ID 442426.04 389WE KEEP THINGS MOVING
Diagnosis
16
Manual SD6
16.21 51:Virtual master limit switch
Triggering Level Response Counter
The position of the virtual master is outside of the
parameterized limits.
Parameterized
level in U24:
•Inactive
• Message
• Warning
•Fault
Parameterized fault response in A29:
• A29 = 0:inactive
The power board is switched off and the drive
becomes torque-free/force-free. If the air override is
inactive, a possibly existing brake will be controlled to
close.
• A29 = 1:active
The drive is stopped with a quick stop. If the air
override is inactive, a possibly existing brake will be
controlled to close at the end of the quick stop.
Z51
Cause Description Measure Confirmable
1:SW limit switch positive The virtual master has left the range of
motion beyond the positive limit switch.
• Move back in the opposite direction from
the limit switch into the travel range.
• Check the position of the software limit
switches in G146 and G147.
Note that if limit switches are crossed, after
acknowledgement you must jog back into
the permitted range with the drive.
Yes
2:SW limit switch negative The virtual master has left the range of
motion beyond the negative limit switch.
3:Computing limit The computing limit has been reached. • Reduce G46 decimal digits.
• Do not perform MC_MoveAdditive too
many times in a row without stopping in
between
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