Power Plasma
Supply CNC Interface
Signal Name Color End (1X6) End End Function
Hold – Black 5 Not J4-6 (Optional) Hold Ignition (I/O) signal used for preflow
Hold + White 1 Connected J4-5 during IHS. Also used by power unit to synchronize
Drain Drain 10 operation of multiple torch installations. Output signal
Plasma Start – Black 9 Not J4-4 Plasma Start signal maintained during plasma cut. If
Plasma Start + Blue 15 Connected J4-3 signal is lost, system must be restarted. Output signal.
Drain Drain 14
Arc Transfer – Black 31 Not J3-2 Arc Transfer signal. Contact closes after arc transfer
Arc Transfer + Red 36 Connected J3-1 and pierce delay (set on power supply front panel).
Drain Drain 25 Dry contact closure. Input signal.
Emergency Stop Black 28 28 Not
Emergency Stop Green 33 33 Connected
Drain Drain 27 27
Arc Voltage Black 32 32 Not These signals connect to the CNC. Refer to HT4001
Arc Voltage Yellow 37 37 Connected Instruction manual for signal information.
Drain Drain 26 26
Spare Black 16 16 Not
Spare Green 17 17 Connected
Drain Drain 18 18
HT4001 SETUP
3d-6 CommandTHC for X-Y Table Instruction Manual
7
Figure 3d-3 HT4001 interface cable – part number and signal list
Part number Description Length
123330 HT4001 Power Supply Interface Cable 6 ft./1.8 m
Shaded area indicates plasma interface assembly connections.
Plasma interface assembly other J3 and J4 connection points:
• J3-5 (+) and J3-6 (–) – Alternate Nozzle Contact. An optically isolated signal that indicates nozzle is in ohmic contact with work.
Ohmic contact is represented by a logic 1.
• J3-7 through J3-12 – Reserved for future use.
• J3-13 and J3-14 – Protective earth ground.
• J4-1 (+) and J4-2 (–) – Available 24 VDC, 500 mA maximum
• J4-7 and J4-8 – Pierce Complete signal used by power unit to time transition from pierce gas flow to cut gas flow. User enters this
time delay into THC. Output signal.
• J4-9 through J4-14 – Reserved for future use.
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