369 results about "Welding power supply" patented technology

The invention relates to the technical field of data processing, and discloses a high-temperature early warning method and system for a welding device. The method comprises the following steps: carrying out multi-point temperature measurement by using a K-type thermocouple and an infrared thermal imager; fourier heat conduction calculation is conducted on the welding heat field; extracting temperature anomaly region features through thermal gradient analysis; carrying out multi-parameter risk assessment by combining material melting point parameters; a multi-channel alarm instruction is output through the industrial control bus; and current-voltage curve real-time adjustment is conducted on the welding power source, and closed-loop self-adaptive control is achieved. According to the method, a complete closed-loop system from multi-sensor temperature collection, thermal field analysis, abnormal feature extraction and risk assessment to multi-stage alarm and self-adaptive control is established, so that early recognition and accurate control of thermal abnormality in the welding process are realized, and the welding quality and the production safety are remarkably improved.

The invention relates to the technical field of welding robots, in particular to a full-automatic walking intelligent welding robot. According to the technical scheme, the full-automatic walking intelligent welding robot comprises an I-shaped iron rail, a walking positioning trolley, a welding power source, a wire feeder, an industrial computer, a discharging mechanism, a placing mechanism, an adjusting module, a three-dimensional scanner and a welding gun. Welding materials are stored through a discharging mechanism, a placing mechanism and an adjusting module which can be used for taking out the welding materials, placing the welding materials to a welding position and driving a welding gun to reach a proper welding angle, a three-dimensional scanner used for sending three-dimensional coordinate points of a welding piece to an industrial computer is arranged at the upper end of the adjusting module, and wheel flanges are designed on a driving wheel and a driven wheel of a walking mechanism. By means of the design, it can be guaranteed that the positioning trolley can accurately take the edge of the I-shaped iron as the positioning reference, so that the welding track is accurately controlled, and meanwhile the design of the wheel flanges can prevent the trolley body from slipping off and instability caused by linear deviation of the I-shaped iron.

An example welding includes a torch head and a handle including a first coolant line configured to conduct coolant to the torch head, a second coolant line configured to conduct the coolant away from the torch head, a first welding power conductor within the first coolant line, and a second welding power conductor within the second coolant line, the first and second welding power conductors configured to carry electric current to the torch head.

The invention discloses gas metal arc welding equipment and an arcing method.The equipment comprises a welding gun, a welding power source and a shielding gas device, the welding power source and the shielding gas device are connected with the welding gun, the welding gun is connected with a wire disc through a servo wire feeder, and the welding power source comprises a main power source and an auxiliary power source. The double-power-supply structure of the auxiliary power supply and the main power supply is adopted, the auxiliary power supply is used for outputting arc striking current, small and stable electric arcs are formed in cooperation with wire drawing separation of the servo wire feeder after welding wires make contact with a welding product, the effects that arcing is stable, the welding wires are not melted or melted and not exploded can be achieved, arc breaking is avoided, the arc striking success rate is high, and the production efficiency is high. And after the electric arc is stable, the main power supply outputs the welding current to carry out normal set welding, so that the welding arc-starting splashing in a conventional large current impact arc-starting mode can be effectively avoided, the arc-starting success rate is improved, and the welding quality is improved.

The invention discloses an ultra-low splashing robot welding system and method based on intelligent waveform control, and relates to the technical field of robot welding, and the method comprises the following steps: collecting historical welding data, extracting steady state molten pool characteristic parameters, and constructing an associated database; establishing a three-dimensional coordinate system, and setting and verifying a molten pool monitoring area; molten pool images and temperature field distribution are collected in real time, dynamic molten pool characteristic parameters are extracted, the deviation degree between the dynamic molten pool characteristic parameters and steady-state characteristics is calculated, and whether waveform adjustment is triggered or not is judged by combining arc signals; a reference waveform parameter is called according to the current working condition, the waveform adjustment amount is output through a neural network, an intelligent welding waveform instruction is generated, and a welding power source and a robot are controlled to move through a real-time communication link; and monitoring the state and the splashing amount of the molten pool after adjustment, evaluating the splashing inhibition rate, and optimizing the system. Intelligent closed-loop control in the welding process is achieved, splashing is remarkably reduced, the welding stability and quality are improved, and the method is suitable for various automatic welding scenes.

A wheeled, height-adjustable welding robot, characterized in that it comprises: a wheeled chassis comprising a traveling frame and a wheel assembly disposed at the bottom of the traveling frame and rotatably connected to the traveling frame; a support arrangement arranged below the chassis and telescopically connected thereto for exerting a supporting force on the wheeled chassis when it is stationary; a height-adjustable welding robot assembly comprising a lifting mechanism fixedly connected to the upper end surface of the traveling frame, a robot lifting platform vertically displaceably connected to the lifting mechanism, and a welding robot assembly fixedly arranged above the robot lifting platform; a welding power supply arrangement arranged above the traveling frame.

The invention relates to a multi-modal sensing fusion-based automatic correction method and system for a welding robot body, the system comprises a three-level distributed architecture of a sensing layer, an edge layer and a control layer, the sensing layer is integrated with a millimeter wave radar, a camera, a six-dimensional force / torque sensor, a welding power supply data acquisition module and an acoustic emission sensor, and multi-modal data acquisition is realized; the edge layer runs a fusion algorithm through an embedded AI computing platform carrying a GPU to complete data processing and decision making; and the control layer receives the deviation correction instruction to drive the robot to execute motion correction. The method comprises the steps of multi-modal data real-time acquisition and synchronization, data preprocessing and feature extraction, multi-source information fusion and decision making, and real-time control and execution. The problems of single sensing dimension, response delay, weak anti-interference capability and the like in the prior art are solved, the robustness, the real-time performance and the deviation correction precision of the system are improved, full-automatic intelligent welding is realized, and the method is suitable for high-precision scenes such as shipbuilding and pressure vessel welding.

The invention discloses a split type gas shielded welding machine, and relates to the technical field of welding machines, the split type gas shielded welding machine comprises a bottom plate, a welding power source is arranged on the top of the bottom plate close to the edge of one side, one end of the welding power source is coupled with an equipment welding gun through a wire, and a gas tank used for conveying shielding gas to the welding gun is arranged on the top of the bottom plate close to the center. When the ship body welding device is used and before a ship body is welded, due to the fact that many impurities and metal particles exist on the surface of the ship body, in the welding process, firstly, the impurities on the surface of the ship body are cleaned through rotation of cleaning equipment, meanwhile, the surface of the ship body is heated through an infrared heating pipe, the follow-up ship body welding quality is improved, and meanwhile, the welding efficiency is improved. The two negative pressure pumps are started, negative pressure is generated in the dust collection bin, cleaned impurities are collected into the dust collection bin under the action of pressure difference to be collected, and through the action of the pretreatment assembly, the split type gas shielded welding machine integrates pretreatment, cleaning and welding.

A welding wire feeder includes a welding wire feed drive configured to drive welding wire towards a welding application, wire feed control circuitry coupled to and configured to control the welding wire feed drive. The welding wire feeder includes power conversion circuitry configured to receive polarized input power from a welding power source via input connections with defined polarities and to convert the polarized input power to welding output, sensing circuitry configured to detect the polarity of the polarized input power when connected to the input connections, and welding process control circuitry. The welding process control circuitry is coupled to the power conversion circuitry and the sensing circuitry. The welding process control circuitry is configured to provide the polarized input power to the power conversion circuitry only if the polarity of the polarized input power corresponds to the defined polarities of the input connections.

The utility model belongs to the technical field of welding power supply interface circuits, and particularly discloses a pulse interface circuit between a PLC (Programmable Logic Controller) and a TIG (Tungsten Inert Gas) welding power supply, which is characterized in that a pin 1 of an analog switch chip accesses a peak welding current input signal through a terminal 3 of a wiring terminal; a pin 5 of the analog switch chip is connected to a base value welding current input signal through a terminal 4 of the wiring terminal, a pin 10 of the analog switch chip is connected to a pulse width modulation signal through a terminal 1 of the wiring terminal, a pin 3 of the analog switch chip is electrically connected with one end of a voltage-regulator tube D4, and the other end of the voltage-regulator tube D4 is connected to a negative electrode of the power supply. According to the utility model, a pulse interface circuit is formed through the connection relation among the analog switch chip, the voltage-regulator tube, the resistor, the capacitor and the wiring terminal, so that a pulse width modulation signal PWM and an analog quantity signal of the PLC controller are converted into a pulse signal of a TIG welding power supply.

The utility model relates to a mobile liftable robot. The welding robot comprises a trolley body, the top of the trolley body is connected with a welding power source, a cooling water tank, a wire feeder, a gas storage tank, a control cabinet and a liftable stand column, the top of the stand column is connected with a robot body through a fixing mechanism, the fixing mechanism comprises a mounting plate and a mounting base, and the mounting plate is connected with the telescopic end of the stand column; a mounting plate is arranged on the mounting base, a plurality of first mounting holes are formed in the mounting plate, the mounting base is in a circular truncated cone shape, the lower bottom surface of the mounting base is connected with the mounting plate, the upper bottom surface of the mounting base is connected with a robot body, a plurality of receding grooves are formed in the side surface of the mounting base, and vertically downward second mounting holes are formed in the inner walls of the receding grooves. According to the welding robot, the stroke in the Z direction can be expanded, and compared with a conventional welding robot with a fixed base, the welding range can be greatly enlarged, so that auxiliary mechanisms such as large external shafts do not need to be manufactured.

The utility model belongs to the field of pipeline welding, and particularly discloses an efficient welding system for single-side welding and double-side forming of a subsea pipeline, which comprises bottom sealing and hot welding equipment, filling and capping welding equipment and a rigid track, the bottom sealing and hot welding equipment comprises a first welding unit, the first welding unit comprises a CMT welding power source and a single-torch welding trolley, and a CMT welding gun electrically connected with the CMT welding power source is fixedly connected to the single-torch welding trolley; the rigid track is detachably mounted on the subsea pipeline, and the single-torch welding trolley is detachably mounted on the rigid track when the subsea pipeline is welded; and the filling and capping welding equipment is used for welding the subsea pipeline subjected to bottom sealing and hot welding. By means of the method, the single-face welding and double-face forming effect under the gapless assembly can be achieved under the condition that copper liners are not adopted for bottom sealing and hot welding, meanwhile, the filling efficiency is high during filling and cosmetic welding, the welding efficiency can be improved, and meanwhile the method is suitable for welding of a whole series of subsea pipelines such as common carbon steel, acid pipes and composite pipes.

The invention discloses a welding power supply extension module integrating arc voltage tracking and welding machine control functions and a welding control method, and belongs to the technical field of electric arc welding. In order to solve the problems that arc voltage tracking and welding machine control are mutually independent and cannot cooperate in real time in the existing TIG welding process, so that the welding process is tedious in operation and unstable in quality, the system comprises a core processor for executing an arc voltage tracking control algorithm and a welding parameter adjusting algorithm; the signal conditioning circuit is used for collecting and conditioning a current signal and a voltage signal output by the welding power supply; the welding power supply control module is provided with a plurality of interface circuits used for being connected with welding power supplies of different interface types; the core processor receives state information of the welding process through the high-speed communication module and generates a first control instruction used for adjusting output parameters of a welding power source and a second control instruction used for adjusting the height of a welding gun according to the state information and current signals and voltage signals collected by the signal conditioning circuit. The method is used for electric arc welding.

The welding power source host comprises a power source box, an air inlet and an air outlet are fixedly connected to the two sides of the power source box correspondingly, mounting grooves are formed in one side of the air inlet and one side of the air outlet, and four sets of first hydraulic rods and first springs are fixedly connected into the mounting grooves; first positioning plates are fixedly connected to the other ends of the first hydraulic rods and the first springs, rotating doors are rotatably connected to the two sides of one ends of the air inlet and the air outlet, two sets of second hydraulic rods and second springs are fixedly connected to one sides of the rotating doors, and second positioning plates are fixedly connected to the other ends of the second hydraulic rods and the second springs; and a mounting plate is arranged in the mounting groove in a sleeved mode, and a filter plate is fixedly connected to the middle of the mounting plate, so that disassembly and assembly of the heat dissipation filter device can be facilitated, and noise generated by the filter device under air circulation can be reduced.

The invention discloses an infrared induction feedback type permanent magnet magnetic field auxiliary TIG (Tungsten Inert Gas) welding device and a working method thereof, and the device comprises a TIG welding gun arranged above a workpiece, a welding power supply connected with a tungsten electrode in the TIG welding gun, a permanent magnet group arranged above the workpiece, and a magnet driving mechanism for driving the permanent magnet group, the infrared temperature detector is arranged on the side surface of the workpiece; the driving permanent magnet set and the infrared temperature detector are both connected with the control system, the infrared temperature detector detects the arc temperature distribution condition in real time and feeds back the detected arc temperature to the control system, and the control system compares the arc temperature with a preset threshold value and sends a control signal to the magnet driving mechanism according to the comparison result. The magnet driving mechanism adjusts the distance between the two permanent magnets in the permanent magnet group and the electric arc based on the control signal, and dynamic adjustment of the magnetic field intensity is achieved. According to the invention, the size of the magnetic field can be flexibly changed, and high energy consumption and electromagnetic interference of the electromagnetic coil can be avoided.

The invention discloses a double-tungsten-electrode arc welding system and method based on high-frequency controllable square waves, and belongs to the technical field of mechanical engineering and welding. The system comprises a high-frequency waveform editing module I and a high-frequency waveform editing module II which are connected with a TIG welding power source and a double-tungsten-electrode welding gun correspondingly, and electric arc cooperative control is achieved by independently regulating and controlling current waveforms. The method comprises the steps of surface pretreatment, current parameter configuration, switching of a high-frequency square wave mode after short-circuit arcing, and real-time monitoring of molten pool morphology optimization parameters. The method breaks through the limitation that traditional TIG welding is low in deposition efficiency and high in arc pressure, the arcs are contracted through the high-frequency pulse magnetic field, double-arc independent regulation and control and heat input optimization are achieved, the method is suitable for thin plate high-speed welding and thick plate large-current welding, and the problems of pits and undercut defects are solved. The method has the functions of waveform real-time editing and closed-loop feedback regulation and control, shows excellent process adaptability in the fields of aerospace, nuclear power and the like, and provides a novel welding path for precision manufacturing.

The invention discloses a short-circuit gas metal arc welding current waveform control method and system, a medium and a product, and belongs to the technical field of welding. The method comprises the steps that a current signal and a voltage signal in a welding loop are obtained in real time; calculating a loop inductance value according to the current signal and the voltage signal; the loop inductance value is compared with a first preset threshold value and a second preset threshold value, an inductance compensation strategy is dynamically generated, and preset welding current waveform parameters are adjusted according to the inductance compensation strategy; and the welding power source outputs a welding current waveform matched with the adjusted welding current waveform parameter, and the arc stability is improved by controlling molten drop stable transition. According to the method, the problems that in the welding process in the prior art, parameter matching is difficult, dynamic compensation is insufficient, and the technology applicability is poor are solved, and the molten drop transition consistency and the electric arc stability in the welding process are improved.

A submerged arc welding system includes a welding power supply, a welding wire feeder, a control unit for the welding power supply and the welding wire feeder, and a voltage sensor to detect voltage between the tip of the welding wire and a workpiece. Under the control of the control unit, the wire feeder feeds the welding wire at an initial feed speed at start of welding. Further, when the tip of the welding wire shorts to the workpiece, the wire feeder stops the feeding of the welding, and the welding power supply starts outputting welding current. Further, when a detection voltage detected by the voltage sensor reaches or exceeds a voltage threshold, the wire feeder starts feeding the welding wire at a welding feed speed for welding.

The invention discloses a welding seam automatic identification and self-adaptive welding system and method.The welding seam automatic identification and self-adaptive welding system comprises a movable fixing frame, a welding positioner, a welding robot and a central control unit, and a global wide-area 3D scanner is arranged on the movable fixing frame and used for obtaining the overall point cloud of a workpiece; a structured light vision sensor is arranged on the welding robot and is used for finely scanning a welding seam area; the central control unit is in communication connection with the global wide-area 3D scanner, the welding robot, the structured light vision sensor and the welding power source and used for scheduling the sequence of global scanning and local fine scanning. According to the method, a multi-stage collaborative visual sensing framework of global coarse positioning and local fine recognition is adopted, the contradiction between a large range and high precision is solved, meanwhile, dynamic matching of welding parameters and equipment movement is achieved through finite element simulation and real-time monitoring data closed loop, and full-process automatic quality control is achieved in large weldments for the first time.

The utility model discloses ultrasonic shot peening composite MIG welding equipment, which relates to the technical field of welding and comprises a protective gas cylinder, a wire feeder, an MIG welding power supply, an integrated equipment upper computer, an ultrasonic power supply, an ultrasonic power supply integrated cabinet and a main body frame, a working table surface horizontal movement module, a three-dimensional movement module for driving the bearing overhanging arm to move, a movement module controller and an ultrasonic shot blasting component are arranged on the main body frame, and a welding gun clamp and a structured light sensor are fixedly arranged on the bearing overhanging arm. A molten pool is regulated and controlled through synchronous ultrasonic shot peening in the welding process, ultrasonic vibration in a molten pool area remarkably refines a solidification structure through the cavitation effect and the acoustic streaming effect, dendritic segregation is restrained, residual welding tensile stress can be effectively released through ultrasonic shot peening treatment loaded instantly after welding, and pressure stress is introduced; the effects of surface strengthening treatment and welding deformation improvement are achieved, and integrated regulation and control of the welding process and post-welding joint strengthening treatment are achieved.

The invention discloses an automatic distribution method and system for welding equipment, a main controller is respectively connected with an input unit, a power distribution controller, an output unit, a communication unit and an air valve controller, and the method comprises the following steps: in response to a received station closing signal sent by the input unit, extracting a corresponding station number and a channel number; the connection state of each welding power supply is retrieved in sequence, and when the unused welding power supply is retrieved, the power supply serial number and the station number are sent to the power supply distribution controller for electrical connection; forwarding the channel number to a welding power supply through a communication unit; the station number is sent to an air valve controller, and an air valve is opened; sending the station number to an output unit and starting a power supply; and in response to a received welding ending signal sent by the welding power supply, ending the process. The connectivity of the welding power sources and the station welding torches is controlled through the automatic distribution controller, the use efficiency of the stations on the power sources can be effectively distributed, the number of the power sources is smaller than the number of the stations, and the investment of a user on welding equipment is reduced.

The invention provides an automatic welding device and method for annular workpieces, and belongs to the technical field of welding. The device comprises a workpiece fixing part, a rotating table, a driving motor, a rotating assembly, a welding power source and a welding gun; the workpiece fixing part is used for fixing a to-be-machined workpiece; the rotating table and the fixed workpiece are coaxially arranged, and the common axis is a first axis; the welding gun is fixed on the rotating table; positive and negative electrodes of the welding power supply are respectively connected with the welding gun and the workpiece fixing part; the rotating table is connected with the driving motor or the rotating assembly; the driving motor is in transmission connection with the rotating assembly; the rotating table and the welding gun rotate around the first axis under the transmission action of the driving motor and the rotating assembly. The welding gun is arranged on the rotating table, the driving motor drives the rotating table to rotate through the rotating assembly, automatic welding of the welding gun around the fixed annular workpiece is achieved, the welding quality is uniform and stable, the standard reaching rate of the welded workpiece is high, and unstable welding quality caused by manual operation is avoided.

An example welding torch includes: a handle piece that is electrically and mechanically connected to the torch head on a first end of the handle piece; a power supply connector configured to be coupled to a welding power supply on a first end of the power supply connector, wherein at least one of the handle piece or the power supply connector are a single piece; a welding cable that is electrically and mechanically connected to both a second end of the handle and a second end of the power supply connector; a first cover over the torch head, the handle piece, and a first portion of the welding cable connected to the handle piece; and a second cover over the power supply connector and a second portion of the welding cable connected to the power supply connector.

To provide a welding system installable by spacing a welding robot and a control device thereof apart from each other.SOLUTION: A welding system 1 comprises: a welding robot 100; a control device 400 that generates a control signal for controlling the welding robot 100; a connection device 500 separate from the welding robot 100; a welding power source 300; a wire feeder 200 that is connected to the welding power source 300 and that supplies welding power for welding to the welding robot 100; a first cable CC01 connected at one end to the control device 400 and at the other end to the connection device 500; and a second cable CC02 connected at one end to the connection device 500 and at the other end to the welding robot 100.SELECTED DRAWING: Figure 1

This invention discloses a variable-wave arc welding power supply control method, arc welding equipment, control device, and storage medium. Applied to an arc welding equipment, the equipment includes a coordination control module and at least two power conversion modules. The coordination control module is connected to the controlled terminals of each power conversion module to control the switching of the power conversion modules to form and output pulse power. The output terminals of each power conversion module are connected in parallel to superimpose the electrical energy of the arc welding power supply. The variable-wave arc welding power supply control method includes: the coordination control module outputting its corresponding control commands to each power conversion module; and each power conversion module adjusting the pulse width and on / off timing of the pulse power according to the control commands to increase the power or voltage amplitude of the arc welding power supply. This design optimizes the output waveform of the welding power supply, enabling it to provide excellent dynamic characteristics and improve welding performance.

The disclosed technology generally relates to welding technology, and more particularly to an electrode assembly for arc welding (e.g., submerged arc welding). In one aspect, a welding system includes a welding power source and an electrode assembly operably coupled to the welding power source and an electrode. The welding power source is configured to apply a direct current electrode negative (DCEN) to the electrode using the electrode assembly to establish an arc between the electrode and the workpiece, and to apply a direct current electrode positive (DCEP) or alternating current (AC) to the electrode after establishing the arc.

This invention provides a welding power supply system that automates the initial operation of submerged arc welding and suppresses the introduction of impurities into the weld bead after welding. The welding system (A1) for submerged arc welding includes: a welding power supply device (2) having an inverter circuit (25) and providing power; a wire feed device (5) for feeding welding wire; and a control device (1) for controlling the welding power supply device (2) and the wire feed device (5). The control device (1) feeds the welding wire in the forward direction via the wire feed device (5) at the start of welding. When the tip of the welding wire contacts the workpiece (W), the welding power supply device (2) outputs an initial current. From the contact of the welding wire until the start of forward feeding at a first welding speed, a second forward feeding speed slower than the first speed is provided as the initial current.

The invention provides a spot welding machine workbench which comprises a workbench body, and a positioning frame is arranged on the workbench body. The fixed sliding plate assembly comprises a hanging plate, and the fixed sliding plate assembly is connected with the positioning frame through the hanging plate; the sliding block assembly is connected with the fixed sliding plate assembly, and the sliding block assembly and the fixed sliding plate assembly move relatively; the air cylinder is arranged on the fixed sliding plate assembly and used for pressurizing the machined part; the welding gun is arranged on the sliding block assembly, is provided with a button for controlling a power switch, and is used for independently controlling the welding electrification of the machined workpiece; the control pedal is connected with the air cylinder and used for controlling the air cylinder to pressurize. Pressurizing and a power switch of the electric welding machine are separately controlled, the air cylinder is used for pressurizing, the power switch is a power-on button on a welding gun, and the problems that a spot welding machine is poor in applicability, spark discharge ablation is caused, welding spots are not firm, the appearance is uneven and has burrs, thin weldments are prone to breakdown, the operation requirement is high, and the work efficiency is not high are solved.

The utility model discloses a lamp bead wiring protection structure, which belongs to the technical field of lamp bead wiring, and comprises a lamp bead, power lines and a protection sleeve, two wiring pins extend from the lamp bead, the two wiring pins are respectively welded with the power lines, a built-in cavity and two sleeve holes are integrally arranged on the protection sleeve, colloid is placed in the built-in cavity and / or the two sleeve holes, and the power lines are connected with the built-in cavity and the two sleeve holes. And the welding part of the wiring pin and the power line is sleeved in the built-in cavity and / or the two sleeve holes and is bonded and fixed by the colloid. According to the structure, the placing stability of the colloid can be improved, meanwhile, the placing amount of the colloid can be limited, the wiring stability of the lamp bead can be improved, in addition, due to the fact that the built-in cavity and the two sleeve holes are integrally formed, workers can conveniently place the colloid, and the working efficiency is improved. And meanwhile, the whole assembling process can be completed only by positioning and sleeving one protective sleeve on the lamp beads and the power line, so that the production cost can be reduced, the assembling convenience can be improved, and the practicability is high.

An example welding-type system includes a welding-type power source configured to provide power in the welding-type system, and a welding-type wire feeder configured to feed electrode wire during welding-type operations. The welding-type power source and the welding-type wire feeder form a feeder power circuit that may further include one or more welding-type cables. The welding-type power source is configured to obtain initial event data relating to an initial attachment event, and generate, based on the initial event data, an initial estimate for Cable Length Compensation (CLC) in a weld circuit that includes the welding-type power source and the welding-type wire feeder. The initial attachment event may include closing the feeder power circuit in a powered-up state or powering on the welding-type system when the feeder power circuit is already closed. The initial event data includes duration and one or both of voltage and current of the initial attachment event.