8.6.12 Suppression of speeds
Suppression of up to three speed ranges.
Under certain circumstances, it is possible to prevent disturbing noises that can arise at certain
speeds due to resonances.
Example for suppression of 2 ranges (Idealized principle diagram)
A Modulation
S Setpoint
R Pband
D Speed controller: setting signal
P P-controller: control deviation
Setting depending on device type
in: %, Hz, rpm
Suppression1
→ Factory setting no suppression active = “OFF” →
Suppression1
Range1 min.
→ Setting for “Range1 min.”
Setting range: “Shutdown Freq.” - “Range 1 max.”
→
Range1 min.
Range1 max.
→ Setting for “Range1 max.”
Setting range: “Range 1 max.” - “Max. Frequency”
→
Range1 max.
Suppression2
→ Identical procedures for Suppression2 and Sup-
pression3, as far as desired
→ etc.
Operating Instructions Fcontrol Basic – model series FSDM2.5..50AM Programming
L-BAL-E174-GB 1704 Index 005 Part.-No.
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