I/F Start Frequency; I/F Start Current; Stop Function - Vacon 100 Applications Manual

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P3.1.4.12.1 I/
If the function is activated, the drive is set to current control mode and a constant current de-
fined by P3.1.4.11.3 is fed to the motor until the drive output frequency exceeds the level de-
fined with P3.1.4.11.2. When the output frequency has increased above I/f Start Frequency
level, drive operation mode is changed smoothly back to normal U/f –control mode.
P3.1.4.12.2 I/
I/f start function is used when the drive's output frequency is below this frequency limit. When
the output frequency exceeds this limit, the drive operation mode is changed back to normal
U/f control mode.
P3.1.4.12.3 I/
This parameter defines the current to be fed to the motor when the I/f start function is activat-
ed.
P3.2.5 S
TOP FUNCTION
Selection
number
0
1
P3.2.6 I/O A
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 uninten-
tional start when, for example, power is connected, re-connected after a power failure, after a
fault reset, after the drive is stopped by Run Enable (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.
The used stop mode is
3
F START
F START FREQUENCY
F START CURRENT
Selection name
Coasting The motor is allowed to stop on its own inertia. The control by the
drive is discontinued and the drive current drops to zero as soon as
the stop command is given.
Ramp After the Stop command, the speed of the motor is decelerated
according to the set deceleration parameters to zero speed.
/
START STOP LOGIC
Coasting
in all examples.
Table 113.
Description
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