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vacon • 41
Selection
number
Start sign 1: Start Forward
(edge)
3
Start sign 2: Start Back-
ward (edge)
FWD
Set frequency
Set frequency
REV
Run enable
Start sgn 1
Start sgn 2
Keypad stop
button
Explanations:
Start sign 1 activates causing the output fre-
1
quency to rise. The motor runs forward.
Start sign 2 activates causing the motor drops to
2
0. Warning 55 appears on the keypad.
Start sign 1 is inactivated which causes the
3
direction to start changing (FWD to REV)
because Start sign 2 is still active.
Start sign 2 inactivates and the frequency fed to
4
the motor drops to 0.
Start sign 2 activates again causing the motor to
5
accelerate (REV) towards the set frequency.
Start sign 2 inactivates and the frequency fed to
6
the motor drops to 0.
3
Selection name
Output
frequency
0 Hz
1
2
3
4
Figure 8. Start/Stop logic = 3.
Shall be used to exclude the possibility of an unin-
tentional start. The Start/Stop contact must be
opened before the motor can be restarted.
5
6
7
8
9
Start sign 1 activates and the motor accelerates
7
(FWD) towards the set frequency
Run enable signal is set to FALSE, which drops
8
the frequency to 0. The run enable signal is con-
figured with parameter P4.7.
Run enable signal is set to TRUE, which, unlike if
value 0 is selected for this parameter, has no
9
effect because rising edge is required to start
even if Start sign 1 is active.
Keypad stop button is pressed and the frequency
10
fed to the motor drops to 0. (This signal only
works if P2.22 Keypad stop button = Yes)
Start sign 1 is opened and closed again which
11
causes the motor to start.
Start sign 1 inactivates and the frequency fed to
12
the motor drops to 0.
Parameter description
Note
t
10
11
12
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