ABB ACS880 Firmware Manual page 365

No. Name / Range /
Selection
Enable
30.31 Undervoltage
control
Disable
Enable
30.35 Thermal current
limitation
Disable
Enable
Description
Overvoltage control enabled.
Enables the undervoltage control of the intermediate
DC link.
If the DC voltage drops due to input power cut off, the
undervoltage controller will automatically decrease the
motor torque in order to keep the voltage above the
lower limit. By decreasing the motor torque, the inertia
of the load will cause regeneration back to the drive,
keeping the DC link charged and preventing an
undervoltage trip until the motor coasts to a stop. This
will act as a power-loss ride-through functionality in
systems with high inertia, such as a centrifuge or a fan.
Undervoltage control disabled.
Undervoltage control enabled.
Enables/disables temperature-based output current
limitation.
The limitation should only be disabled if required by
the application.
Thermal current limitation disabled.
Thermal current limitation enabled.
Parameters 365
Def / Type
FbEq 16b / 32b
1
Enable / uint16
0
1
Enable / uint16
0
1