Reactions:
Remedy:
Program Continuation:
Axis %1 drive %2 wrong piston position
%1 = NC axis number %2 = Drive number
The error is triggered if the actual position of the drive is negative.
Cause:
Incorrect counting direction of actual position on drive side.
Incorrect piston zero alignment.
If the drive is referenced and the offset between the piston zero (piston stop at A side) and the machine zero is entered in MD 5040, the piston position in MD 5741 can only indicate positive values (from zero to piston stroke length).
- Mode group not ready.
- The NC switches to follow-up mode.
- Channel not ready.
- NC Start disable in this channel.
- Interface signals are set.
- Alarm display.
- NC Stop on alarm.
- Channel not ready.
The counting direction for the actual position is correct on the drive side if:
1. Pos. setpoint voltage (e.g. function generator) -> cylinder piston travels from A to B. If not: Invert the actuation signal (change MD 5476 bit 0).
2. Cylinder piston travels from A to B -> v_act (MD 5707) > 0. If not: Invert the actual value (change MD 5011 bit 0).
Check the piston zero alignment and correct if necessary:
Set MD 5012 bit 14 and bit 15 to zero, save bootfile, reset NCK, perform a reference point approach and then align the position.
Clear alarm with the RESET key in all channels of this mode group. Restart part program.
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