Hypertherm HSD130 HySpeed Plasma - Manual (Page 182)

MAINTENANCE
5-36 HySpeed HSD130 RHF Instruction Manual
Troubleshooting high-current error codes 103 and 107
1. Verify that the current sensor (CS1 or CS2) and the cables are not damaged.
2. Exchange CS1 and CS2 to see if error the code switches channels. Replace the faulty sensor if the channel
switches.
3. Look at the surge capacitor to ensure that it is not short circuited. Replace PCB6 if it is open.
4. Check for short circuits from work to negative. Resistance should be about 100K ohm from negative to work.
Resistance will vary if you have a voltage divider for a height control system.
Power supply
selection knob
Fuel-gas console
selection knob
Test 2 – using the TEST position on the process selection knob.
1. Turn the process selection knob to TEST.
2. The contactor will close and the open circuit voltage (OCV) for the chopper will show in the AMPS display.
3. The OCV is 311 VDC. The AMPS display will show approximately 280 VDC for OCV based on where the
measurement is taken.
Note: At any time while the system is cutting you can push in on AMPS knob to display the actual voltage
while cutting. The refresh rate is slow but you can compare the value to the height control set point.