Danfoss VLT AutomationDrive FC 300 Programming Guide

1-76 Start Current
Range: Function:
0.00 A* [Application dependant] Some motors, e.g. cone rotor motors, need extra current/starting speed to disengage the rotor. To
obtain this boost, set the required current in par. 1-76
Start Current . Set par. 1-74 Start Speed
[RPM]
. Set par. 1-72 Start Function to [3] or [4], and set a start delay time in par. 1-71 Start
Delay
.
This parameter can be used for hoist applications (cone rotor).
3.3.8 1-8* Stop Adjustments
Parameters for setting special stop features for the motor.
1-80 Function at Stop
Option: Function:
Select the frequency converter function after a stop command or after the speed is ramped down
to the settings in par. 1-81
Min Speed for Function at Stop [RPM] .
[0] * Coast Leaves motor in free mode. The motor is disconnected from the frequency converter.
[1] DC hold Energizes motor with a DC holding current (see par. 2-00
DC Hold Current ).
[2] Motor check Checks if a motor has been connected.
[3] Pre-magnetizing Builds up a magnetic field while the motor is stopped. The motor can now produce a quick torque
build-up at start. Asynchronous motors only.
[4] DC Voltage U0
[5] Coast at low reference
1-81 Min Speed for Function at Stop [RPM]
Range: Function:
Application
dependent*
[0 - 600 RPM] Set the speed at which to activate par. 1-80 Function at Stop .
1-82 Min Speed for Function at Stop [Hz]
Range: Function:
Application
dependent*
[Application dependant] Set the output frequency at which to activate par. 1-80 Function at Stop .
1-83 Precise Stop Function
Option: Function:
[0] * Precise ramp stop Achieves high repetitive precision at the stopping point.
[1] Cnt stop with reset Runs the frequency converter from receipt of a pulse start signal until the number of pulses pro-
grammed by the user in par. 1-84
Precise Stop Counter Value has been received at input terminal
29 or input terminal 33.
An internal stop signal will activate the normal ramp down time (par. 3-42
Ramp 1 Ramp Down
Time
, par. 3-52 Ramp 2 Ramp down Time , par. 3-62 Ramp 3 Ramp down Time or par. 3-72 Ramp
4 Ramp Down Time
). The counter function is activated (starts timing) at the edge of the start signal
(when it changes from stop to start). After each precise stop the number of pulses counted during
ramp down 0 rpm is reset.
[2] Cnt stop w/o reset Same as [1] but the number of pulses counted during ramp down to 0 rpm is deducted from the
counter value in par. 1-84
Precise Stop Counter Value .
[3] Speed comp stop Stops at precisely the same point, regardless of the present speed, the stop signal is delayed in-
ternally when the present speed is lower than the maximum speed (set in par. 4-19
Max Output
Frequency
).
3 Parameter descriptions FC 300 Programming Guide
58 MG.33.M8.02 - VLT
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is a registered Danfoss trademark
3

Danfoss VLT AutomationDrive FC 300 Specifications

General

Brand	Danfoss
Model	VLT AutomationDrive FC 300
Category	DC Drives
Language	English