Energy Optimization; Switching Frequency - ABB ACS280 Firmware Manual

• The heating function requires that STO is not triggered.
• The heating function requires that the drive is not faulted.
• Pre-heating uses DC hold to produce current.
Settings and diagnostics
21.14 Pre-heating input source
Parameters
delay 21.16 Pre-heating current
and
Events: -


Energy optimization

The Energy optimization function optimizes the motor flux so that total energy
consumption and motor noise level are reduced when the drive operates below
the nominal load. The total efficiency (motor and drive) can be improved by
1...20% depending on load torque and speed.
Note: With a permanent magnet motor, energy optimization is always enabled.
Settings and diagnostics
45.11 Energy optimizer
Parameter
Events: -
Automatic LS mode
Automatic LS mode (Low speed mode) function can improve current harmonics
at low speed, which reduces motor noise.
If automatic LS mode is enabled,
Minimum switching frequency
8.000kHz.
The Maximum output current may be smaller with automatic LS mode enabled
than disabled. Check details through HW manual.
Settings and diagnostics
97.35 Automatic LS mode
Parameter
Events: -

Switching frequency


The drive has two switching frequencies: reference switching frequency and
minimum switching frequency. The drive tries to keep the highest allowed
switching frequency (= reference switching frequency) if thermally possible, and
then adjusts dynamically between the reference and minimum switching
frequencies depending on the drive temperature. When the drive reaches the
(page
141
(page ).
246
(page ).
97.01 Switching frequency reference
are recommended to less than or equal to
97.36 LS mode activation speed
,
Program features 53
141 21.15 Pre-heating time
),
97.02
and