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64 Program features
Notes:
• DC hold is only available in speed control in DTC motor control mode (see page
• The function applies the DC current to one phase only, depending on the position
of the rotor. The return current will be shared between the other phases.
Post-magnetization
This feature keeps the motor magnetized for a certain period (parameter
) after stopping. This is to prevent the machinery from moving
under load, for example before a mechanical brake can be applied. Post-
magnetization is activated by parameter
. The magnetization
current is set by parameter
.
Note:
Post-magnetization is only available when ramping is the selected stop mode
(see parameter
Continuous magnetization
A digital signal, such as a user bit in the fieldbus control word, can be selected to
activate continuous magnetization. This can be especially useful in processes
requiring motors to be stopped (for example, to stand by until new material is
processed), then quickly started without magnetizing them first.
Notes:
• Continuous magnetization is only available in speed control in DTC motor control
). If parameter
Continuous magnetization command
is
on, the motor will be kept magnetized after a ramp stop. To enable continuous
magnetization after a coast stop, the command (
) must be cycled (on, off,
Reference
Motor speed
DC hold
t
t
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 ...