8-44
Drive Functions
MPH-02, MPB-02, MPD-02
DOK-INDRV*-MP*-02VRS**-FK01-EN-P
NC Reaction on Error
Brief Description
To avoid damages to the machine some applications require that the
master (e.g. NC) retains control of the travel profile of the axes in the
case of error, too, and shuts down the machine axes in a coordinated
way. For this case, the "NC reaction on error" option was implemented; it
can be activated via parameter P-0-0117.
The master is informed of an error in the drive controller via the drive
status word (cf. S-0-0135) so that the master can shut down the machine
axes in a coordinated way and therefore avoid possible damage.
Note:
NC reaction on error is only possible with non-fatal errors
(diagnostic message F2xxx), otherwise the drive always reacts
with an immediate drive-side error reaction.
Pertinent Parameters
•
S-0-0135, Drive status word
•
P-0-0117, Activation of NC reaction on error
•
P-0-0119, Best possible deceleration
Functional Description
In the case of NC reaction on error, the axis reporting the error still is
provided with the command values preset by the master and follows
them, even in the case of error, for another 30 s. To achieve this, the
function has to be activated so that the defined time delay of 30 s
becomes effective between the detection of the error and the drive-side
reaction.
The function is activated in parameter
P-0-0117, Activation of NC
reaction on error
.
P-0-0117, bit 0:
•
bit 0 = 0
→
The drive carries out its error reaction
without delay
according to the setting in
P-0-0119, Best possible deceleration
,
after recognizing the error.
•
bit 0 = 1
→
The drive carries out its error reaction according to the
setting in P-0-0119
only 30 s after recognizing the error
. The drive,
for the duration of 30 s after detection of the error, continues following
the command values of the master and therefore allows an
NC error
reaction
.
Note:
The activation of "NC reaction on error" (P-0-0117, bit 0 = 1)
only makes sense for masters that include the respective
procedure for the case of error.
Activating the NC Reaction
Courtesy
of
CMA/Flodyne/Hydradyne
▪
Motion
Control
▪
Hydraulic
▪
Pneumatic
▪
Electrical
▪
Mechanical
▪
(800)
426-5480
▪
www.cmafh.com
