Thermal Dynamics Cutmaster 82, Руководство по обслуживанию

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cutmaster 82
Manual 0-4980 5-13 SERVICE
E. INPUT POWER FAULT.
AC LED on, FAULT Indicator and 65 PSI LED is
flashing.
1. INPUT VOLTAGE SELECTOR SWITCH (SW2)
set for incorrect voltage
a) Set SW2 to correspond to the primary line volt-
age. Turn SW1 to OFF position then back to
ON position to clear the error.
2. Defective SW2
a) Check continuity
3. Primary line voltage out of tolerance range.
a) Connect unit to voltage with unit specifications.
See section "2.04 Power supply specifications".
If using a generator, connect unit to a wall re-
ceptacle to see if problem is corrected.
4. Defective Main Pcb
a) Measure voltage on Main Pcb between test
point GND1 to J2-22. 460 VAC input = approx
3 VDC 230 VAC input = approx 1.5 VDC
b) With all power removed from the unit, discon-
nect the ribbon cable from J2 connector on
Main Pcb. Check continuity between J2-34 to
test point GND 1. With SW2 in LOW position
continuity should be present, with SW2 in the
HIGH position. It should read open
If not correct, replace Main PCB assembly
5. Defective Logic assembly
a) Replace Logic PCB
F. PARTS-IN-PLACE (PIP) FAULT. The FAULT
Indicator and 70 PSI LED is flashing.
1. Shield Cup loose
a) Hand tighten the shield cup to close the PIP
switch
2. Torch not properly connected to power supply
a) Insure torch ATC is securely fastened to unit.
3. Problem with torch and leads PIP circuit
a) Check continuity of torch PIP circuit at ATC
pins 1 & 2.
Negative / Plasma Lead
4 Torch Switch
3 Torch Switch
2 PIP
1 PIP
Pilot Lead
Art # A-08124
4. Defective Logic Pcb
a) Measure the voltage on Main Pcb between J2-17
to test point GND1 for 12VDC. If the voltage
is less than 2VDC, Replace Logic Pcb
5. Defective Main Pcb
a) Replace Main Pcb
G. TRIGGER LOCKED DURING POWER UP
FAULT. The FAULT Indicator and 75 PSI
LED is flashing.
1. Start signal is active when SW1 is turned to ON
position.
a) Start can be active for one of the following:
• Hand torch switch held closed
• Hand pendant switch held closed
• CNC START signal is active low
Release the START signal source
2. Problem in the torch and leads switch circuit
a) Check continuity of torch switch circuit at ATC
pins 3 & 4. See previous illustration.
3. Short in CNC cable
a) Check continuity
4. Defective Logic Pcb (PCB3)
a) Measure voltage at Main PCB between J2-16
to test point GND1 for 12VDC. If voltage is
present, replace Logic PCB
5. Defective Main PCB
a) Replace Main PCB.