VLT
®
FCD Series
The counter function is activated (starts timing) at
the flank of the start signal (when it changes from
stop to start)
Speed compensated stop. To stop at precisely the
same point, regardless of the present speed, a stop
signal received is delayed internally when the pre-
sent speed is lower than the maximum speed (set in
parameter 202).
Reset. 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
Hz is reset.
Counter stop without reset [2]. The number of
pulses counted during ramp down to 0 Hz is de-
ducted from the counter value in parameter 344.
344
344 Counter value
(PULSE COUNT PRE.)
Value:
1 - 999999
✭ 100000 pulses
Function:
In this parameter you can select the counter value to
be used in the integrated precise stop function (pa-
rameter 343).
Description of choice:
The factory setting is 100000 pulses. The highest
frequency (max. resolution) that can be registered at
terminal 33 is 67.6 kHz.
349
349 Speed comp delay
(SPEED COMP DELAY)
Value:
0 ms - 100 ms
✭ 10 ms
Function:
In this parameter the user can set the system’s de-
lay time (Sensor, PLC, etc.). If you are running
speed-compensated stop, the delay time at different
frequencies has a major influence on the way in
which you stop.
Description of choice:
The factory setting is 10 ms. This means that it is
assumed that the total delay from the Sensor, PLC
and other hardware corresponds to this setting.
NB!:
Only active for speed-compensated stop.
✭ = factory setting. () = display text [] = value for use in communication via serial communication port
MG.04.A1.02 - VLT is a registered Danfoss trade mark
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