Deep welding DNA — Panasonic arc welding robots, a complete lineage

TAWERS (WG4/WGH4) integrates a fully digital inverter welding power supply with a controller. WG4 contains a YA-2KD35 power supply (350A), while WGH4 is a 450A high-current type. The welding waveform is directly controlled by software, making it suitable for production lines that require high welding quality and low spatter. The G4 split type can be freely paired with external power supplies such as YD-350GZ4, YD-500GZ4, YD-400VP1, etc., according to the construction method, offering flexible configurations and independent power replacement. When selecting models, the main considerations are welding methods, current levels, and subsequent power supply upgrade requirements.

The official website discloses specifications as: TS series (TS-800/950) short-arm compact model, load capacity 8kg, arm span 841/971mm, repeatability ±0.05mm, body weight approximately 55/56kg, supports ground, ceiling, and wall-mounted installation; TM series five-level reach range 1163-2011mm, load capacity 4-6kg, repeatability ±0.08mm (TM-2000 is ±0.10mm); TL series (TL-1800/2000) long-arm type, payload 6-8kg, with a reach of 1801/1999mm. Select based on workstation space, workpiece size, and welding torch configuration; first determine the arm span, then decide on the installation method.

The official TM series page explains that welding torch cables come in three connection modes: external, built-in, and detached, allowing free selection and combination. External cables run outside the body, with high curvature, good wire feeding performance, and intuitive maintenance; Built-in (through arm) type cables pass through hollow arm shafts, reducing interference to surrounding areas, suitable for offline teaching and compact workstations; The separated type combines welding torch cables with external wire feeding tubes. The TW axis range also varies depending on the type: external type ±400°, internal/detachable type ±220°.

The TAWERS product page on the official website states that after CPU performance improvement, the controller boots in just 30 seconds and can store 40,000 teach pendants, which can be expanded to 800,000. If the older controller has tight storage, prioritize clearing redundant teaching points and using the shift function to reduce repeated teaching tasks; When expansion or multi-machine coordination is necessary (controlling up to 7 groups of mechanisms and up to 27 axes), evaluate the controller version and expansion options; it is not recommended to modify storage components yourself.

The methods disclosed on the official website include: SP-MAGII (Stacked Control), which suppresses spatter in the MAG welding short-circuit area. According to official data, spatter is reduced by up to 90% within the 150A area, suitable for thin and medium plates; MTS-CO2 (Droplet Transition Stabilization Control) reduces CO2 welding spatter by up to 75%, achieving a stable pot bottom shape penetration depth; It also features HBC thermal balance control, Zi-Tech functionality, and AWP4/S-AWP wire feeding control for aluminum. The method is configured with welding power supply and software versions. Before upgrading or modifying, verify the support of the controller and power supply model.

According to the official catalog, the LA-1800 is a medium-range multipurpose 6-axis robot with a payload of 26kg, a reach of 1801mm, and a repeatability of ±0.07mm. It supports three uses: standalone as a handling/assembly/processing robot; Collaboration with welding robots (such as loading and unloading in coordination with arc welding stations); Hybrid method—both tools and welding torches are installed simultaneously, with the same robot handling and welding. It can be paired with TAWERS (WG4/WGH4) or external welding power supplies, making it ideal for scenarios where handling and welding are combined into one workstation.

Recommended inspections: full-shaft zeroing and repeatability retest, axial noise and reducer backlash, body cable wear (especially TM internal/detachable wrist cables), encoder battery and origin data, controller version (WG4/WGH4/G4 must match power supply) and program parameter backup integrity, teach pendant emergency stop and safety loop functions, soldering power arc and waveform output status. TAWERS integrated models also need to confirm the output and load duration status of the built-in power supply YA-2KD35. Devices that cannot turn on or are parameter locked should be evaluated carefully.