3. Drive functions
3−33
Festo P.BE−CPX−CMA X−CONTROL−EN en 0908NH
Carrying out the movement test
The movement test must be carried out without activating the
controller. The valve is only controlled here. The valve control
value is then calculated independently of any deviation. In
stead, a chamber of the cylinder is deliberately pressurized
until the drive moves. Based on the position change, it is de
cided whether it
moved in the right direction.
1. To carry out the movement test, it must be enabled
(CCON.ENABLE = 1, CCON.STOP =1). The Status move
ment test" parameter (PNU 1174) contains a flag (bit 0)
for the executed movement test. If bit 0 has the value 0,
the controller remains inactive, even if the CMAX
is en
abled. The CMAX still signals back the status enabled".
2. If a clamping unit is configured, this must be released
before beginning the movement test.
Note
Especially with a vertical configuration, releasing the
clamping unit with the controller deactivated can lead to
the drive dropping down directly after starting or even
during the course of the movement test.
· Make sure that this does not pose a safety risk.
· Recommendation for vertical operation: Deliberately
allow the drive to drop down to a stop or into the end
position before starting the movement test.
3. With the positive edge at CPOS.START, the movement test
is started when commissioning operation number 2 is
registered. The two parameters must have the value 0
here. When another function
or positioning is started, the
error E14 is signaled.
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