Configuration
8200SHB0199
7-33
7.5.9.5 Skip frequencies
Only “HVAC” controllers
Code Name
Possible settings
IMPORTANT
Lenze Choice Info
C625* Skip frequency 1 480.00 0.00 {0.02 Hz} 480.00
C626* Skip frequency 2 480.00 0.00 {0.02 Hz} 480.00
C627* Skip frequency 3 480.00 0.00 {0.02 Hz} 480.00
C628 Bandwidth of skip
frequencies
0.00 0.00 {0.01 %} 100.00
Function With certain output frequencies, mechanical resonances might occur in the drive (e.g. fan). The skip
frequencies eliminate these unwanted output frequencies. The bandwidth (af) determines the
range of skip frequencies.
With skip frequency= 480.00 Hz, the function is not active.
The function is within the frequency setpoint range of the ramp function generator.
Adjustment
-
Set the required skip frequencies under C625, C626, C627.
-
C628 defines the bandwidth of skip frequencies.
- Calculate the bandwidth (Df) for the corresponding skip frequency:
of[Hz] Skip frequency [Hz]ô
C628 [%]
100 %
Important
-
The skip frequencies are only effective in the main setpoint channel (see signal flow chart).
-
C625, C626, C627, C628 are only stored in parameter set 1.
f
skip1
f
skip3
f
skip2
C625
C626
C627
C628 C628C628
fd
set1
fd
set2
f f f
FIG 7-3 Skip frequencies and their bandwidth (af)
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