FWD
REV
Set
frequency
Set
frequency
0 Hz
Run enable
Ctrl signal 1
Ctrl signal 2
Keypad
stop button
1 2 3 4 5 6 7 8 9
Output
frequency
t
70 • vacon parameter descriptions
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9
Figure 9.4: Start/Stop logic, selection 1
Selection
number
Selection name Note
1
CS1:Forward(edge)
CS2:Inverted stop
Explanations
1 Control signal (CS) 1 actives causing the
output frequency to rise. The motor runs
forward.
6 CS1 activates and the motor accelerates
(FWD) towards the set frequency
because the Run enable signal has been
set to TRUE.
2 CS2 inactivates causing the frequency to
drop to 0.
7 Keypad stop button is pressed and the
frequency fed to the motor drops to 0.
3 CS1 inactivates causing the output fre-
quency to rise again. The motor runs
forward.
8 CS1 activates causing the output fre-
quency to rise again. The motor runs
forward.
4 Run enable signal is set to FALSE, which
drops the frequency to 0. The run enable
signal is configured with par. 5.7.
9 CS2 inactivates causing the frequency to
drop to 0.
5 Start attempt with CS1 is not successful
because Run enable signal is still
FALSE.