Notch filter control of Speed loop
Bit0~1:
The BCD code composed
of two bits determines the filter to
be turned on。
Bit4:1 :Indicates FFT analysis using
actual current
,0 :Indicates that the
target current is used for analysis
Bit5:1: Indicates use actual speed
for FFT analysis,0: Indicates do
not use actual speed for FFT
analysis
Bit.7:1 Indicates that the FFT
function is turned on, it will
automatically become 0 after the
analysis is completed, and it can
only be turned on in the enabled
state.
(1)
Single-point notch filter
When the notch filter control (60F9.04) is set to 0, it indicates to close the notch filter control; whenset
to1, it indicates to open a single notch filter, and the frequency of the filter is set by the notch filter
(60F9.03)
(2)
FFT
Multi-point Notch Filter
Adopt high-order multi-point notch filter technology, automatically measure the mechanical
resonance frequency of the load, and write the tuning result into the filter 0 and filter 1。The FD5
drive can be set with 4 notch filters, and the FFT will be adjusted according to the setting value
of the notch filter control. Filter 2 and Filter 3 are manually adjusted notch filters, and the
corresponding filters can be turned on/off through the notch filter control.
。
When the notch filter control (60F9.04) is set to 144DEC, it indicates that the actual current is
used for FFT analysis.
When the notch filter control (60F9.04) is set to 160DEC, it indecates that the actual speed is used
for FFT analysis.
When the FFT is successfully tuned, the notch filter control bit7 to reset, and the BCD code
combined with bit0 and bit1 determines the filter to be turned on.
7.3.2 Tuning of the position loop