Danfoss FC 300 Design Manual page 142

FC 300 Design Guide
Select Coasting [0] to leave the motor in free
mode.
Select DC hold [1] to energize the motor with a
DC holding current (see par. 2-00).
Select Motor check [2] to check if a motor is been
connected.
Select Pre-magnetizing [3] to build up a magnetic
field while the motor is stopped. The motor can
now produce a quick torque build-up at start.
Min Speed for Function at Stop
1-81
[RPM]
Value:
0 - 600 RPM
Function:
Set the speed at which to activate par. 1-80 Func-
tion at stop.
Min Speed for Function at Stop
1-82
[Hz]
Value:
0.0 - 500 Hz
Function:
Set the output frequency at which to activate par.
1-80 Function at stop.
1-83 Precise Stop Function
Value:
Precise ramp stop
Counter stop with reset
Counter stop without reset
Speed compensated stop
Speed compensated counter stop with re-
set
Speed compensated counter stop without
reset
Function:
Select Precise ramp stop [0] to achieve high re-
petitive precision at the stopping point.
Select Counter stop (with or without reset) to run
the frequency converter from receipt of a pulse
start signal until the number of pulses program-
med by the user in par. 1-84 Precise Stop Counter
Value has been received at input terminal 29 or
input terminal 33.
factory setting
142
How to Programme
1RPM
0.0Hz
[0]
[1]
[2]
[3]
[4]
[5]
() display text [] value for use in communication via serial communication port
MG.33.B7.02 - VLT is a registered Danfoss trademark
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).
Speed compensated stop [3]: To stop 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. 4-13).
Counter stop and Speed-compensated stop can be
combined with or without reset.
Counter stop with reset [1]. After each precise
stop the number of pulses counted during ramp
down 0 rpm is reset.
Counter stop without reset [2]. The number of
pulses counted during ramp down to 0 rpm is de-
ducted from the counter value in par. 1-84.
This parameter cannot be adjusted while the mo-
tor is running.
1-84 Precise Stop CounterValue
Value:
0 - 999999999
Function:
Enter the counter value to be used in the integra-
ted precise stop function, par. 1-83.
The maximum permissible frequency at terminal
29 or 33 is 110 kHz.
Precise Stop Speed Compensation
1-85
Delay
Value:
1-100 ms
Function:
Enter the delay time for sensors, PLCs, etc. for use
in par. 1-83 Precise Stop Function. In speed com-
pensated stop mode, the delay time at different
frequencies has a major influence on the stop
function.
100000
10 ms