Danfoss VLT 5000 Operating Instructions Manual page 33

No. Parameter
745 Negative software
limit
NEG. SW. LIMIT
746 Target position
window
TARGET WINDOW
747 Touch probe delay
PROBE DELAY
748 Feedback input
SWAP ENCODER
749 Control source
FIELDBUS MODE
750 User APOS setting
SET APOS
751 Positive SW limit
active
POS SW LIM ACT
752 Negative SW limit
active
NEG SW LIM ACT
32
Positioning Controller
Default Range
value
–1,073,000,000 –1,073,000,000 ...
1,073,000,000 UU
0 0 UU (< P726) ...
1,073,741,824 UU
0 0 ...100,000 ms
0 0 ... 1
0 0 ... 1
0 -1,073,741,824 ...
1,073,741,824
1 0 ... 1
1 0 ... 1
Description
If the actual position (P795) goes below
the value specified in this parameter an
error situation is defined (P798 = 5) and
handled according to the setting of the
"Error behaviour" parameter (P725).
During a positioning sequence the "Refe-
renced position reached" output (MK3C 2)
is set according to this parameter.
If the setting of this parameter is "0" then
the "Referenced position reached" output
goes high immediately when the internal
PID target position is equal to the reques-
ted target position.
If the setting of this parameter is larger
than "0" i.e. "200" then the "Referenced
position reached" output goes high when
the actual position (P795) is within
±200 UU of the requested target position.
This parameter enables for compensation
in any fixed delay there may be in the
touch probe.
Choose feedback input for positioning con-
troller. Enter "0" to use MK3D, enter "1" to
use MK3B. This is used to enable the use
of absolute encoders for feedback together
with VLT 5000 Flux in closed loop mode.
In that case input MK3D has an incremen-
tal encoder fitted (feedback for Flux) and
MK3B has an absolute encoder fitted for
positioning feedback. The text in parame-
ter 713 and 714 changes accordingly
Choose control source for pos. controller.
Enter "0" for digital inputs or "1" for fieldbus
control.
At power-up if homing type is "-2" (see
parameter 731) the actual position is equal
the value set here.
Enter "0" to disable positive software limit
switch. This should be done only when not
positioning within two fixed limits.
Enter "0" to disable negative software limit
switch. This should be done only when not
positioning within two fixed limits.
MG.50.P3.02 - VLT is a registered Danfoss trademark