Renishaw PI 200, Руководство по установке

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Product description
2. Stylus mass and ambient temperature
compensation
In the TP200, probe a reference strain sensor, outside the strain path, adjusts the
current in the active strain sensors to provide compensation for slow, uniform, changes
of ambient temperature.
Fine compensation for thermal drift is provided by a system known as ‘autozero’ that
nulls the sensor amplifiers at a slow rate when the probe is armed. Under the control
of the PI 200 interface, the autozero automatically switches to a fast rate to reset
the probe sensors during a stylus change with the SCR200 change rack or during
reorientation of a motorised probe head.
When the probe is in the triggered state, the compensation is switched off. If the stylus
remains deflected for longer than 10 seconds, drift of the zero reference may occur.
The audible warning will sound after this period to indicate that the probe must be reset
manually.
2.7 RESET button
CAUTION:
Probe triggers are inhibited when the RESET button is pressed.
Before pressing the button, the CMM must be stationary in manual mode with
the probe stylus clear of the workpiece.
The RESET button on the front panel selects fast autozero to rapidly null the sensor
amplifiers.
This may be necessary when:
1. The probe does not arm after manually changing the stylus.
2. The audible alarm is sounding a continuous tone to warn that the stylus has been
deflected for longer than 10 seconds.
NOTE:
Alternatively, the probe may be reset by the action of unlocking and locking the
PH10T or PH10M motorised head. Refer also to the ‘remote reset’ section.
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