CHAPTER 4: ELECTRICS 4 - 23
TRYTON 112 CNC
c) Lathe clamp signal (PLC input A1)
This signal is for checking the mode of the lathe clamping device (open), and is mainly used
for the feeding of a part, which takes place each time the clamp opens.
For safety reasons, wire a normally open contact, coming from the signal of the
lathe clamp. A clamp open signal must be selected.
d) Lathe in automatic cycle (PLC input A2)
This signal indicates that the lathe is in automatic cycle.
e) Load command (PLC input A3)
Should the lathe be equipped with a sub-spindle or the lathe is of twin spindle type, should
the part require multiple feeds, this signal will be used as a load command from the lathe.
For safety reasons, and to prevent collisions between the part being transferred to the second
spindle and the newly loaded bar stock when there is a simultaneous loading, the lathe must
control the loading of a new bar.
f) Feeding pusher control (PLC input A4)
This signal orders the forward movement of the feeding pusher and the bar, independently
of the mode of the lathe clamp.
As long as this signal is present, the signal of the foot switch to open and close
the clamping device of the lathe, must be locked. The lathe should not start up
in automatic cycle as long as the clamping device does not grip the bar.
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