Renishaw PI 200, Руководство по установке

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Product description
Switch 0:
In operating situations where there is an unusually high level of background vibration,
it may be necessary to reduce the sensitivity of the TP200 to avoid false ‘air’ triggers.
These may occur on some types of CMM when large steel stylus arrangements are
used or where the CMM is inadequately isolated from the floor transmission of vibration
from nearby machinery or vehicle traffic.
Trigger level is the highest sensitivity mode and provides the best measuring
performance.
Trigger level 2
reduces the vibration sensitivity from level 1 for a small loss of
measuring accuracy.
CAUTION: All stylus tips must be requalified if the trigger level
is changed.
Switches and 2:
To prevent a HALT signal (or HALT and SYNC if probe damped mode is set) from being
falsely asserted when the probe is subjected to vibration, a time delay filter is applied.
Refer to the description in ‘trigger confirmation signal (HALT)’ section.
If a collision occurs at fast traverse speed (i.e. a position move), the filter delay time
will incur additional CMM overtravel before motion stops. It is important that the CMM
motion can stop within the available overtravel, particularly if collisions can occur
directly along the main axis of the probe in the +Z direction. To minimise the overtravel
in a collision situation, the filter delay time must be set to the shortest possible time that
will prevent ‘air’ triggers from occurring during fast traverse moves when probe damped
mode is asserted.
Switches 11 and 12 are used to select the nominal filter times indicated in table 3.
Table - Function of switches and 2
Time delay Switch Switch 2
2.0 ms DOWN DOWN
7.5 ms DOWN UP
15.0 ms UP DOWN
50.0 ms UP UP
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