Danfoss FC 300 Programming Manual page 43

Parameter Descriptions
1-75 Start Speed [Hz]
Range: Function:
Application [Applica- This par can be used for hoist applica-
dependent tion tions (cone rotor). Set a motor start
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dependant] speed. After the start signal, the output
speed leaps to set value. Set the start
function in par. 1-72 Start Function to
[3], [4] or [5], and set a start delay time
in par. 1-71 Start Delay.
1-76 Start Current
Range: Function:
0.00 [Applica- Some motors, e.g. cone rotor motors, need
A tion extra current/starting speed to disengage
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dependant] 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 applica-
tions (cone rotor).
3.3.8 1-8* Stop Adjustments
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
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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-magnetiz- Builds up a magnetic field while the motor is
ing 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:
Application [0 - 600 RPM] Set the speed at which to
dependent
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FC 300 Programming Guide
Function:
activate par. 1-80 Function at
Stop.
®
MG.33.M9.02 - VLT is a registered Danfoss trademark
1-82 Min Speed for Function at Stop [Hz]
Range:
Application [Application
dependent dependant]
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1-83 Precise Stop Function
Option: Function:
[0] Precise Achieves high repetitive precision at the
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ramp stop stopping point.
[1] Cnt stop Runs the frequency converter from receipt of a
with reset pulse start signal until the number of pulses
programmed 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 Same as [1] but the number of pulses counted
w/o reset during ramp down to 0 rpm is deducted from
the counter value in par. 1-84 Precise Stop
Counter Value.
[3] Speed Stops at precisely the same point, regardless of
comp stop the present speed, the stop signal is delayed
internally when the present speed is lower than
the maximum speed (set in par. 4-19 Max Output
Frequency).
[4] Com cnt Same as [3] but after each precise stop the
stop w/rst number of pulses counted during ramp down 0
rpm is reset.
[5] Comp cnt Same as [3] but the number of pulses counted
stop w/o r during ramp down to 0 rpm is deducted from
the counter value in par. 1-84 Precise Stop
Counter Value.
This parameter cannot be adjusted while the motor is running.
1-84 Precise Stop Counter Value
Range: Function:
100000 [0 - 999999999 ] Enter the counter value to be used in
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the integrated precise stop function,
par. 1-83 Precise Stop Function.
The maximum permissible frequency
at terminal 29 or 33 is 110 kHz.
Function:
Set the output frequency at
which to activate
par. 1-80 Function at Stop.
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