MPH-02, MPB-02, MPD-02
Operating Modes
7-81
DOK-INDRV*-MP*-02VRS**-FK01-EN-P
•
polarity reversal of master axis position
Via parameter
P-0-0108, Master drive polarity
it is possible to invert
the polarity of the master axis position or master axis velocity.
Note:
For the operating modes "phase synchronization" and
"electronic cam shaft", the conversion of the master axis
position to a position of the slave axis depends on the scaling.
For the operating mode "velocity synchronization", the master
axis velocity is converted to a slave axis velocity.
The currently effective master axis position and master axis velocity after
the function block "electronic gear with fine adjust" is generated in the
position loop clock (advanced: T = 250µs, basic: T = 500µs) and
displayed in the following parameters:
•
P-0-0776, Effective master axis position
•
P-0-0777, Effective master axis velocity
Command Value Cycle and Actual Value Cycle in the
Position Control Modes
With modulo position scaling, the actual value cycle determines the
maximum range of actual position values at the slave axis. The drive
generates an actual position value that is within this range and that can be
read from parameter
P-0-0753, Position actual value in actual value
cycle
.
The actual value cycle is required if, in the case of phase synchronization,
synchronization is to be carried out in a range greater than the modulo
value (command value cycle or division of command value cycle).
For synchronization, the actual position value in the command value cycle
or a division of it is deduced from the actual position value in the actual
value cycle by means of modulo division. In order to always have
unequivocal values, the actual value cycle has to be an integer multiple of
the command value cycle. This has to be taken into account when
determining the actual value cycle.
Note:
In order to fulfill this requirement by parameterizing the actual
value cycle (P-0-0752), the value of parameter
P-0-0156,
Master drive gear input revolutions
should be taken into
account as a factor for determining the master axis cycle
(P-0-0750). If the requirement cannot be fulfilled by
parameterizing the actual value cycle, it is possible to have the
range of the actual value cycle calculated by the drive in
analogy to the command value cycle by setting bit 4 in
parameter
P-0-0155, Synchronization mode
.
If several electronic gear ratios are to be set at an axis (e.g. because of
different formats), there are several command value cycles resulting at
this axis. The actual value cycle then has to be set in such a way that it
complies with the least common multiple (LCM) of these command value
cycles (P-0-0155; bit 4 = 0).
If the electronic gear is not to be changed, the actual value cycle is set in
such a way that it complies with the command value cycle or a multiple of
it.
If synchronization is to be carried out only within the modulo range, the
number of load revolutions per actual value cycle of the slave axis can be
set to "1".
Currently Effective
Master Axis Position and
Master Axis Velocity
Courtesy
of
CMA/Flodyne/Hydradyne
▪
Motion
Control
▪
Hydraulic
▪
Pneumatic
▪
Electrical
▪
Mechanical
▪
(800)
426-5480
▪
www.cmafh.com
