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Parameters 269
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.
Disable
Overvoltage control disabled.
0
Enable
Overvoltage control enabled.
1
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.
Disable
Undervoltage control disabled.
0
Enable
Undervoltage control enabled.
1
Enables/disables temperature-based output current limitation.
The limitation should only be disabled if required by the
application.
Disable
Thermal current limitation disabled.
0
Enable
Thermal current limitation enabled.
1
(Only visible when IGBT supply unit control activated by
)
Displays limit word 1 of the supply unit.
This parameter is read-only.
-
0000h…FFFFh
Supply unit limit word 1.
1 = 1
No.
Name/Value
Description
Def
/
FbEq16
Bit
Name
Description
0
P user ref max
1 = Power reference is being limited by supply control program
parameters
1
P user ref min
2
P user max
1 = Power is being limited by parameter
3
P user min
1 = Power is being limited by parameter
4
P cooling
overtemp
1 = Power reference is being limited because of coolant
overtemperature
5
P power unit
overtemp
1 = Power reference is being limited because of supply unit
overtemperature
6…15
Reserved
Содержание ACS880-x04
Страница 1: ... ABB INDUSTRIAL DRIVES ACS880 primary control program Firmware manual ...
Страница 4: ......
Страница 18: ...18 Using the control panel ...
Страница 24: ...24 Control locations and operating modes ...
Страница 111: ...Application macros 111 Fieldbus control macro This application macro is not supported by the current firmware version ...
Страница 112: ...112 Application macros ...
Страница 496: ...496 Additional parameter data ...
Страница 544: ...544 Fault tracing ...
Страница 602: ...602 Control chain diagrams ...