MPH-02, MPB-02, MPD-02
Motor, Mechanical Axis System, Measuring Systems
5-65
DOK-INDRV*-MP*-02VRS**-FK01-EN-P
yes
no
P-0-0019
P-0-0019
Initial commissioning not yet carried out,
motor encoder not "in reference".
0b … 000
absolute
value motor
encoder
absolute
value motor
encoder
Initial commissioning was carried out, the
motor encoder was set "in reference".
0b … 01x
no
yes
P-0-0019
P-0-0019
Initial commissioning not yet carried out,
external encoder not "in reference".
0b … 000
absolute
value ext.
encoder
absolute
value ext.
encoder
Initial commissioning was carried out, the
external encoder was set "in reference".
0b … 10x
Fig. 5-78:
Actual position values when switching on a drive with encoders to be
evaluated in absolute form
Note:
The
S-0-0403, Position feedback value status
parameter
displays whether the encoders connected to the drive and the
reference encoder selected via
S-0-0147, Homing parameter
are in reference.
After the measuring systems to be evaluated in absolute form
were set "in reference" during the initial commissioning of the drive, their
actual position values in the operational status of the drive, related to the
mechanical system, are always absolute values. This is so, even when
the drive is switched off and on again!
Notes on Commissioning
The commissioning guidelines with regard to "Basics on
Measuring Systems, Resolution" and "Monitoring the Measuring Systems"
have to be observed, too!
Enter the travel range of the axis:
•
S-0-0278, Maximum travel range
Check the absolute encoder range of the respective control encoder:
S-0-0378, Absolute encoder range of motor encoder
S-0-0379, Absolute encoder range of optional encoder
Note:
The travel range and the absolute encoder ranges have the
same position reference! They refer, depending on the scaling
that was set, to the motor or to the load!
When the travel range is smaller than the absolute encoder range of the
control encoder (determined by the active operating mode) the encoder
can be evaluated as an absolute encoder. This is also displayed in the
respective bits of the following parameters:
•
S-0-0277, Position feedback 1 type
•
S-0-0115, Position feedback 2 type
By means of these parameters it is possible to deactivate the absolute
evaluation of an encoder. The actual position values then are only
relative, i.e. the encoder has to be homed again each time the machine is
restarted!
Setting the Travel Range
Absolute Encoder Evaluation
Possible?
Courtesy
of
CMA/Flodyne/Hydradyne
▪
Motion
Control
▪
Hydraulic
▪
Pneumatic
▪
Electrical
▪
Mechanical
▪
(800)
426-5480
▪
www.cmafh.com
