CNC CONNECTOR PIN OUT
Pin and board numbers correspond to each other. 8 is not used.
Pins1 and 2 activate (turn on) the plasma cutter.
Pin 9 and 10 gives the “OK to Move” signal. These are Dry “N.O.” style contacts. It is non-
electronic switch that closes when the pilot arc transfers to cutting arc. Sometimes referred
to as “Arc OK”.
Pins 5 and 7 provide the raw, undivided arc voltage, which is used by some controllers to
adjust the height of the torch(THC). This is the actual cutting voltage. It runs through 2-100kΩ
resistors to prevent arcing at the connector plug. Some controllers may use the raw voltage,
and is dependent upon the impedance of the input. CandCNC*controller and Torchmate*do
not use this voltage.
Pins 4 and 6 provide the divided arc voltage. The CNC circuit board to create 1/16th of the
raw arc voltage. It may be used by some controllers for torch height control(HTC).
Pins 11 and 12 provide the divided arc voltage. The CNC circuit board to create 1/50th of the
raw arc voltage. It may be used by some controllers for torch height control(HTC).
Pin 3 is what some controller manufactures refer to as “Ground” this is connecter directly to
the work piece lead, which is actually a positive polarity. If the controller has a pin for ground
this is likely the pin to use.
NOTE: Do not connect anything directly to the output terminals or leads. Do not connect anything from
the controller to the chassis of the cutter, especially a ground lead. Do not install any kind of converter
or divider inside the machine.
*
LOTOS does not particularly endorse or recommend these brands and is not affiliated with them in anyway. They are mentioned as a common reference
only. For specific recommendations regarding connection, contact the manufacturer of the CNC equipment/controllers
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