Systems, methods, and apparatus to provide preheat voltage feedback loss protection
First Claim
1. A welding-type system, comprising:
- a welding-type power source configured to provide welding-type power to a welding-type circuit, the welding-type circuit comprising a welding-type electrode and a first contact tip of a welding torch;
an electrode preheating circuit configured to provide preheating power through a first portion of the welding-type electrode via a second contact tip of the welding torch;
a preheat feedback circuit configured to measure a preheat voltage; and
an electrode preheat control circuit configured to;
control the preheating power based on the preheat voltage; and
control the electrode preheating circuit to reduce the preheating power in response to detecting an invalid preheat voltage measured by the preheat feedback circuit, wherein detecting the invalid preheat voltage is indicative of a loss of preheat voltage feedback from the preheat feedback circuit to the electrode preheat control circuit.
1 Assignment
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Accused Products
Abstract
Systems, methods, and apparatus to provide preheat voltage feedback loss protection are disclosed. An example welding-type system includes a welding-type power source configured to provide welding-type power to a welding-type circuit, the welding-type circuit comprising a welding-type electrode and a first contact tip of a welding torch; an electrode preheating circuit configured to provide preheating power through a first portion of the welding-type electrode via a second contact tip of the welding torch; a preheat feedback circuit configured to measure a preheat voltage; and an electrode preheat control circuit configured to: control the preheating power based on the preheating voltage; and control the electrode preheating circuit to reduce the preheating power in response to detecting an invalid preheat voltage measured by the preheat feedback circuit.
263 Citations
25 Claims
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1. A welding-type system, comprising:
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a welding-type power source configured to provide welding-type power to a welding-type circuit, the welding-type circuit comprising a welding-type electrode and a first contact tip of a welding torch; an electrode preheating circuit configured to provide preheating power through a first portion of the welding-type electrode via a second contact tip of the welding torch; a preheat feedback circuit configured to measure a preheat voltage; and an electrode preheat control circuit configured to; control the preheating power based on the preheat voltage; and control the electrode preheating circuit to reduce the preheating power in response to detecting an invalid preheat voltage measured by the preheat feedback circuit, wherein detecting the invalid preheat voltage is indicative of a loss of preheat voltage feedback from the preheat feedback circuit to the electrode preheat control circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method, comprising:
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providing welding-type power to a welding-type electrode via a welding-type power source and a first contact tip of a welding torch; providing preheating power through a first portion of the welding-type electrode via a second contact tip of the welding torch; controlling the preheating power based on measuring a preheat voltage; detecting an invalid preheat voltage that is indicative of a loss of preheat voltage feedback from the preheat feedback circuit to the electrode preheat control circuit; and reducing the preheating power in response to detecting the invalid preheat voltage. - View Dependent Claims (21, 22, 23, 24, 25)
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Specification