Danfoss VLT5000 SyncPos Operating Instructions Manual page 177

7 HOME_VEL
HOME_VEL determines the Home velocit
which the movement to the reference switch is
made. The velocity statement refers to the rated
speed and depends on the VELRES (22) parame-
ters. Generally this statement is made in % of the
rated speed.
Content
Velocity for movement to home position
Parameter Group
Axis parameter Home AXH
CAM-Editor: index card Home
Unit
% (VELRES = 100)
Value range
–VELRES ... VELRES
A negative sign means the search will
be made in the other direction.
NB!
Since the program always searches for the
reference switch in the same direction of
rotation (depending on sign) this should be set at the
limits of the motion area. Only in this manner is it
possible to guarantee that the drive actually moves
towards the reference switch when moving home
and not away from it. In order to maintain a good
repeatability of the reference motion no more than
10% of the maximum speed should be used.
176
Home velocity y y y y , with Home velocit Home velocit Home velocit
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Programmable SyncPos motion controller
8 TESTWIN
TESTWIN indicates the size of the target window. AA
position is only viewed as reached when the refe-
rence-run (trapez) is executed, the actual position is
within the window and the velocity is less than
TESTVAL (Precondition I: TESTWIN and TESTTIM
are activated.)
In this content the velocity is given as TESTVAL in
qc / TESTTIM.
The controller wait to execute the next command
until the actual position is within the target window.
If TESTWIN is not active (parameter 0), then the
target has been reached if the set position is the
target position. However, this does not necessarily
correspond with the actual position of the drive.
Content
Size of the target window
Parameter Group
Axis parameter Inputs/Outputs AXI
CAM-Editor: index card Inp/Outp
Unit
qc
Value range
0 ... MLONG
0 = inactive
TESTWIN must always be less than TESTVAL.
NB!
If the target window surrounding the end
position is selected to be too small, the drive
could move in a very small area around the
end position without reaching the target window.
Thus the program would be 'stuck' after the cor-
responding positioning command.
A target window of 0 deactivates the monitoring of
the actual position and only monitors the command
position.
MG. 1 0.J8.02 – VLT is a registered Danfoss trade mark
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