Fuji Electric FRENIC MEGA G2 Series - Page 483

5.3 Description of Function Codes 5.3.9 d codes (Applied functions 2)
5-299
FUNCTION CODES
Chap 5
FUNCTION
CODES
F Codes
E Codes
C Codes
P Codes
H Codes
A Codes
b Codes
r Codes
J Codes
d Codes
U Codes
y Codes
K Codes
d07/A49/ b49/r49
d08/A50/ b50/r50
d29/A58/ b58/r58
Speed control 1 to 4 (Notch filter resonance frequency)
Speed control 1 to 4 (Notch filter attenuation level)
Speed control 1 to 4 (Notch filter width)
Reference function code: d25: ASR switching time
These function codes specify speed control using notch filters. The notch filters make it possible to decrease the
speed loop gain only in the vicinity of the predetermined resonance points, suppressing the mechanical resonance.
The notch filters are available only under “vector control with speed sensor.” Setting the speed loop gain at a high
level in order to obtain quicker speed response may cause mechanical resonance. If it happens, decreasing the
speed loop gain the speed response will be slower in the whole operating range. In such a case, using the notch
filter makes it possible to decrease the speed loop gain only in the vicinity of the predetermined resonance points
and set the speed loop gain at a high level in other operating points, enabling a quicker speed response in the
whole operating range.
4 resonance frequencies can be set, allowing the respective attenuation level and width to be set.
Table 5.3-25
Function
code
Name
Data setting range
Unit
Default
setting
Notch
filter 1
d07
Speed control 1 (Notch filter resonance
frequency)
1 to 500
Hz
200
d08
Speed control 1 (Notch filter attenuation level)
0 to 40
dB
0 (Disable)
d29
Speed control 1 (Notch filter width)
0 (narrow) to 3
(wide)
-
2
Notch
filter 2
A49
Speed control 2 (Notch filter resonance
frequency)
1 to 500
Hz
200
A50
Speed control 2 (Notch filter attenuation level)
0 to 40
dB
0 (Disable)
A58
Speed control 2 (Notch filter width)
0 (narrow) to 3
(wide)
-
2
Notch
filter 3
b49
Speed control 3 (Notch filter resonance
frequency)
1 to 500
Hz
200
b50
Speed control 3 (Notch filter attenuation level)
0 to 40
dB
0 (Disable)
b58
Speed control 3 (Notch filter width)
0 (narrow) to 3
(wide)
-
2
Notch
filter 4
r49
Speed control 4 (Notch filter resonance
frequency)
1 to 500
Hz
200
r50
Speed control 4 (Notch filter attenuation level)
0 to 40
dB
0 (Disable)
r58
Speed control 4 (Notch filter width)
0 (narrow) to 3
(wide)
-
2
Setting the notch filter attenuation level to “0” (dB) disables the corresponding notch filter.
All 4 notch filters can be used for motor 1, and they can also be used for motors 1 to 4.
Table 5.3-26
Setting condition
Notch filter 1
Notch filter 2
Notch filter 3
Notch filter 4
d07, d08, d29
A49, A50, A58
b49, b50, b58
r49, r50, r58
Motor selection (“M2”, “M3”, “M4”) is
not used.
(E01 to E09, E98, E99 ≠ 12, 36, 37)
Set 4 types of notch filter for motor 1.
Set “motor/parameter switching” for
all parameter switching.
(A42, b42, r42 = 1)
Other than above
For motor 1
For motor 2
For motor 3
For motor 4