Danfoss VLT 5000 Series Manual page 138

22 VELRES
The V V V V V elocity resolution elocity resolution VELRES defines a relative elocity resolution elocity resolution
elocity resolution
size for the velocity values of the motion com-
mands and parameters.
The information concerning speed and accelera-
tion can then be made in whole numbers in rela-
tion to this scaling. The value 100 means that the
information in the commands are related to 100,
thus in percent.
Content
Velocity resolution
Parameter Group
AXV
Value range
1 ... MLONG
2 3 POSFACT_Z
All path information in motion commands are
made in user units and are converted to quad-
counts internally. By choosing these scaling units
correspondingly it is possible to work with any
technical measurement unit (for example mm).
This factor is a fraction which consists of a nume-
rator and denominator.
1 User unit = POSFACT_Z / POSFACT_N
Scaling determines how many quad-counts make
up a user unit. For example, if it is 50375/1000,
then one UU corresponds to exactly 50.375 qc.
Content
Numerator user factor
Parameter Group
AXE
Value range
1 ... MLONG
The upper limit depends on the maximal
number of motion commands used within
a program. The following context is valid:
max. position (UU) * POSFACT_Z < MLONG
138
VLT ® 5000 SyncPos option
24 TESTTIM
Once the target window has been reached the po-
sition is read twice and compared with the para-
meter TESTVAL (25). If the result is less than
TESTVAL (25), then the position has been reached,
otherwise a new reading is taken. TESTTIM indica-
tes the time interval between the measurements.
Content
Measuring time in target window
Parameter Group
AXI
Unit
ms
# 100
Value range
0 ... 10
2 5 TESTVAL
Once the target window has been reached the
position is read twice with an interval of TESTTIM
(24) and the interval is compared with the target
window limit value TESTVAL. The result determines window limit value window limit value window limit value window limit value
whether the position is viewed as having been
reached or not.
NB!
For longer time intervals it must be taken
into consideration that reaching this target
position will be delayed by this amount of time in
any case.
Content
Limit value for readings in target window
Parameter Group
AXI
# 1000
Unit
qc
Value range
1 ... 65535
TESTVAL must always be set to be
greater than TESTWIN.
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# 0
target target target
target
# 1