Welding system with power line communication

摘要

Various welding systems that provide communication over auxiliary or weld power lines are provided. The disclosed embodiments may include a multi-process welding power supply that is communicatively coupled to a pendant via an auxiliary conduit that facilitates the exchange of data and power between components of the welding system. In some embodiments, the pendant may also include auxiliary outlets that allow an operator to power auxiliary devices at the weld location. The disclosed embodiments further include a pendant with a wire spool and wire feeder drive circuitry that is configured to activate spooling during MIG welding. Embodiments are provided that also allow for bidirectional data communication over a power line in networked welding systems.

主权项

1. A welding system comprising:
an auxiliary power conductor that in operation carries a combined signal comprising an alternating current (AC) power signal having a modulated data signal superimposed thereon; a power supply unit that outputs welding power at welding terminals and outputs the AC power signal to the auxiliary power conductor, wherein the power supply unit is configured to communicate with a pendant coupled to the auxiliary power conductor via the modulated data signal on the auxiliary power conductor; and the pendant located remotely with respect to the power supply unit, wherein the pendant receives the AC power signal via the auxiliary power conductor, wherein the pendant is configured to communicate data with the power supply unit via the modulated data signal on the auxiliary power conductor.