WTC Technitron T2050 - Application Example; Successive Welding Application Example; Schedule #1 Programming

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A part has two different spot welds made successively. The first
weld is made, the part is rotated and pieces are added to the part
for the second weld. Before each weld, a clamp is used to gauge
and hold the part precisely before the electrodes are engaged.
After the second spot weld, the gauging clamp must fully retract
before a part stripper ejects the part into a box. Each box holds 25
parts. The clamp is assigned to SV1, gun valve to SV2 and the
part stripper to WCOMP. SW2-7 must be closed for binary valve
operation. Refer to “Binary Valve/Function Table” on page 9-47.
The procedure for programming this example follows:
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4. Assign Schedule #1 to clamp and align the parts before
making the first spot weld:
SCHEDULE=1
VALVE=1 ;Energize the gauging clamp SV1
SQUEEZE DELAY=0 ;N/A
SQUEEZE=40 ;Give the clamp time to align the
parts
UPSLOPE=0 ;N/A
WELD CYC=0 ;N/A
WELD CUR=20% ;N/A
COOL=0 ;N/A
IMPULSES=1 ;N/A
DOWNSLOPE CYC=0 ;N/A
SLOPE END CUR=20 ;N/A
QUENCH CYC=0 ;N/A