CUTMASTER 40MM
Manual 0-5085 5-11 SERVICE
11. Open the torch switch
• DCLEDturnsOFF
After 20 second post flow time
• Gassolenoidcloses
• Gasowstops
For Automation Torches - Skip steps 12 & 13
12. Set the FUNCTION CONTROL SWITCH to
LATCH mode
13. Start a cut, and remove the START signal.
• MaincuttingarcwillremainONuntilthetorch
is lifted away from the plate approximately ¾”
(19 mm) or until the torch is brought OFF the
edge of the metal
Once the arc has extinguished
• DCLEDturnsOFF
After 20 second post flow time
• Gassolenoidcloses
• Gasowstops
• Ten(10)minutesafter theStartsignalisre-
moved, the cooling fans turn OFF.
This completes the Main Arc and Controls Test. If the
above are all correct then proceed to the next section
"H CNC Interface Test." If the unit does not function
as stated above, then note the symptom and proceed to
Section "5.09, Main Arc and Controls Problems".
H. CNC INTERFACE TEST
If the unit has one of the two factory supplied options
for CNC interface installed, proceed with this section,
otherwise the tests are complete.
1. Connect an ohmmeter between CNC connector
(Pins 12& 14 (OK-TO-MOVE signal). Position the
torch to pilot. Check the OK-TO-MOVE signal by
connecting a jumper between CNC connector pins
3 & 4 (START)
• Pilotarcisestablished
2. Bring the torch to the work piece and transfer to
cutting arc.
• OK-TO-MOVEsignalispresent.(Metershows
continuity)
3. Remove jumper from the CNC connector.
• OK-TO-MOVEsignalOFF(Metershowsno
continuity)
• Gascontinuestoow
• DCLEDgoesOFF
After 20 second Post flow time
• Gassolenoidcloses
• Gasowstops
If the unit has the Basic CNC Interface harness the
test is complete. If the unit does not function as
stated above, then note the symptom and proceed
to Section "5.10 CNC Interface Problems".If the unit
has the Automation Interface PCB installed, continue
with this section.
4. There are three (3) ARC VOLTs signals available
from the J1 connector.
a) J1-9 (+) to J2-7 (-)
b) 2-5 (+) to J2-6 (-) (Auto Interface PCB 4 con-
nector P1 with no jumper installed = ARC
VOLTS divided by 16.67.
c) J2-5 (+) to J2-6 (-) (Auto Interface PCB 4 con-
nector P1 with jumper installed between pins
1 and 2) = ARC VOLTS divided by 30
d) J2-5 (+) to J2-6 (-) (Auto Interface PCB 4 con-
nector P1 with jumper installed between pins
2 and 3) = ARC VOLTS divided by 50
Measure the voltage between these points while
piloting (Open Circuit Voltage) and while cutting.
The voltages should approximately as listed below
Open Circuit Voltage Cutting Voltage
a) 300 VDC 100 VDC
b) 18 VDC 6 VDC
c) 10 VDC 3.3 VDC
d) 6 VDC 2 VDC
This completes the CNC Interface Test. If the above are
all correct then the unit is functioning correctly. If the
unit does not function as stated, then note the symptom
and proceed to Section "5.10, CNC Interface Problems".
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