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Parameter description
Selection
Selection name
number
Start sign 1: Start Forward
0
Start sign 2: Start Backward
Output
FWD
frequency
Set frequency
0 Hz
Set frequency
REV
Run enable
Start sgn 1
Start sgn 2
Keypad Start
button
Keypad Stop
button
1
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.
Start sign 1 activates and the motor accelerates
7
(FWD) towards the set frequency
Service support: find your nearest Vacon service center at www.vacon.com
The functions take place when the contacts are
closed.
2
3
4
5
6
7
Figure 5. Start/Stop logic = 0.
Note
8
9
10
11
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 causes
9
the frequency to rise towards the set frequency
because Start sign 1 is still 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 = 1)
Pushing the Start button on the keypad has no
11
effect on the drive status.
The keypad stop button is pushed again to stop
12
the drive.
The attempt to start the drive through pushing
13
the Start button is not successful even if Start
sign 1 is inactive.
vacon • 38
t
12
13
3
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