Vacon CX, Руководство пользователя

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Multi-purpose Control Application II Multi-purpose Control Application II Multi-purpose Control Application II Multi-purpose Control Application II Multi-purpose Control Application II
Vacon Plc
Phone: +358-(0)201 2121 Fax: +358-(0)201 212 205
Service: +358-40-8371 150 E-mail: vacon@vacon.com
4. 3 4. 3 4. 3 4. 3 4. 3 Acceleration time 2 Acceleration time 2 Acceleration time 2 Acceleration time 2 Acceleration time 2
4. 4 4. 4 4. 4 4. 4 4. 4 Deceleration time 2 Deceleration time 2 Deceleration time 2 Deceleration time 2 Deceleration time 2
These values correspond to the time required for the output frequency to accelerate
from the set minimum frequency (par. 1
. .
. . . 1) to the set maximum frequency
(par. 1
. .
. . . 2). These times give the possibility to set two different acceleration/
deceleration time sets for one application. The active set can be selected with the
programmable signal DIA3 of this application, see parameter 2
..... 2.
Acceleration/deceleration times can be reduced with an external free analogue input
signal, see parameters 2
.....
18 and 2
.....
19.
4. 5 4. 5 4. 5 4. 5 4. 5 Brake chopper Brake chopper Brake chopper Brake chopper Brake chopper
0 = No brake chopper
1 = Brake chopper and brake resistor installed
2 = External brake chopper
When the frequency converter is decelerating the motor, the inertia of the motor and
the load are fed into the external brake resistor. This enables the frequency converter
to decelerate the load with the torque equal to that of acceleration, if the brake resistor
is selected correctly. See separate Brake resistor installation manual.
4. 6 4. 6
4. 6 4. 6 4. 6
Start function Start function
Start function Start function Start function
Ramp:
0 0 0 0 0 The frequency converter starts from 0 Hz and accelerates to the set referen-
ce frequency within the set acceleration time. (Load inertia or starting friction
may cause prolonged acceleration times).
Flying start:
1 1 1 1 1 The frequency converter is able to start into running motor by applying a small
torque to motor and searching for frequency corresponding to the speed the
motor is running at. Searching starts from the maximum frequency towards
the actual frequency until the correct value is detected. Thereafter the output
frequency will be accelerated/decelerated to the set reference value according
to the set acceleration/deceleration parameters.
Use this mode if the motor is coasting when the start command is given.
With the flying start it is possible to ride through short mains voltage
interruptions.
4. 7 4. 7 4. 7 4. 7 4. 7 Stop function Stop function Stop function Stop function Stop function
Coasting:
0 0
0 0
0 The motor coasts to a halt without any control from the frequency converter,
after the Stop command.
Ramp:
1 1 1 1 1 After the Stop command, the speed of the motor is decelerated according to
the set deceleration parameters.
If the regenerated energy is high it may be necessary to use an external
braking resistor for faster deceleration.
4. 8 4. 8 4. 8 4. 8 4. 8 DC braking current DC braking current DC braking current DC braking current DC braking current
Defines the current injected into the motor during the DC braking.