Tweco PAK 200i - Manual (Page 131)

PAK 200i
Manual 0-5335 APPENDIX A-51
Art # 12309
2
1
3
SW11
TP9
TP1 GND
0-3.3VDC
GND
Divide
by 3.
From Remote
analog Current
Control
CCM
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
J26
GND
+10.0V R1
10K
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
J55
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
J56
GCM 1000 XT
(125)
(126)
(127)
Auto-Cut XT Power Supply
(AC 300 XT)
R1
10K
AC 200 XT
105 Not Used. This is one of the reserved codes from the earlier product.
106 Pilot Timeout, no Transfer
Pilot time is limited to either 0.085 seconds (85 ms.) with CCM SW8-1 off (default for pierce starting) or 3 seconds
with SW8-1 on (used for cutting over holes, expanded metal, etc.). Arc must transfer before pilot time ends.
Code 106 is set if no arc transfer (current in work lead) was sensed before pilot timed out. If the unit does not
detect pilot current the arc starter will operate up to 15 seconds then set the 102 code. If you are getting 106 there
is pilot current somewhere. If it’s not visible perhaps it’s inside the consumables or following some other part.
Causes for 106 code:
No Pilot Visible:
• Pilot inside the consumables . Most common cause is low or no plasma gas flow through the torch.
You may be fooled into thinking you have plenty of gas flow but it may only be shield gas. For the
Ultra-Cut torch remove the shield hose (small gray hose) from the DPC. For the GCM 2010, Auto-
Cut or Pak �00 torches just turn the shield pressure regulator to zero. Place the gas control in SET
or for the DFC 3000 load a different process to cause a new gas purge. Feel for plasma flow out of
the torch, it should be a strong flow. If not there is a blockage in a hose or fitting or a solenoid in the
TVA, DPC or GCM gas control isn’t turning on.
Visible Pilot:
• First the obvious, make sure the work lead is connected both to the work and the power supply. Also
make sure the work itself is making good electrical contact with cutting table. If rusty or painted metal,
you may need to clean a spot and attach the work lead directly to the metal.
• Torch too far from work.
• Cut current set too low for torch parts being used. Pilot current is set based on cut current. If cut current
is too low pilot current will be lower and may not transfer at the height used for higher current consum-
ables.
• Preflow pressure/flow too low.
• Remote Analog Current Control switches set wrong can also result in lower than normal pilot current
setting. See section on these switch settings under section for code 104.
• Defective work lead current sensor circuit. If transfer is not sensed cut current remains at the lower start-
ing level and pilot timer (85 ms. or 3 sec, 16 sec. for PAK 200i) will time out.
107 Tip saver fault. (Pak �00i and 1Torch option only)
CCM code V2.1 tip saver is active for torches with exposed tips (Pak200i and 1Torch option for the Ultra-
Cut). Tip voltage, relative to work, is continuously monitored and if tip voltage drops below a certain
voltage as it will if the tip contacts the work, cutting current is immediately reduced to a level, usually
35A-40A, that won’t damage the tip. Current remains at this lower level as long the tip remains in contact
with the work for up to 15 seconds. If before 15 seconds is up, the torch tip is lifted to normal cutting
position the current increases to full current and normal cutting resumes. If the tip remains in continu-