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vacon • 39
Selection
number
Start sign 1: Start Forward
1
Start sign 2: Reverse
FWD
Set frequency
Set frequency
REV
Run enable
Start sgn 1
Start sgn 2
Keypad start
button
Keypad stop
button
Explanations:
Start sign 1 activates causing the output fre-
1
quency to rise. The motor runs forward.
Start sign 2 activates which causes the direction
2
to start changing (FWD to REV).
Start sign 2 is inactivated which causes the
3
direction to start changing (REV to FWD)
because Start sign 1 is still active.
Also Start sign 1 inactivates and the frequency
4
drops to 0.
Despite the activation of Start sign 2, the motor
5
does not start because Start sign 1 is inactive.
Start sign 1 activates causing the output fre-
6
quency to rise again. The motor runs forward
because Start sign 2 is inactive.
3
Selection name
Output
frequency
0 Hz
1
2
3
Figure 6. Start/Stop logic = 1.
The functions take place when the contacts are
closed.
4
6
7
8
5
Run enable signal is set to FALSE, which drops
7
the frequency to 0. The run enable signal is con-
figured with parameter P4.7.
Run enable signal is set to TRUE, which causes
8
the frequency to rise towards the set frequency
because Start sign 1 is still active.
Keypad stop button is pressed and the frequency
9
fed to the motor drops to 0. (This signal only
works if P2.22 Keypad stop button = Yes)
Pushing the Start button on the keypad has no
10
effect on the drive status.
The drive is stopped again with the stop button
11
on the keypad.
The attempt to start the drive through pushing
12
the Start button is not successful even if Start
sign 1 is inactive.
Parameter description
Note
t
9
10
11
12
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