SYSTEM AND METHOD OF COMMUNICATING IN A WELDING SYSTEM OVER WELDING POWER CABLES
First Claim
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1. A method, comprising:
- receiving continuously worksite voltage measurement data of voltage at a welding electrode, the worksite voltage measurement data is communicated across the arc using a welding cable;
comparing continuously the worksite voltage measurement data to a welding output voltage at a welding power supply to identify a voltage difference; and
increasing or decreasing the welding output voltage using the welding power supply based at least in part on the voltage difference.
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Abstract
Systems and methods of the present invention are directed to welding systems having a welding power supply and wire feeder, where the power supply and wire feeder communicate over the welding power cables. In exemplary embodiments, the wire feeder communicates with the power supply over the welding cables using current draw pulses which are generated and recognized by the power supply. Similarly, the power supply generates voltage pulses which are transmitted over the welding power cables and recognized by the wire feeder.
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Citations
21 Claims
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1. A method, comprising:
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receiving continuously worksite voltage measurement data of voltage at a welding electrode, the worksite voltage measurement data is communicated across the arc using a welding cable; comparing continuously the worksite voltage measurement data to a welding output voltage at a welding power supply to identify a voltage difference; and increasing or decreasing the welding output voltage using the welding power supply based at least in part on the voltage difference. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A welding system comprising:
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a wire feeder having a workpiece lead connection and a weld cable connection, the weld cable connection configured to operatively couple the wire feeder to a power supply, the workpiece lead connection configured to complete a circuit between the wire feeder and a workpiece; a worksite voltage measuring component operatively coupled with the wire feeder, the worksite voltage measuring component continuously determines a worksite voltage measurement; the wire feeder is configured to receive the worksite voltage measurement, and the wire feeder is configured to transmit the worksite voltage measurement data through at least one of the weld cable connection and the workpiece lead connection. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A welding system comprising:
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a worksite voltage measuring component that continuously determines a worksite voltage measurement; and a power supply having weld cable connection configured to operatively couple the power supply and a wire feeder, the power supply provides a welding power using the weld cable connection, the power supply receives the worksite voltage measurement data through the weld cable connection, and the welding power is increased or decreased based on the worksite voltage measurement. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A welding system comprising:
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a wire feeder comprising a worksite voltage measuring component that continuously determines a worksite voltage measurement, and a comparator circuit which compares said worksite voltage measurement with a desired voltage setpoint, where said wire feeder utilizes said comparison to determine a new voltage setpoint; and a power supply having weld cable connection configured to operatively couple the power supply and said wire feeder, the power supply provides a welding power using the weld cable connection, the power supply receives the new voltage setpoint through the weld cable connection, and the welding power is increased or decreased based on the new voltage setpoint.
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20. A welding system, comprising:
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a welding power source comprising a controller having a first receiver, first transmitter and a current sense circuit; a wire feeder comprising a communication circuit having a second receiver, second transmitter and a voltage sense circuit; and at least one welding power cable coupled to each of said welding power source and said wire feeder which carries a welding power from said welding power source to said wire feeder during a welding operation; wherein said wire feeder detects an occurrence of a predetermined trigger event and communicates said occurrence of said trigger event to welding power source over said at least one welding power cable by generating a current draw signal which is detected by said current sense circuit in said welding power source; and wherein said welding power source changes said welding power in response to said current draw signal. - View Dependent Claims (21)
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Specification