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PI 200-3 fault finding
The CMM will not register a probe trigger but the probe operates normally when the stylus is deflected by hand:
PI 200-3 indicators | Possible causes | Remedy |
|---|---|---|
STOP LED is ON.
TP200 LED is ON.
SEATED LED operates normally. | The CMM controller or a Renishaw system has actived the STOP signal.
The SCR200 overtarvel mechanism is deflected. | Check the status of the Renishaw motorised probe head or other systems. |
The probe fails to trigger and the probe LEDs glow only dimly when the stylus touches the workpiece, but the probe operates normally when the stylus is deflected by hand:
PI 200-3 indicators | Possible causes | Remedy |
|---|---|---|
SEATED LED is ON. | The trigger speed is too slow.
The stylus is too heavy. | Probe normally to the work piece.
Increase the gauging. |
The probe will not arm or the probe does not stay armed when the RESET button is released. The probe LEDs are always OFF:
PI 200-3 indicators | Possible causes | Remedy |
|---|---|---|
STD LED is ON.
SEATED LED is OFF. | The probe sensor is faulty.
The probe wiring is open circuit. | Remove the probe and test by substitution.
Check the wiring from the probe to the PI 200-3 interface. |
False ("air") triggers occur while the CMM is stationary and the probe LEDs flicker:
PI 200-3 indicators | Possible causes | Remedy |
|---|---|---|
TP200 LED is on.
SEATED LED operates normally. | The probe sensor is faulty.
The probe is loose in the probe head.
There is excessive vibration from an external source.
There is excessive vibration from the CMM. | Remove the probe and test by substitution.
Correctly tighten the probe.
Remove the cause or isolate the CMM.
Check the CMM's air supply.
Maintain the CMM's air bearings. |
False ("air") triggers occur at gauging speed and the probe LEDs flicker:
PI 200-3 indicators | Possible causes | Remedy |
|---|---|---|
DAMPED LED is OFF.
SEATED LED operates normally. | The stylus is too large or too heavy.
There is excessive vibration from the CMM. | Use stylus arragements within recommendations.
Check the CMM's air supply.
Maintain the CMM's air bearings. |