Vacon 20 CP/X, Applications Manual

Page: 44 / 92

vacon • 41 Parameter description
4
P1.12 F
REQUENCY REFERENCE SOURCE
Defines the source of frequency reference. A second reference source is programmable in
P2.15.
0: Analogue input AI1
1: Analogue input AI2
2: PID reference
3: Not used
4: Keypad
5: Fieldbus
6: AI1 + AI2
7: Max Frequency
External frequency reference is available with the usual logics.
When the drive is fed from solar panels, the external reference is used as the upper limit of the
algorithm searching for maximum power. A low external reference can therefore limit the
power below the maximum available.
Note! the drive will not reach the external reference, if the power from panels is not sufficient.
P1.13 S
TART FUNCTION
0: Ramping
1: Flying start
P1.14 S
TOP FUNCTION
NOTE : fall of Enable signal, when configured, always determines stop by coasting.
P1.15 T
ORQUE BOOST
0: Not used
1: Automatic voltage boost (improves motor torque).
Selection
number
Selection name Description
0 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.
1
Ramp to min
frequency
After the Stop command, the speed of the motor is deceler-
ated to minimum frequency according to the set decelera-
tion parameters.
2
Ramp to zero
frequency
After the Stop command, the speed of the motor is deceler-
ated to zero frequency according to the set deceleration
parameters.