Vacon 20 - Page 111

parameter descriptions vacon
•
105
9
After the Stop command, the speed of the motor is decelerated ac-
cording to the set deceleration parameters.
If the regenerated energy is high it may be necessary to use an exter-
nal braking resistor for to be able to decelerate the motor in accepta-
ble time.
2.4 I / O
START STOP LOGIC
Values 0...4 offer possibilities to control the starting and stopping of the AC
drive with digital signal connected to digital inputs. CS = Control signal.
The selections including the text 'edge' shall be used to exclude the possibility
of an unintentional start when, for example, power is connected, re-connected
after a power failure, after a fault reset, after the drive is stopped by Run En-
able (Run Enable = False) or when the control place is changed to I / O control.
The Start / Stop contact must be opened before the motor can be started.
I/O stop logic uses accurate stop mode.Accurate stop mode is that the stop
time is fixed from falling edge of DI to power stopping the drive.
Selection
number
Selection name Note
0
CS1:Forward
CS2:Backward
The functions take place when the contacts are closed.
Figure 9.3: Start/Stop logic, selection 0
1 2 3 4 5 6 7 8 9
10 11 12 13
t
Outp ut
frequerty
0Hz
Set
frequerty
Set
frequerty
REV
FWD
Run enable
Ctrl signal 1
Ctrl signal 2
Keypad
start button
Keypad
stop button