Mazak STX SC L PLUS CONTROL Training Manual page 26

NOTES ON THE WEIDMULLER NON-CONTACT SENSOR
1> ALWAYS MAKE SURE THAT THE "NON-CONTACT NEGLECT" SWITCH IS IN THE
CORRECT POSITION FOR THE TYPE OF SENSOR USED. A CRASH WILL OCCUR IF THIS
IS OVERLOOKED IN EITHER THE CONTACT OR NON-CONTACT MODE.
2> THE NON-CONTACT SENSOR ONLY WORKS ON METAL.
3> WHEN OVERRIDING THE FOCUS/GAP WITH THE G87 COMMAND OR THE MANUAL
"GAP" OVERRIDE, THE ACTUAL AMOUNT THAT THE "Z" AXIS CHANGES IS NOT
LINEAR. THIS IS DUE TO THE NATURE OF A CAPACITIVE SENSOR AND WILL NEVER
BE LINEAR LIKE THE POTENTIOMETER USED IN THE CONTACT STYLE HEIGHT
SENSOR. IN ORDER TO DETERMINE THE AMOUNT OF OVERRIDE WHICH ACTUALLY
OCCURS, ENTER AN M32; G87P__; IN THE MDI MODE AND TRY VARIOUS VALUES FOR
THE G87 P VALUE UNTIL THE APPROPRIATE GAP IS FOUND.
4> NEVER ATTEMPT TO SET UP THE MACHINE OR USE A G87 TO GET A NOZZLE GAP
LESS THAN 0.025". THE SENSOR IS NOT STABLE AT FOLLOWING HEIGHTS OF LESS
THAN 0.025".
5> NEVER ATTEMPT TO USE THE SENSOR WITH A GAP GREATER THAN 0.0700". IF THE
SENSOR IS SET UP FOR A GAP GREATER THAN 0.0700" OR IF A GAP OVERRIDE IS USED
FOR A GAP GREATER THAN 0.0700", THE "Z" AXIS WILL RESPOND VERY SLOWLY OR
MAY RISE WHEN AN M32 COMMAND IS EXECUTED.
6> A STYLUS ALARM WILL OCCUR IF ANY OF THE FOLLOWING OCCUR:
A) A WIRE IS BROKEN OR MISCONNECTED.
B) THE NOZZLE, CERAMIC OR SENSOR BODY IS EXTREMELY DIRTY.
C) THE CERAMIC DOES NOT MAKE CONTACT WITH THE SPRING LOADED PIN.
7> WHEN THE NOZZLE SHORTS TO THE MATERIAL OR CUTTING TABLE, AN "AUTO GAP"
ALARM WILL OCCUR AND STOP OPERATION. THIS FEATURE CAN BE TESTED BY
SHORTING THE NOZZLE TO THE MATERIAL WITH A PIECE OF METAL. TOUCHING THE
NOZZLE WITH YOUR HAND MAY OR MAY NOT CAUSE THE ALARM DEPENDING ON THE
HUMIDITY AND TYPE OF CERAMIC USED.
8> IF THE "Z" AXIS OSCILLATES DURING ITS APPROACH OR WHILE CUTTING, CHECK THE
FOLLOWING:
A) MATERIAL IS VIBRATING.
B) MACHINE PARAMETERS ARE SET TOO HIGH
C) THE GAP IS TOO SMALL.
D) THE NOZZLE OR CERAMIC IS DIRTY.
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