Detailed Description
2.1 General functionality
Travel to Fixed Stop (F1)
2-22 Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
Determine torque limit status
The system variables $VA_TORQUE_AT_LIMIT can be used at any time to read in systems
with digital drives (FDD, MSD, HLA) whether the currently active torque corresponds to the
given torque limit.
0: Effective torque less than torque limit value
1: Effective torque has reached the torque limit value
Restrictions
The function FOC is subject to the following restrictions:
• The change of the torque/force limitation representing itself as an acceleration limitation
is only taken into account in the traversing movement at block limits (see command ACC).
• Only FOC:
No monitoring is possible from the VDI interface to check that the active torque limit has
been reached.
• If the acceleration limitation is not adapted accordingly, an increase of the drag distance
during the traversing motion occurs.
• If the acceleration limitation is not adapted accordingly, the end-of-block position is
possibly reached later than specified in:
MD36040 STANDSTILL_DELAY_TIME.
The machine parameter:
MD36042 FOC_STANDSTILL_DELAY_TIME
is introduced for this and monitored in this status.
Possible application link and container axes
All axes that can be traversed in a channel, i.e. also link axes and container axes, can be
traversed to fixed stop.
References:
/FB2/ Expansion functions; several control panels on multiple NCUs, decentralized systems
(B3)
The status of the machine axis is kept in the case of a container switch, i.e. a clamped
machine axis remains at the stop.
If a modal torque limitation has been activated with FOCON, this is kept for the machine axis
even after a container switch.
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