Program features
74
Hexagonal motor flux
Typically, the drive controls the motor flux in such a way that the rotating flux vector
follows a circular pattern. This is ideal in most applications. When operated above
the field weakening point (FWP, typically 50 or 60 Hz), it is, however, not possible to
reach 100% of the output voltage. The peak load capacity of the drive is lower than
with the full voltage.
If hexagonal flux control is selected, the motor flux is controlled along a circular
pattern below the field weakening point, and along a hexagonal pattern in the field
weakening range. The applied pattern is changed gradually as the frequency
increases from 100% to 120% of the FWP. Using the hexagonal flux pattern, the
maximum output voltage can be reached; The peak load capacity is higher than with
the circular flux pattern but the continuous load capacity is lower in the frequency
range of FWP to 1.6
·
FWP, due to increased losses.
Settings
Parameter
Programmable protection functions
AI<Min
AI<Min function defines the drive operation if an analogue input signal falls below the
preset minimum limit.
Settings
Parameter
Panel loss
Panel loss function defines the operation of the drive if the control panel selected as
control location for the drive stops communicating.
Settings
Parameter
External fault
External faults can be supervised by defining one digital input as a source for an
External fault indication signal.
Settings
Parameter
Содержание ACS 800 Series
Страница 1: ...ACS800 Firmware Manual Crane Control Program N697 ...
Страница 4: ......
Страница 26: ...Start up and control through the I O interface 26 ...
Страница 36: ...Quick start up guide 36 ...
Страница 52: ...Control panel 52 ...
Страница 105: ...Program features 105 Figure Control diagram for Shaft synchronisation executed in 20 ms ...
Страница 126: ...Program features 126 The figures below show speed limits according to different load conditions ...
Страница 128: ...Program features 128 ...
Страница 150: ...Application macros control location EXT1 EXT2 150 ...
Страница 228: ...Actual signals and parameters 228 ...
Страница 299: ...Adaptive Programming examples for crane control 299 ...
Страница 305: ...Adaptive Programming examples for crane control 305 ...
Страница 312: ...Adaptive Programming examples for crane control 312 The following figures show the previous example enlarged ...
Страница 314: ...Adaptive Programming examples for crane control 314 The following figures show the previous example enlarged ...
Страница 318: ...Analogue Extension Module 318 ...
Страница 332: ...Additional data actual signals and parameters 332 ...
Страница 333: ...DriveWindow 333 DriveWindow DriveWindow connected to the ACS800 RMIO RDCO board and channel CH3 ...
Страница 334: ...DriveWindow 334 ...
Страница 335: ...Control block diagrams 335 Control block diagrams ...
Страница 336: ...Control block diagrams 336 ...
Страница 337: ...Control block diagrams 337 ...
Страница 338: ...Control block diagrams 338 ...
Страница 340: ...www abb com drives www abb com drivespartners Contact us 3AFE68775230 Rev E EN 2012 09 25 ...