Start circuit assembly board pcb2 operation, Pilot arc current levels – Hypertherm HD4070 Rev.8 User Manual
Page 176
MAINTENANCE
HD4070
Instruction Manual
5-29
3
0 4 1 5 5 4 R A . e p s
J 1
D1
D2
D5
TP1
TP5
TP3
TP2
TP4
Start Circuit Assembly Board PCB2
Operation
The start circuit is a high-speed switch that quickly transfers the pilot arc current from the pilot arc load to the work
load. The start circuit performs 2 functions:
1. It allows the initial pilot arc current to flow through the pilot arc lead quickly, with little impedance.
2. After initial pilot arc current is established, the start circuit introduces impedance to the pilot arc load to aid in
transferring the arc to the workpiece. See schematic on following page.
Pilot Arc Control PC Board LED List
LED
Signal Description/ Function
D1
Pilot Arc Active
D2
+15 Volts power indicator
Process
Pilot Arc Current
Marking
10 amps
30-amp Process
20 amps
70-amp Process
20 amps
100-amp Process
30 amps
200-amp Process
40 amps
Pilot Arc Current Levels
The pilot arc current level will change depending on the chosen process and arc current level. See table below.
D1
IGBT Output
D2
+15 VDC
- EDGE Pro Ti Shape Cutting Control Rev.2 (288 pages)
- 80669J Rev.3 (304 pages)
- HD3070 Plasma Arc Cutting System w/ Manual Gas Console (281 pages)
- MAXPRO200 Rev.2 (294 pages)
- MicroEDGE Pro Shape Cutting Control Rev.2 (182 pages)
- HPR260 Auto Gas Preventive Maintenance Program Rev.4 (288 pages)
- Powermax1650 (317 pages)
- Shape Cutting Control (66 pages)
- PHC Sensor (58 pages)
- HTA Rev 6.00 Operators Manual (212 pages)
- HTA Rev 7.00 Install Guide (242 pages)
- THC Control Board Replacement (13 pages)
- THC Plasma Interfacer Upgrade (9 pages)
- THC X-Y Table Product Configuration (20 pages)
- D845GERG2 (128 pages)
- MRT2 (64 pages)
- MRT (98 pages)
- Duramax Hyamp Long Handheld Torches (92 pages)
- Duramax Hyamp Robotic Torch (74 pages)
- HyIntensity Fiber Laser Rev.3 (240 pages)
- PCBS-0124 (70 pages)
- SuperMicro 370SBA 533Mhz (90 pages)
- LR2075 (56 pages)
- Phoenix 8.0 (585 pages)
- LH2125 (60 pages)
- HD3070 w/ Automatic Gas (35 pages)
- HD3070 w/Manual Gas (43 pages)
- HD4070 Product Configuration (88 pages)
- HPR800XD Manual Gas Preventive Maintenance Program Rev.1 (33 pages)
- HPR800XD Manual Gas Preventive Maintenance Program Rev.1 (32 pages)
- HPR800XD Manual Gas Rev.2 (368 pages)
- HPRXD Short Torch with Integrated Lead Rev.1 (30 pages)
- HT4001 (59 pages)
- DuraChill 5 HP Air-Cooled Chiller For Hypertherm (29 pages)
- HT4001 Air Injected Water Muffler System (40 pages)
- H601 Power Supplies (62 pages)
- MAX200 Remote Switch (9 pages)
- HT4100 Plasma Arc Cutting System Operating (50 pages)
- HT4001 Plasma Arc Cutting System (259 pages)
- HSD130 HySpeed Plasma (233 pages)
- HySpeed HT2000 Plasma Arc Cutting System Rev.7 (53 pages)
- HySpeed HT2000 Plasma Arc Cutting System Rev.27 (289 pages)
- MAX200 Water Muffler (39 pages)
- HT2000LHF Product Configuration (23 pages)