements.
Menu PAR Description UM Type FB BIT Def Min Max Acc Mod
22.6.3 3404 Powerlossdeceltime s FLOAT 0.5 0.01 100.0 ERW F__
Setting of the deceleration time used during Powerloss operating mode.
The deceleration ramp time must be short enough (in case of low speeds) to allow the drive to enter regeneration
mode quickly, otherwise the Undervoltage alarm is generated. If the deceleration ramp time setting is too short,
when the drive enters regeneration mode it might not be able to control the DC link voltage and the Overvoltage
alarm would be generated.
Longer deceleration times are necessary at high motor speeds to prevent the Overvoltage alarm from being gener-
ated.
This parameter must be adjusted so as to reach a compromise between low speed and high speed motor operation.
Menu PAR Description UM Type FB BIT Def Min Max Acc Mod
22.6.4 3420 PowerlossPgain A/V FLOAT CALCF 0 100000 ERWS F__
Setting of the proportional gain during the Powerloss function.
Increase in case of Overvoltage error; the Undervoltage alarm can also be prevented by increasing the decelera-
tion time.
Increase if the DC link voltage is set to a value other than the setpoint.
Menu PAR Description UM Type FB BIT Def Min Max Acc Mod
22.6.5 3422 PowerlossIgain ms FLOAT CALCF 1.0 1000.0 ERWS F__
Setting of the integral gain during the Powerloss function.
Reduce if the DC link voltage is set to a value other than the setpoint.
Menu PAR Description UM Type FB BIT Def Min Max Acc Mod
22.6.6 3438 Powerlossmode ENUM Ramp down 0 1 ERWZ F__
This parameter is used to congure the behaviour of the Powerloss function when the mains supply is restored.
It is possible to set whether the drive should continue at zero speed or return to the setpoint when the mains supply
is restored. The drive does not automatically recognise the fact that the mains supply has been restored. This infor-
mation must be supplied from the outside via the Powerlossmainssrc digital input.
0 Ramp down
1 Restart
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