Program features 67
User-definable
U/f
curve
The user can define a custom
U/f
curve (output voltage as a function of frequency).
The curve can be used in special applications where linear and quadratic
U/f
ratios
are not adequate (e.g. when motor break-away torque needs to be boosted).
Note:
The U/f curve can be used in scalar control only, i.e, when
setting is
Note:
Each user-defined point must have a higher frequency and higher voltage than
the previous point.
WARNING!
High voltage at low frequencies may result in poor performance
or motor damage due to overheating.
Settings
Parameter group
(page
).
Autophasing
Autophasing is an automatic measurement routine to determine the angular position
of the magnetic flux of a permanent magnet synchronous motor or the magnetic axis
of a synchronous reluctance motor. The motor control requires the absolute position
of the rotor flux in order to control motor torque accurately.
f
(Hz)
Custom U/f ratio
Voltage
(V)
Par.
Содержание ACS850 series
Страница 1: ...ACS850 Firmware Manual ACS850 Standard Control Program ...
Страница 4: ......
Страница 56: ...56 Control locations and operating modes ...
Страница 262: ...262 Parameters ...
Страница 310: ...310 Fault tracing ...
Страница 348: ...348 Control through a fieldbus adapter ...
Страница 358: ...358 Drive to drive link ...
Страница 368: ...368 Control chain and drive logic diagrams ...