Vacon 20 CP/X Applications Manual page 41

Parameter description
Selection
Selection name
number
Start sgn 1: Start pulse
2
Start sgn 2: Stop pulse
FWD Output
frequency
Set frequency
0 Hz
Set frequency
REV
Run enable
Start sgn 1
Start sgn 2
Keypad stop
button
1
Explanations:
Start sgn 1 activates causing the output fre-
1
quency to rise. The motor runs forward.
Start sgn 2 inactivates causing the frequency to
2
drop to 0.
Start sgn 1 activates causing the output fre-
3
quency to rise again. The motor runs forward.
Run enable signal is set to FALSE, which drops
4 the frequency to 0. The run enable signal is con-
figured with parameter P4.7.
Start attempt with Start sgn 1 is not successful
5
because Run enable signal is still FALSE.
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The functions take place on the rising edge of the
Star pulse and on the falling edge of the Stop
pulse.
2 3 4 5
Figure 7. Start/Stop logic = 2.
Note
6 7 8
Start sgn 1 activates and the motor accelerates
6 (FWD) towards the set frequency because the
Run enable signal has been set to TRUE.
Keypad stop button is pressed and the frequency
7 fed to the motor drops to 0. (This signal only
works if P2.22 Keypad stop button = Yes)
Start sgn 1 activates causing the output fre-
8
quency to rise again. The motor runs forward.
Start sgn 2 inactivates causing the frequency to
9
drop to 0.
vacon • 38
t
9
3