Festo Электроцилиндр User Manual
Page 80
5
Commissioning
80
Festo – GDCP-CMMO-ST-EA-SY-EN – 1301a – English
Stroke limit (for record type VSL)
Upon reaching the stroke limit the drive is braked via the quick stop ramp (
FCT, “Axis”: “Quick Stop”
panel). As long as no other drive function is executed, the drive will stop at the limit stroke in a position-
controlled manner or with the parameterised holding force. Standstill monitoring is activated in closed-
loop operation.
Stroke = sum of the difference between the actual position and the position at the start of the record.
5.6.3
Force mode (only in binary profile)
The drive should exert a defined force in the force mode. The force is theoretically calculated over the
measured current for this purpose (the force is proportional to the motor current). The force mode is
only possible in the binary profile with positional feedback, i.e. in closed-loop operation.
Note
Control of the motor force occurs indirectly via current regulation. All force specifica-
tions refer to the rated motor torque (relative to the rated motor current). The actual
force at the axis should be ascertained/checked using external measurement devices
and set during commissioning.
Parameter overview/objects for record table – force mode
FCT
Record type:
Type “F” = force mode without stroke limit
Type “FSL” = force mode with stroke limit
x
Stroke limit (type “FSL” only)
x
Max. speed
1)
x
Max. acceleration
1)
x
Max. deceleration (i.e. braking)
1)
x
Force (prefix = direction of force)
x
Comments (max. 32 characters per record)
x
Applied load (linear axis: workpiece mass; axis of rotation: inertia)
x
Other CVE objects: #31 record number preselection; #141 current record number.
1)
These parameters always have a positive prefix.
Tab. 5.10 Parameters for record table in force mode