gefran ADV200 Functions Description And Parameters List page 122

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
22.9.2 3402 Powerloss accel time
Setting of the acceleration time used in the Powerloss operating mode. The acceleration ramp time is used
when Powerloss mode = Restart has been selected and must be adjusted to suit machine requirements.
Menu PAR Description
22.9.3 3404 Powerloss decel time
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 regenera-
tion 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
generated.
This parameter must be adjusted so as to reach a compromise between low speed and high speed motor
operation.
Menu PAR Description
22.9.4 3410 Powerloss Vdcref
Setting of the voltage control limit on the DC-link during a controlled stop with loss of supply voltage The maxi-
mum value that can be set is the drive overvoltage limit.
Menu PAR Description
22.9.5 3420 Powerloss P gain
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 decel-
eration time.
Increase if the DC link voltage is set to a value other than the setpoint.
Menu PAR Description
22.9.6 3422 Powerloss I gain
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
22.9.7 3438 Powerloss mode
This parameter is used to configure 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 re-
stored. This information must be supplied from the outside via the Powerloss mains src digital input.
0 Ramp down
1 Restart
122
UM Type FB BIT
s FLOAT
UM Type FB BIT
s FLOAT
UM Type FB BIT
V FLOAT
UM Type FB BIT
A/V FLOAT
UM Type FB BIT
ms FLOAT
UM Type FB BIT
ENUM
Def Min
10.0 0.01
Def Min
2.0 0.01
Def Min
CALCF 0.0
Def Min
CALCF 0
Def Min
CALCF 1.0
Def Min
Ramp down 0
ADV200 • Functions description and parameters list
Max Acc Mod
100.0 ERW F__
Max Acc Mod
100.0 ERW F__
Max Acc Mod
CALCF ERWZS FV_
Max Acc Mod
100.000 ERWS F__
Max Acc Mod
1000.0 ERWS F__
Max Acc Mod
1 ERWZ F__