F1: Travel to fixed stop
6.2 General functionality
Basic Functions
312 Function Manual, 09/2011, 6FC5397-0BP40-2BA0
FOC fully automatically in REPOS
The FOC-REPOS function behaves analogously to the FXS-REPOS function.
Example:
A program moves axis X from 0 to 100 and activates FOC every 20 millimeters for 10 millimeters at a time. This
torque characteristic is generated with nonmodal FOC and therefore cannot be traced by FOC-REPOS. FOC-
REPOS will traverse axis X from 0 to 100 with or without FOC.
For programming examples of FXS "travel to fixed stop," please see:
References:
/FB1/ Function Manual Basic Functions; Mode Group, Channel, Program Operation (K1);
Section: Program test
6.2.4 Miscellaneous
Setting data
The following axisspecific setting data are provided for the "Travel to fixed stop" function:
SD43500 $SA_FIXED_STOP_SWITCH (selection of travel to fixed stop)
SD43510 $SA_FIXED_STOP_TORQUE (clamping torque for travel to fixed stop)
SD43520 $SA_FIXED_STOP_WINDOW (fixed stop monitoring window)
The setting data are effective only when the axis has reached the fixed stop.
The status of the setting data is displayed via the operator panel front in the "Parameters" area.
The commands FXS[x], FXST[x] and FXSW[x] effect a block synchronous change in these setting data.
If FXST[x] and FXSW[x] are not programmed, then, if "Travel to fixed stop" is activated, the defaults from the
following machine data is copied to the corresponding setting data:
MD37010 $MA_FIXED_STOP_TORQUE_DEF (default for fixed stop clamping torque)
MD37020 $MA_FIXED_STOP_WINDOW_DEF (default for fixed stop monitoring window)
The setting data for clamping torque and fixed stop monitoring window can be changed by the operator and via
the PLC. It is thus possible to specify a higher or lower clamping torque or a modified fixed stop monitoring
window after the fixed stop has been reached.
Changing the clamping torque using the ramp and values greater than 100%
A clamping torque change is transferred to the drive steplike. It is possible to specify a ramp to always ensure
that a modified torque limit is reached: The setting is done via the following machine data:
MD37012 $MA_FIXED_STOP_TORQUE_RAMP_TIME
Note
A continuously changing torque characteristic cannot be implemented with FOC-REPOS.
To Next Page
Loading...
Need help?
General
