Microprocessor welder controller
First Claim
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1. A microprocessor welding system controller for controlling the welding of a workpiece comprising:
- p1 switching means for selectively applying power to welding transformer; and
a single chip microcomputer means for controlling the power delivered to said welding transformer by said switching means to set the power level of said welding transformer, said single chip microcomputer including;
means for setting the time to reach said power level;
means for setting the time said power level is maintained;
means for setting the time to decrease the power level of said welding transformer to zero; and
means for controlling the polarity of the first half cycle of the power to said welding transformer.
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Abstract
A welding system controller for controlling the welding of a workpiece including a switch for selectively applying power to a welding transformer and a controller for controlling the power delivered to the welding transformer by the switch to set the power level of the welding transformer. The controller allows the operator to set the time to reach the set power level, the time the set power level is maintained, and the time to decrease the power level from the set power level to zero.
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Citations
33 Claims
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1. A microprocessor welding system controller for controlling the welding of a workpiece comprising:
- p1 switching means for selectively applying power to welding transformer; and
a single chip microcomputer means for controlling the power delivered to said welding transformer by said switching means to set the power level of said welding transformer, said single chip microcomputer including; means for setting the time to reach said power level; means for setting the time said power level is maintained; means for setting the time to decrease the power level of said welding transformer to zero; and means for controlling the polarity of the first half cycle of the power to said welding transformer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
- p1 switching means for selectively applying power to welding transformer; and
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33. A welding controller comprising:
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an SCR driver for actuating at least one SCR to selectively apply power to a welding transformer; a single chip microcomputer for controlling said SCR driver to control the power delivered to said welding transformer by said SCRs and set the power level to said welding transformer; means for selecting said power level; means for selecting the period of a synchronizing signal for said microcomputer system as an integral number of multiples of one half of the period of the line power feeding the SCRs; means for setting the time to reach said power level as an integral number of multiples of the period of said synchronizing signal; means for setting the time said power level is maintained as an integral number of multiples of the period of said synchronizing signal; and means for setting the time to decrease the power level of said welding transformer to zero as an integral number of multiples of the period of said synchronizing signal.
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Specification