SECTION 6
PCM-875A Plasmarc System
Troubleshooting
6-3
6.2.3 The Power light is on, but nothing happens when the torch is signaled to fire.
Fault light does not activate.
NOTE: Unplug high frequency connection before
attempting to work on this problem.
·
Check the Pilot Arc fuse (F2) located on the rear
panel. An open fuse will indicate a short in the torch. If
the fuse is all right, then check the following:
§
With the machine power on, depress the torch
switch. On the control board the LED 1 should be
lit as long as the switch is depressed. If not then
check:
§
Turn power off to the machine. Unplug Control
board. Put an ohmmeter across P5-1 and P5-2 to
take resistance reading. Depress torch switch.
Meter should read a short. If not, then one of the
following is not working properly:
§
Torch switch or the leads. Unplug the torch
switch leads at the machine. Put a meter across
the two plug pins. Should read a short when the
torch switch is depressed. If not, then either
broken switch leads or malfunctioning switch.
§
Check T2 transformer secondary voltages at the
plugs P1 and P2. Refer to system schematic.
Replace the transformer if the correct secondary
voltages are not present.
If everything above checks out all right, then the PCB1
Control Board should be replaced.
Содержание PCM-875A
Страница 27: ...SECTION 2 PCM 875A Mechanized Plasma Cutting System Description 2 5 2 4 2 Dimensions 435 mm 34 9 mm ...
Страница 48: ...SECTION 3 PCM 875A Mechanized Plasma Cutting System Installation 3 20 This page intentionally left blank ...
Страница 72: ...SECTION 4 PCM 875A Mechanized Plasma Cutting System Operation 4 24 This page intentionally left blank ...
Страница 84: ...SECTION 5 PCM 875A Plasmarc Cutting System Maintenance 5 12 This page intentionally left blank ...
Страница 112: ...SECTION 7 Replacement Parts 7 4 PCM 875A Power Console 230V P N 0558003356 230V CE 1 2 3 4 5 6 7 8 9 10 11 12 ...
Страница 120: ...SECTION 7 Replacement Parts 7 12 PCM 875A Power Console 400V P N 0558003357 400V CE 1 2 3 4 5 6 7 8 9 10 ...
Страница 126: ...SECTION 7 Replacement Parts 7 18 7 5 Remote Arc Starter RAS 2 P N 0558003670 A A B B View B B View A A 1 2 3 4 4 ...
Страница 128: ...SECTION 7 Replacement Parts 7 20 Remote Arc Starter RAS 2 P N 0558003670 1 2 3 4 5 6 7 5 REF 8 9 10 11 12 12 ...
Страница 130: ...SECTION 7 Replacement Parts 7 22 7 6 PT 20AMX Plasmarc Cutting Torch 1 4 6 7 8 9 10 11 12 13 14 16 2 3 5 17 18 1 15 ...
Страница 132: ...SECTION 7 Replacement Parts 7 24 PT 20 AMX Front End and Spare Parts Kit 1 2 3 4 5 8 6 7 9 ...
Страница 134: ...SECTION 7 Replacement Parts 7 26 This page intentionally left blank ...
Страница 135: ...See back of Title Page for revision list ...