NUM 1020 - Checks Included in N;M AUTO; Acceleration Checks; Speed Checks; Check of Travels

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9.5 Checks Included in N/M AUTO
The following checks are included in N/M AUTO:
- acceleration check
- speed check
- check of travels
- miscellaneous checks.
9.5.1 Acceleration Checks
When the N/M AUTO function is active, the maximum permissible acceleration is the
maximum acceleration on the corresponding NMA axis (see machine parameter P32
(even word): F for work rate). If this acceleration is exceeded, the speed on the NMA
axis is limited.
If the RTCP function is active, a second limit is applied so as not to exceed the
maximum accelerations applicable to the work rates on the driven axes (see P32).
Reminder: If a driving axis of RTCP is declared as uninterpolated, the variation of the
interpolation rates is prepared using an acceleration which is equal to half the
maximium permissible acceleration.
9.5.2 Speed Checks
The speed on the NMA axis driven by handwheel is thespeed defined in machine
parameter P31. VITMAN1 and VITMAN2 are applied in manual mode.
If the RTCP function is active, a second limit is applied so as not to exceed the
maximum speeds authorised on the driven axes (see P30).
Reminder: The interpolation speeds can be modulated by the values assigned to
parameters E7x101.
9.5.3 Check of Travels
The overtravel test is carrried out according to the definition of machine parameter
P17. The NMA axis is stopped when it approaches the limit switches.
If the RTCP function is active and a driven axis approaches the limit switches, a cycle
hold is generated automatically to stop the interpolator.
The NMA axis can be retracted from the limit switches using the axis jogs or
handwheel controlling it.
The user can restart the programme by pressing START CYCLE.
9.5.4 Miscellaneous Checks
No test is made to check for conflict with G12 (overspeed). Homing must be
completed on the NMA axes.