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.
[1]
DC hold
Energizes motor with a DC holding current (see par. 2-00).
[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.
[4]
DC Voltage U0
1-81 Min Speed for Function at Stop [RPM]
Range:
Function:
3 RPM
*
[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:
0.0 Hz
*
[0.0 - 500 Hz]
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]
Counter stop with reset Runs the frequency converter from receipt of a 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, 3-52, 3-62 or 3-72). 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]
Counter stop without
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.
[3]
Speed compensated
stop
Stops at precisely the same point, regardless of the present speed, the stop signal is delayed internally when
the present speed is lower than the maximum speed (set in par. 4-19).
[4]
Speed compensated
counter stop with reset
Same as [3] but after each precise stop the number of pulses counted during ramp down 0 rpm is reset.
[5]
Speed compensated
counter stop without
reset
Same as [3] but the number of pulses counted during ramp down to 0 rpm is deducted from the counter value
in par. 1-84.
This parameter cannot be adjusted while the motor is running.
1-84 Precise Stop
Range:
Function:
100000
*
[0 - 999999999]
Enter the counter value to be used in the integrated precise stop function, par. 1-83.
The maximum permissible frequency at terminal 29 or 33 is 110 kHz.
1-85 Precise Stop Speed Compensation Delay
Range:
Function:
10 ms
*
[1-100 ms]
Enter the delay time for sensors, PLCs, etc. for use in par. 1-83
Precise Stop Function
. In speed compensated
stop mode, the delay time at different frequencies has a major influence on the stop function.
2. How to Programme
FC 300 Programming Guide
50
MG.33.M3.02 - VLT
®
is a registered Danfoss trademark
2