INSTALLATION & OPERATION MANUAL
10 | P a g e w w w . n t e n g i n e e r s . i n
Connections
MAIN THC UNIT
24V DC Supply should be connected through an external
SMPS. SMPS of minimum current rating of 2A should be
used for 100% duty cycle of the THC. To Avoid interference
use a sepeate SMPS for THC operation only. Do not share
this SMPS with any other loads. PLEASE DO NOT
CONNECT REVERSE POLARITY TO AVOID DAMAGE.
2. Motor Outputs: 3 Pin
(GND, DIRECTION+,PULSE+)
This is 5V Signal output for driving Stepper or Servo Motor
for the Z axis operation.
3. PLASMA INTERFACE CONNECTION (4 Pin)
PREFLOW
PREFLOW
This is the switch (DRY CONTACT) output for starting the
Plasma Preflow operation before pierce. If you plasma power
supply does not support preflow then please leave this
unconnected.
ARC START
ARC START
This is the switch (DRY CONTACT) output for starting the
ARC of your Plasma Cutter. Please refer your plasma power
source manual for more information of connection to your
power supply.
This contains all the signals required
for interfacing with your CNC
Controller. All the signals are isolated
and operated with 24V signal.
CNC-COMMON can be set as + or –
by setting the jumpers inside the main
THC Unit. The 4 CNC signals CNC-
CUT, CNC-CORNER, CNC-UP, CNC-
DOWN are used with CNC-COMMON
input. Default setting of CNC-
COMMON is +, so the 4 signals are
operational when –24V is supplied to
each one of them.
OK TO MOVE (2 Nos) is a dry contact
switch output for starting the motion of
your CNC Controller. Please refer
manual of your CNC Controller for
interfacing this signal with your system.
All other signals are switched by +24V.
(Down Limit, Up Limit, Collision,
Plasma Arc Transfer)
+24V and GND is also available at the
CNC IO Connector.
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