ABB ACS560 Firmware Manual page 256

256 Parameters
No. Name/Value
30.24 Maximum torque 2
0.0...1600.0%
30.26 Power motoring
limit
0.00...600.00%
30.27 Power generating
limit
-600.00...0.00%
30.30 Overvoltage control
Disable
Enable
30.31 Undervoltage
control
Disable
Enable
30.35 Thermal current
limitation
Disable
Enable
Description
Defines the maximum torque limit for the drive (in percent of
nominal motor torque) when
The limit is effective when
• the source selected by
• 30.18 is set to Torque limit set 2
and
• 30.22 Max torque 2 source
See diagram at 30.18 Torq lim
Maximum torque limit 2.
Defines the maximum allowed power fed by the inverter to the
motor in percent of nominal motor power.
Maximum motoring power.
Defines the maximum allowed power fed by the motor to the
inverter in percent of nominal motor power.
Note: If your application, like a pump or a fan, requires that
the motor must rotate in one direction only, use speed/
frequency limit (30.11 Minimum speed/30.13 Minimum
frequency), or direction limit
Do not set parameter 30.19 Minimum torque 1
Power generating limit to 0%, as the drive is then not able to
stop correctly.
Maximum generating power.
Enables 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: If the drive is equipped with a brake chopper and
resistor, or a regenerative supply unit, the controller must be
disabled.
Overvoltage control disabled.
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.
30.18 Torq lim sel is 1, or
is set to Maximum torque
sel.
(20.21 Direction) to achieve this.
or
Def/FbEq16
300.0%
2.
See par.
46.03
300.00%
1 = 1%
-300.00%
30.27
1 = 1%
Enable
0
1
Enable
0
1
Enable
0
1