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.