ESAB 100i Service Manual page 82

iSERIES 100 /200 /300 /400
104 Transfer Lost
Arc transferred to metal for at least 50 ms. then went out.
Causes for 104 code:
• Cut demand set much lower than recommended for torch parts, i.e. 100A consumables in torch but cut
current set for 30 or 50A (or zero). Current may be too low to keep arc on.
• Torch standoff too high for cutting process being used.
• Plasma gas flow too low due to a leak somewhere between the plasma regulator or the DPC and the torch.
Check for leaks.
• Coolant flow goes too low while cutting causing the unit to shut the arc off. This normally should set 402
fault but for reasons currently unknown sometimes the fault is 104.
o One cause of low flow is defective O-ring in the torch check valve assembly. Replacing the O-ring is the
solution.
• Remote analog current control switches set wrong.
o If remote analog current control is being used, SW8-2 (CCM CPU PCB) is on and SW11 (CCM I/O
PCB) is set to "A" (down) position, but no analog voltage connected to TB1-10 or J15-30 (CNC cable)
then cut demand will be zero, pilot will be weak, depending on torch height it may still transfer but
will immediately go out.
o If remote analog current control is not being used but either SW11 is set to the down position or SW8-2
is on also results in zero cut demand.
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
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) will time out.
A-62 APPENDIX Manual 0560956456