7-122
Operating Modes
MPH-02, MPB-02, MPD-02
DOK-INDRV*-MP*-02VRS**-FK01-EN-P
"Absolute" Parameterization
1. In the case of absolute scaling, the maximum travel range in
parameter S-0-0278 has to be selected at least as large as the range
in which the synchronous position data are to be contained.
2. Depending on parameter
P-0-0750, Master axis revolutions per
master axis cycle
, the range of values for the master axis can be
between 0 and 2047
*
2
20
increments. In the special case
P-0-0750 = 0, the master axis range is from –2
31
to 2
31
-1.
3. The "absolute" master axis is a master axis the master axis positions
of which are within the master axis cycle determined by parameter
P-0-0750, Master axis revolutions per master axis cycle
. The
master axis positions in this case do neither overflow nor underflow.
This possibility is not used for practical application. Theoretically, the
absolute master axis could be used for infinite cam shafts (e.g. linear
cam shafts) and/or when a gear reduction (P-0-0755) unequal zero is
selected.
Note:
When a gear reduction (P-0-0755
≠
0) has been
parameterized, the modulo overflow of the master axis mustn't
take place with absolute position scaling! Otherwise, this
would cause unwanted jumps in position.
The "modulo" master axis is a master axis the master axis positions of
which are within the master axis cycle determined by parameter
P-0-0750, Master axis revolutions per master axis cycle
. The master
axis positions may overflow or underflow (infinitely turning master axis).
This master axis is used in conjunction with a finite cam shaft (initial
value = final value) and when there is no gear reduction (P-0-0755 = 0). If
you select a gear reduction, the drive, with infinitely turning master axis,
will sometime leave the max. travel range.
Note:
Incorrect parameterization can cause unwanted jumps in
position. It is recommended that you activate the position limit
value monitor!
See "Limitations: Position Limit" in chapter "Drive Control"
4. The distance that the slave axis covers per master axis revolution is
determined in parameter
P-0-0159, Slave drive feed travel
.
5. Settings for the electronic gear are made in the following parameters:
•
P-0-0083, Gear ratio fine adjust
•
P-0-0108, Master drive polarity
•
P-0-0156, Master drive gear input revolutions
•
P-0-0157, Master drive gear output revolutions
6. The following settings have to be made for synchronization:
•
synchronization mode for reaction to changes in parameter
S-0-0048 after first synchronization (P-0-0155, bit 0)
•
relative or absolute synchronization (P-0-0155, bit 1)
Maximum Travel Range
Master Axis Position Range/
Master Axis Cycle
"Absolute" Master Axis
"Modulo" Master Axis
Slave Drive Feed Travel
Electronic Gear
"Absolute" Synchronization
Courtesy
of
CMA/Flodyne/Hydradyne
▪
Motion
Control
▪
Hydraulic
▪
Pneumatic
▪
Electrical
▪
Mechanical
▪
(800)
426-5480
▪
www.cmafh.com