description of parameters vacon • 57
24-hour support +358 (0)40 837 1150 • Email: vacon@vacon.com
7
505 Start function
(2.4.6)
Ramp:
0 The frequency converter starts from 0 Hz and accelerates to the set reference
frequency within the set acceleration time. (Load inertia or starting friction
may cause prolonged acceleration times).
Flying start:
1 The frequency converter is able to start into a running motor by applying a
small torque to motor and searching for the 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 increased/decreased 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.
506 Stop function
(2.4.7)
Coasting:
0 The motor coasts to a halt without any control from the frequency converter,
after the Stop command.
Ramp:
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.
Normal stop: Ramp/ Run Enable stop: coasting
2 After the Stop command, the speed of the motor is decelerated according to
the set deceleration parameters. However, when Run Enable is selected, the
motor coasts to a halt without any control from the frequency converter.
Normal stop: Coasting/ Run Enable stop: ramping
3 The motor coasts to a halt without any control from the frequency converter.
However, when Run Enable signal is selected, 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.
507 DC-braking current
(2.4.8)
Defines the current injected into the motor during DC-braking.
To Next Page
Loading...
Need help?
General
