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100 Program features
DC magnetization
DC magnetization can be applied to the motor to
• heat the motor to remove or prevent condensation, or
• to lock the rotor at, or near, zero speed.
Pre-heating
A motor pre-heating function is available to prevent condensation in a stopped motor,
or to remove condensation from the motor before start. Pre-heating involves feeding
a DC current into the motor to heat up the windings.
Pre-heating is deactivated at start, or when one of the other DC magnetization
functions is activated. With the drive stopped, pre-heating is disabled by the safe
torque off function, a drive fault state, or the process PID sleep function. Pre-heating
can only start after one minute has elapsed from stopping the drive.
A digital source to control pre-heating is selected by parameter
. The heating current is set by
.
Pre-magnetization
Pre-magnetization refers to DC magnetization of the motor before start. Depending
on the selected start mode (
), pre-
magnetization can be applied to guarantee the highest possible breakaway torque,
up to 200% of the nominal torque of the motor. By adjusting the pre-magnetization
time (
), it is possible to synchronize the motor start and, for
example, the release of a mechanical brake.
DC hold
The function makes it possible to lock the rotor at (near) zero speed in the middle of
normal operation. DC hold is activated by parameter
. When
both the reference and motor speed drop below a certain level (parameter
), the drive will stop generating sinusoidal current and start to inject DC
into the motor. The current is set by parameter
. When the
, normal drive operation
continues.
Содержание ACS880-01 Series
Страница 1: ...ABB industrial drives Firmware manual ACS880 ESP control program option N5600 ...
Страница 4: ......
Страница 12: ...12 Table of contents ...
Страница 20: ...20 Introduction to the manual ...
Страница 22: ...22 Using the control panel ...
Страница 28: ...28 Control locations and operating modes ...
Страница 145: ...Application macros 145 Fieldbus control macro This application macro is not supported by the current firmware version ...
Страница 146: ...146 Application macros ...
Страница 502: ...502 Parameters ...
Страница 606: ...606 Fault tracing ...
Страница 662: ...662 Control chain diagrams ...
Страница 664: ...Contact us www abb com drives www abb com drivespartners 3AXD50000041193 Rev A EN EFFECTIVE 2017 06 30 ...