Tweco SC-3000 - Manual (Page 21)

SC-3000
Manual 0-5100 2-7 INTRODUCTION
2.06 Application and System Description
The SC-3000 height control system enables a precise clearance control of plasma and oxyfuel torches
on cutting machines.
Using this height control system leads to high quality results when cutting with or without the influence
of water.
The SC-3000 system automatically controls the distance between the plasma torch and the metal sheet.
Initial position finding of the work piece
Before the system starts cutting SC-3000 precisely detects the position of the work piece and finds the
pre-selected PIERCE HEIGHT (ignition height). This process is called initial position finding.
When cutting with plasma
• tactile, by softly touching the work piece
Explanation of the system and using the Interface Enclosure
SC3000 Torch Height Control system consists of a Linear Drive (Torch Lifter Station), a Remote
Operator Terminal and an Interface Enclosure plus various cables. The Interface Enclosure contains a
115V/230V to 24VDC power supply, an interface module and a PCB with fuses, relays, LEDs and set
up switches.
Art # A-8938_AB
Inside the SC 3000 Enclosure 9-8145
Power Supply provides 24 VDC to operate the SC 3000. It is switch selectable for either 115 VAC or
230 VAC 50-60 Hz but failure to put the switch in the correct position can cause failure of the power
supply.
Interface Module
Interface Module is the green box next to the PCB. It has 3 rotary switches which allow selecting the
Address of the unit, The Baud Rate and the arc voltage input ratio. The Address and Baud Rate are used
for communication over the serial Cutbus. For now they should remain at their factory settings.
The Arc voltage may be set to accommodate different divided arc voltage ratios.