Diagram 3 – Arc Machines 415 WDR User Manual
Page 38
Model 415
Operation Manual
3. The Weld Current calibration schedule will be run in WELD Mode and will contain the following:
Onelevel Functions
Prepurge
10
Torch Gas Rate
40*
Upslope
1.0
Start Level
25
Num Starts
1
Postpurge
20
Level Advance
Manual
Downslope
5.0
Stubout Mode
On*
Start Mode
Touch*
Multilevel Level 1 Functions
Pri Amps
200
Bck Pulse
10.0
Bck Amps
200
Pulse Mode
OFF
Pri Pulse
10.0
Travel Step
OFF
Multilevel Level 2 Functions
Pri Amps
400*
Bck Pulse
10.0
Bck Amps
400*
Pulse Mode
OFF
Pri Pulse
10.0
Travel Step
OFF
*Maximum torch value of 300 amps – use 300 amps here. Step 5.6-6-9 value would then be
3.75 VDC +/- 0.037 VDC.
4.
Level Time will be in the Manual Mode requiring the operator to Sequence stop the M-415
after measurements and any required adjustments are done. Pulse Mode should be OFF so
only the Primary Current Amps is checked. The Primary Amps should be set to 200 for the
Initial measurement. Insure that the Travel Mode switch is set to OFF. It is very important
the calibration measurements are done quickly, so not to melt the work piece. A suggestion
is to make the necessary connections to the PCB test points and disconnect the test
leads at the DMM until an arc is established.
5.
Recall from the LIBRARY the appropriate Calibration Weld Schedule.
6.
CURRENT
CALIBRATION WITHOUT EXTERNAL SHUNT
1.
Connect the negative test lead to TP-2 and the positive test lead to TP-1 of the weld
current servo. The Current Servo (P/N 13D150300-01) can be accessed through an
opening in the upper deck plate just below the Interface PCB.
TP-1
R-39
DO NOT ADJUST
FACTORY PRESET
INTERFACE A 0/1 B 0/1
TP-2
TP-3
R36
DIAGRAM 3
Document No. 740084
Revision N
33