User manual

parameter descriptions vacon • 105
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9
9.2 Start / stop setup (Control panel: Menu PAR -> P2)
2.1 REMOTE CONTROL PLACE SELECTION
With this parameter, the user can select the active control place, frequency
converter can be selected with P3.3/P3.12. The selections are:
0 = I / O terminal
1 = Fieldbus
2 = Keypad
Note: You can select control place by pressing Loc / Rem button or with par.
2.5(Local / Remote), P2.1 will have no effect in local mode.
Local = Keyp ad is the control place
Remote = Control place determined by P2.1
2.2 START FUNCTION
The user can select two start functions for Vacon 20 with this parameter:
0 = Ramp start
The frequency converter starts from 0 Hz and accelerates to the set
frequency reference within the set acceleration time (See detailed de-
scription: ID103). (Load inertia, torque or starting friction may cause
prolonged acceleration times).
1 = Flying start
The frequency converter is able to start into a running motor by apply-
ing small current pulses to motor and searching for the frequency cor-
responding to the speed the motor is running at. Searching starts from
the maximum frequency towards the actual frequency until the cor-
rect value is detected. Thereafter, the output frequency will be in-
creased/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 giv-
en. With the flying start it is possible to start the motor from actual
speed without forcing the speed to zero before ramping to reference.
2.3 STOP FUNCTION
Two stop functions can be selected in this application:
0 = Coasting
The motor coasts to a halt without control from the frequency convert-
er after the Stop command.
1 = Ramping