12. The attempt to start the drive with the
START button is not successful, because
CS1 is inactive.
Selection
number
Selection name Description
4
CS1 = Start (edge)
CS2 = Reverse
Use this function to prevent an accidental start. Before you
can start the motor again, you must open the start/stop
contact.
t
FWD
Output
frequency
Set
frequency
Set
frequency
0 Hz
REV
Run enable
Ctrl signal 1
Ctrl signal 2
1 2 3 4 6 7 8 9 10 11
5
Fig. 32: I/O A Start/stop logic = 4
1. Control signal (CS) 1 activates and
causes the output frequency to increase.
The motor operates forward because
CS2 is inactive.
2. CS2 activates, which causes the
direction to start to change (FWD to
REV).
3. CS2 becomes inactive, which causes the
direction to start to change (REV to
FWD), because CS1 is still active.
4. CS1 becomes inactive and the frequency
goes to 0.
5. CS2 activates, but the motor does not
start because CS1 is inactive.
6. CS1 activates and causes the output
frequency to increase again. The motor
operates forward, because CS2 is
inactive.
7. The Run enable signal is set to FALSE,
which causes the frequency to go to 0.
Configure the Run enable signal with
parameter P3.5.1.15.
8. Before the drive can start, you must
open and close CS1 again.
9. The STOP button on the keypad is
pushed and the frequency that is fed to
the motor goes to 0. (This signal only
works if the value of P3.2.3 Keypad Stop
Button is Yes.)
10. Before the drive can start, you must
open and close CS1 again.
VACON · 240 PARAMETER DESCRIPTIONS
9
TEL. +358 (0)201 2121 · FAX +358 (0)201 212 205
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