Handbook Ucontrol type-lines PXDM Date 06/04
TBL02_55-GB06/04 Part.-No. 00153239-GB
Page 75 / 105
9.5 Limit
An adjustable limitation of the modulation can be activated via a digital input („D1“, „D2“, ..)
(depending on the programming, as long as no allocation is carried out: Display: - - - - -.
F IO Setup).
Limit value= max. possible modulation (e.g. speed reduction during night operation by time switch).
Setting range Limit „Max. Speed“ up to „Min. Speed“
Factory setting 100 % = max. modulation, i. e. no limit.
↓ ↑ 3
↓P ↑ ESC
Min. speed
Idealized principle diagram
Max. speed
100 %
50 %
modulation
0 50 % 100 % Speed controller: setting signal
Setpoint ← Pband →
P-controller: control deviation
limi
limit 70 %, Min 0 %, Max 100 %
limit 70 %, Min 35 %, Max 85 %
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