HT2000LHF, AND HT4001 PROCEDURE............................................................................. Page 8
128407 Kit Instructions
Page 1
Command THCControl PC Board Calibration
128407 KIT CONTENTS
041507Control Module PC Board
803600Instructions
PURPOSE
After installing the replacement PC board included with this kit, calibration of the THC system is required.
These instructions provide calibration procedures.
Page 2
128407 Kit Instructions
Command THCControl PC Board Calibration
REQUIREMENTS
ELECTRIC SHOCK CAN KILL
•Turn off the power and remove the input power plug from its receptacle before
removing any access cover. If the power supply is directly connected to a line
disconnect box, switch the line disconnect to OFF (O). In the U.S., use a "lock-out
/ tag-out" procedure until the service or maintenance work is complete. In other
countries, follow appropriate national or local safety procedures.
•Do not touch live electrical parts! If power is required for servicing, use extreme
caution when working near live electrical circuits. Dangerous voltages exist inside
the THC control module that can cause serious injury or death.
STATIC ELECTRICITY CAN DAMAGE CIRCUIT BOARDS
•Put on a grounded wrist strap BEFORE handling PC boards.
WARNING
Tools Needed
Digital Volt Meter
#2 Phillips Screw Driver
Small, Flat Screw Driver
128407 Kit Instructions
Page 3
THC.108
HD4070 THCControl PC Board Calibration
HD4070 PROCEDURE
1. Turn off the power to the power supply.
2. Install the replacement PC board in to the power supply and attach all electrical connections.
3Attach the volt meter to measure the arc voltage between power supply I/O board bus bars as shown
below.
Page 4
Set volt meter to
measure 100-500 VDC.
128407 Kit Instructions
HD4070 THCControl PC Board Calibration
THC.107
Torch #1
THC Control
PC Board
Torch #2
THC Control
PC Board
4. Turn on power to the power supply.
5. Put the Command THC in MANUAL MODE.
6. For 2-torch systems, select the applicable torch.
7. Begin a cutting process and compare the voltage displayed on the volt meter to the arc voltage
displayed on the CNC or power supply display.
8Adjust the potentiometer on the control board so that the voltage displayed on the volt meter is the
same as the arc voltage displayed on the CNC or power supply display.
9. Turn off the power to the power supply.
10. Remove the volt meter from the power supply.
11. Replace the access covers to the power supply.
128407 Kit Instructions
Page 5
HT4400 THCControl PC Board Calibration
THC.109
IM379.01
1
2
HT4400 PROCEDURE
1. Turn off the power to the THC control
module and to the power supply.
2. Install the replacement PC board in to the THC control module and attach the electrical connections.
3Attach the volt meter to measure the arc voltage between power supply I/O board bus bars as shown
below.
Page 6
Set volt meter to
measure 100-500 VDC.
128407 Kit Instructions
IM360.02
HT4400 THCControl PC Board Calibration
4. Turn on the power to the THC control module and to the power supply.
5. Put the Command THC in MANUAL MODE.
6. Begin a cutting process and compare the voltage displayed on the volt meter to the arc voltage
displayed on the CNC or THC pendant.
7Adjust the potentiometer on the control board so that the voltage displayed on the volt meter is the
same as the arc voltage displayed on the CNC or THC pendant.
8. Turn off the power to the THC control module and to the power supply.
9. Remove the volt meter from the power supply.
10. Replace the access covers to the THC control module and to the power supply.
128407 Kit Instructions
Page 7
THC.91
GND
ELECTRODE
WORK
J5
12345
IM360.01
IM379.01
1
2
Powermax, MAX100, MAX200, HD3070, HT2000,
HT2000LHF, and HT4001 THCControl PCB Calibration
POWERMAX, MAX100, MAX200,
HD3070, HT2000, HT2000LHF, AND
HT4001 PROCEDURE
1. Turn off the power to the power supply.
2. Turn off power to THC system
and remove power cord.
3Remove access covers from the THC control
module and the THC plasma interface assembly.
4. Install the replacement PC board in to the THC control module and attach electrical connections.
5Attach the volt meter to measure the arc voltage between J5-2 and J5-3 in the plasma interface
assembly.
Set volt meter to
measure 100-500 VDC.
Page 8
128407 Kit Instructions
IM360.02
Powermax, MAX100, MAX200, HD3070, HT2000,
HT2000LHF, and HT4001 THC
6. Replace power cord to the THC control module.
7. Turn on power to the THC and to the power supply.
8. Put the Command THC in MANUAL MODE.
9. Begin a cutting process and compare the voltage displayed on the volt meter to the arc voltage
displayed on the CNC or THC pendant.
10 Adjust the potentiometer on the control board so that the voltage displayed on the volt meter is the
same as the arc voltage displayed on the CNC or THC pendant.
Control PCB Calibration
11. Turn off power to power supply and to THC system.
12. Remove volt meter from the plasma interface assembly.
13. Replace access covers to the THC control module and the THC plasma interface assembly.
128407 Kit Instructions
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128407 Kit Instructions
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