Program features 65
on). Furthermore, if the Run enable signal has been off, a new rising edge is
required before continuous magnetization starts.
• Continuous magnetization should not be enabled while the motor is rotating.
WARNING:
The motor must be designed to absorb or dissipate the thermal
energy generated by continuous magnetization, for example by forced
ventilation.
Settings
Parameters
(page
,
,
and
(page
).
Hexagonal motor flux pattern
Note:
This feature is only available in scalar motor control mode (see page
).
Typically, the drive controls the motor flux so that the rotating flux vector follows a
circular pattern. This is ideal for most applications. However, when operating above
the field weakening point (FWP), it is not possible to reach 100% of the output
voltage. This reduces the peak load capacity of the drive.
Using a hexagonal motor flux vector pattern, the maximum output voltage can be
reached above the field weakening point. This increases the peak load capacity
compared to the circular pattern, but the continuous load capacity in the range of
FWP … 1.6 × FWP is reduced because of increasing losses. With hexagonal motor
flux active, the pattern changes from circular to hexagonal gradually as the frequency
rises from 100% to 120% of the FWP.
Settings
Parameters
(page
Summary of Contents for ACS880-x04
Page 1: ... ABB INDUSTRIAL DRIVES ACS880 primary control program Firmware manual ...
Page 4: ......
Page 18: ...18 Using the control panel ...
Page 24: ...24 Control locations and operating modes ...
Page 112: ...112 Application macros ...
Page 496: ...496 Additional parameter data ...
Page 544: ...544 Fault tracing ...
Page 602: ...602 Control chain diagrams ...