Thermal Dynamics cutmaster A60, Руководство по обслуживанию

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CUTMASTER A60
SERVICE 5-8 Manual 0-4982
G. Main Arc and Controls Test
Connect work Cable to the work piece, Close torch
switch (Pendant switch or activate CNC Start) to es-
tablish a pilot arc. Bring torch to within 1/8” – 3/8”
of the work piece to establish main cutting arc.
• Main Cutting Arc Establishes
• On Main PCB D59 turns OFF and D78 turns
ON
1. Clamp DC ammeter around the work cable. Out-
put will be 80 amps.
2. While cutting, adjust the CURRENT CONTROL
POTENTIOMETER from maximum setting to
minimum setting.
• Current adjusts from 80 amps down to 20
amps
3. Set the CURRENT CONTROL POTENTIOM-
ETER to maximum position.
• Current adjusts from 20 amps up to 80 amps
4. While cutting, touch the tip of the torch to the
work piece, This is called Drag Mode.
• Tip Saver circuit will activate, current drops
to 60 amps.
5. Lift tip OFF the plate approx 1/4” (6 mm)
• Tip Saver circuit deactivates, current goes back
to 80 amps
6. While cutting keep the torch switch closed, bring
the torch OFF the edge of the material.
• Cutting arc extinguishes
• Gas solenoid closes
• Gas flow stops momentarily then restarts
when solenoid opens
• Pilot arc ignites
7. Remove CNC start signal or release the Remote
Pendant or Torch switch.
• DC LED turns OFF
After 20 second post flow time
• Gas solenoid closes
• Gas flow stops
8. Set the FUNCTION CONTROL SWITCH to
RAPID AUTO RESTART mode.
9. Close torch switch (Pendant switch or activate
CNC Start) to establish a pilot arc. Bring torch to
within 1/8” – 3/8” of the work piece to establish
main cutting arc.
10. While cutting keep the CNC Start signal active or
the Remote Pendant or Torch switch closed and
bring the torch OFF the edge of the material.
• Pilot Arc re-ignites immediately
11. Open the torch switch
• DC LED turns OFF
After 20 second post flow time
• Gas solenoid closes
• Gas flow stops
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
1. Connect an ohmmeter between J2-12 to J2-14
(START signal). Position the torch to pilot. Check
the OK-TO-MOVE signal by connecting a jumper
between J2-3 and J2-4 (START signal).
• Pilot arc is established
2. Bring the torch to the work piece and transfer to
cutting arc.
• OK-TO-MOVE signal is present. (Meter shows
continuity)
3. Remove jumper from J6.
• OK-TO-MOVE signal OFF (Meter shows no
continuity)
• Gas continues to flow
• DC LED goes OFF
After 20 second Post flow time
• Gas solenoid closes
• Gas flow stops
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.