Tweco 100 XT Ultra-Cut Plasma Cutting System - Manual (Page 60)

ULTRA-CUT 100 XT
3-38 INSTALLATION Manual 0-5272
30 - 100 Amp Parts Assembly
Cartridge Covers
O-Ring
on Torch Tip
Shield Cap Protrudes
0.063-0.083" (1.6 - 2.1 mm)
Electrode
Plasma Gas
Distributor
Tip
Shield Gas
Distributor
Shield Cap
O-Ring
on Tip
1: Stack Parts 2: Press Cartridge onto Stacked Parts
4: Check Shield Cap Protrusion
Art # A-04873
No Gaps
Between Parts
3: Thread Shield Cup onto Cartridge
Shield Cap
Shield Cup
Installing Assembled Cartridge Onto Torch Head
3.22 Voltage Divider for iHC Torch Height Control
For best plasma cutting performance it is necessary to maintain a constant height (standoff) above the metal while
cutting. Cutting tables use a Torch Height Control (THC), also called a Z axis control, most of which use feedback
from the arc voltage to control the height. Several of these, including the iHC, part of the Victor Technologies XT
CNC Controller, come with a Voltage Divider Printed Circuit Board that has to be installed inside the plasma power
supply to divide the high arc voltage down to lower levels for use with control circuits.
There is a space for mounting the V-D Board located on the upper portion of an internal vertical panel near the rear
of the power supply. Predrilled holes for mounting the iHT V�D board as well as another popular height control
are provided.
CAUTION
If using another board that doesn’t align with the existing holes, remove the panel if possible before drilling. If not
possible then every precaution must be taken to keep metal filings from being deposited inside the power supply.