Vacon 20 - Page 114

1 2 3 4 5 6 7 8
9 10 11
t
Outp ut
frequerty
0Hz
Set
frequerty
Set
frequerty
REV
FWD
Run enable
Ctrl signal 1
Ctrl signal 2
Keypad
stop button
108
•
vacon parameter descriptions
9
Figure 9.5: Start/Stop logic, selection 2
Selection
number
Selection name Note
2
CS1:Forward(edge)
CS2:Backward(edge)
Shall be used to exclude the possibility of an
unintentional start. The Start / Stop contact must
be opened before the motor can be restarted.
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 If start forward signal [CS1] and start
reverse signal [CS2] are active simultane-
ously, there is alarm 55 in LCD panel when
P13.23 FWD/REV conflict supervision=1.
8 CS1 activates and the motor accelerates
(FWD) towards the set frequency
because the Run enable signal has been
set to TRUE.
3 CS1 is inactivated the motor is still
stopped though CS2 is still active, and
alarm 55 should be disappeared in a
while time.
9 Keypad stop button is pressed and the
frequency fed to the motor drops to
0.(This signal only works if Par.2.7 [Key-
pad stop button] = 1)
4 CS2 activates again causing the motor to
accelerate (REV) towards the set frequency.
10 CS1 is opened and closed again which
causes the motor to start.
5 CS2 inactivates and the frequency fed to
the motor drops to 0.
11 CS1 inactivates and the frequency fed to
the motor drops to 0.
6 CS1 activates and the motor accelerates
(FWD) towards the set frequency.