Tweco 400 XT Ultra-Cut Plasma Cutting System User Manual download pdf (Page 62)

ULTRA-CUT 400 XT

3-40 INSTALLATION Manual 0-5275

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.

Install the V-D Board.

1. Locate the V-D Board which should be with the iCNC.

2. InsidethePowerSupply,locateandremovethemountingpanel’s2screwsandpanel.

3. InstalltheV-DboardstandoffsandtheV-DBoardfromtheXTiCNCthenreattachthepanelwiththe2screws,securing

the V-D board in place. If using another V-D Board, follow the instructions provided mounting it in this same location.

Space for V-D Board Ohmic clip cable port

V-D Board connection

V-D Board installed

Art # A-12079

V-D Board shown with optional wire harness for iHC controller

Control Cable.

The iHC board can be supplied with a wire harness and connector (shown in previous image), to be installed in the rear panel hole

labeled “Height Control” . The connector mates with a cable from the iHC. For other height control V-D boards a strain relief can

beinstalledinthisholeforthosecables.RefertoAppendixforwiringdiagram.

USER INPUT

HEIGHT CONTROL

F1 - 8A SB 230 VAC F2 - 8A SB 230 VAC

CB4 - 5A 120 VAC

CB3 - 5A 24 VAC

CB2 - 5A 120 VAC

J55 - GCM

J15 - CNC

J59 - RAS

J70 - HE

J54 - TSC /COMM

Ohmic clip cable port

V-D Board connection

Art # A-12080

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Tweco 400 XT Ultra-Cut Plasma Cutting System User Manual Page 62