72
•
vacon
parameter descriptions
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9
FWD
REV
Set
frequency
Set
frequency
0 Hz
Run enable
Ctrl signal 1
Ctrl signal 2
Keypad
start button
Keypad
stop button
1
2
3
4
5
6
7
8
9
10
11
12
Output
frequency
t
Figure 9.6: Start/Stop logic, selection 3
Selection
number
Selection name
Note
3
CS1:Start
CS2:Reverse
Explanations:
1
Control signal (CS) 1 actives causing the
output frequency to rise. The motor runs
forward.
7
Run enable signal is set to FALSE, which
drops the frequency to 0.The run enable
signal is configured with par. 5.7.
2
CS2 activates which causes the direction
to start changing (FWD to REV).
8
Run enable signal is set to TRUE, which
causes the frequency to rise towards the
set frequency because CS1 is still active.
3
CS2 is inactivated which causes the
direction to start changing (REV to FWD)
because CS1 is still active.
9
Keypad stop button is pressed and the
frequency fed to the motor drops to 0.
4
Also CS1 inactivates and the frequency
drops to 0.
10
The drive starts through pushing the
Start button on the keypad.
5
Despite the activates of CS2,the motor
does not start because CS1 is inactive.
11
The drive is stopped again with the Stop
button on the Keypad.
6
CS1 activates causing the output fre-
quency to rise again. The motor runs
forward because CS2 is inactive.
12
The attempt to start the drive through
pushing the Start button is not success-
ful because CS1 is inactive.
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