
APPENDIX D: SYSTEM TIMING
STA SERIES AC CONTROLS
990-351
D-3
Roll Spot Seam Weld
DN1
DN2
FS
Current
Repeats as long as FS is active
Motormove
Valve
Solenoid
Valve
Electrode
Force
SQD SQZ UP1
W1
CO
UP2
W2
HO
OFF
All modes are program-
mable from 0 to 99 cycles.
Notes:
1
FS1 and FS2 are debounced for 30-70 ms upon opening and closing.
2
The microprocessor requires up to 70 ms of calculation time upon closure of FS1 and 50 ms of
calculation of FS2. Valves and current may have a different calculation time.
Summary of Contents for Miyachi Unitek STA-100A
Page 1: ...990 351 Rev H AC WELDER STA SERIES OPERATION MANUAL...
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Page 68: ...CHAPTER 5 MAINTENANCE STA SERIES AC CONTROLS 5 4 990 351...
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Page 96: ...APPENDIX D SYSTEM TIMING STA SERIES AC CONTROLS D 2 990 351 Continuous Seam Weld...
Page 98: ...APPENDIX D SYSTEM TIMING STA SERIES AC CONTROLS D 4 990 351 Spot Welding...
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