ABB ACS880 - Page 326

Def / Type
FbEq 16b / 32b
DescriptionName / Range /
Selection
No.
3
Digital input DI2 (10.2 DI delayed status, bit 1).
DI2
4
Digital input DI3 (10.2 DI delayed status, bit 2).
DI3
5
Digital input DI4 (10.2 DI delayed status, bit 3).
DI4
6
Digital input DI5 (10.2 DI delayed status, bit 4).
DI5
7
Digital input DI6 (10.2 DI delayed status, bit 5).
DI6
10
Digital input/output DIO1 (11.2 DIO delayed status, bit 0).
DIO1
11
Digital input/output DIO2 (11.2 DIO delayed status, bit 1).
DIO2
See Terms and abbreviations (page 132).
Other
300.00 % / real32Defines the maximum shaft power in motoring mode, ie.
when power is being transferred from the motor to the
machinery.
The value is given in percent of nominal motor power.
Power motoring limit30.26
1 = 1 % / 100 = 1 %Maximum shaft power in motoring mode.0.00 ... 600.00 %
-300.00 % / real32Defines the maximum shaft power in generating mode, ie.
when power is being transferred from the machinery to the
motor. The value is given in percent of nominal motor
power.
Note: Do not set this parameter to 0% in an attempt to
prevent reverse rotation. In an open-loop application, that
is likely to prevent the motor from stopping altogether. To
prevent reverse rotation, use the speed/frequency limits
in this parameter group, or parameters 20.23/20.24.
Power generating limit30.27
1 = 1 % / 100 = 1 %Maximum shaft power in generating mode.-600.00 ... 0.00 %
Enable / uint16Enables the overvoltage control of the intermediate DC
link.
Fast braking of a high inertia load causes the voltage to
rise to the overvoltage control limit. To prevent the DC
voltage from exceeding the limit, the overvoltage controller
automatically decreases the braking torque.
Note: With internal brake chopper, drive increases its
internal overvoltage control limit to enable higher reliability
in breaking.
Overvoltage control30.30
0Overvoltage control disabled.Disable
1Overvoltage control enabled.Enable
Enable / uint16Enables 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 control30.31
0Undervoltage control disabled.Disable
326 Parameters