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104
ADV200
WA • Functions description and parameters list
22.10 - FUNCTIONS/VDC CONTROL
This function is used to control the voltage and power recovered in the DC link during regeneration (e.g. braking
ramp). When this function is enabled, if the power regenerated by the load during braking increases the DC link volt-
age, the drive prevents triggering of the
Overvoltage
alarm by limiting the regenerated current.
The
Vdc control function
is enabled automatically (if parameter
3450 Vdc control function
is set to 1) when the DC
link voltage exceeds a preset threshold, depending on the mains voltage and lower than the
Overvoltage
threshold.
This threshold is also used for the regulator that controls the regenerated current limit.
If the
Vdc control function
is enabled, the motor speed need not follow the set ramp.
If the regulator is unable to limit the regenerated power during the deceleration ramp and prevent the
Overvoltage
alarm from being generated, the ramp can be temporarily blocked by setting parameter
754 Ramp freeze src
using
the information in
Vdc ctrl ramp freeze
.
The function remains enabled until the power regenerated by the load is cancelled and the DC link voltage falls below
the disable threshold (below the enable threshold).
Menu
PAR
Description
UM
Type
FB BIT
Def
Min
Max
Acc
Mod
22.10.1 3450 Vdc control function
ENUM
Disable
0
1
ERWZ VS
This parameter is used to enable the
Vdc control function
.
0
Disable
1
Enable
If set to
0
the function is disabled: in case of power recovery the Sovratensione alarm is generated.
If set to
1
the function is enabled: in case of power recovery the function is enabled and attempts to control
the current regenerated by the motor and prevent the
Overvoltage
alarm from being generated.
Menu
PAR
Description
UM
Type
FB BIT
Def
Min
Max
Acc
Mod
22.10.21 3470 Vdc control P gain
A/V FLOAT
CALCF
0.0
100.000
ERWS VS
Setting of the proportional gain used during the
Vdc control function
. The set value must be increased
if the
Overvoltage
alarm is generated. The Sovratensione alarm can also be prevented by lengthening the
deceleration ramp. The value of this parameter must also be increased 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
22.10.3 3472 Vdc control I time
ms
FLOAT
CALCF
1.0
1000.0
ERWS VS
Setting of the integral time used during the
Vdc control function
. The set value must be reduced if the DC
link voltage is set to a value other than the setpoint.
Содержание ADV200 WA
Страница 84: ...84 ADV200 WA Functions description and parameters list 22 3 FUNCTIONS DC BRAKING ...
Страница 274: ...274 ADV200 WA Block Diagrams G Block Diagrams System Diagrams Index Drive overview ...
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