Description

Miller Dynasty 280DX AC/DC TIG Welder

HIGH PRECISION AC/DC TIG WELDING FOR DEMANDING APPLICATIONS

The Miller Dynasty 280DX AC/DC TIG Welder is built to deliver high-precision welding performance across a wide range of industries, including shipbuilding, manufacturing, and aerospace. This compact yet powerful unit is designed for both AC and DC TIG welding, as well as Stick processes, and provides enhanced control for exceptional results. The Dynasty 280DX incorporates advanced technology features, including Pro-Set™ controls, Auto-Line™ Power Management, and AC/DC TIG waveform adjustments, making it ideal for welders who need precision, reliability, and flexibility in a lightweight design.

Key Features:

Pro-Set™:
- Eliminates guesswork for setting weld parameters. Simply select the feature and adjust until “Pro-Set” appears on the display, providing the speed, convenience, and confidence of preset controls.
Auto-Line™ Power Management Technology:
- Allows for any input voltage hookup (208-480 V) with no manual linking, providing flexibility for various jobsite power conditions. Automatically adjusts to accommodate dirty or unreliable power.
Sleep Timer:
- Conserves electricity by powering down the machine if it remains idle for a programmable time.
Cooler Power Supply (CPS):
- Integrated 120-volt dedicated-use receptacle specifically for the Coolmate™ 1.3 cooler, ensuring the system runs efficiently when cooling is needed.
Cooler-On-Demand™:
- Operates the auxiliary cooling system only when required, reducing energy consumption and airborne contaminants.
Blue Lightning™ High-Frequency (HF) Arc Starter:
- Provides non-contact arc initiation, resulting in consistent arc starts and greater reliability compared to traditional HF arc starters.
Wind Tunnel Technology™:
- Protects internal components from airborne contaminants, extending the machine’s lifespan.
Fan-On-Demand™:
- Operates the cooling fan only when needed, reducing noise and energy use, while also minimising the intake of airborne contaminants.
AC TIG Features:
- Offers adjustable balance control and frequency settings, as well as a variety of AC waveforms (advanced squarewave, soft squarewave, sine wave, triangular wave) for optimised arc performance on aluminium and other materials.
DC TIG Features:
- Exceptionally smooth and precise arc, ideal for welding a wide range of metals, including stainless steel, copper, and titanium.
AC/DC Stick Features:
- DIG control, Hot Start™ adaptive control, AC frequency control, and Stick-Stuck detection enhance performance for both AC and DC Stick welding applications.

Technical Specifications:

Processes: TIG (GTAW), Stick (SMAW), Pulsed TIG (GTAW-P)
Input Voltage: 208 – 480 V
Welding Amp Range: TIG: 2-280 A; Stick: 5-280 A
Rated Output:
- Stick: 280 A at 31.2 V, 15% Duty Cycle (3 Phase), 160 A at 26.4 V, 100% Duty Cycle (3 Phase)
- TIG: 280 A at 21.2 V, 25% Duty Cycle (3 Phase), 200 A at 18 V, 100% Duty Cycle (3 Phase)
Max Open Circuit Voltage: 80 V DC (VRD – 11 V DC)
Dimensions: H: 346mm, W: 219mm, D: 569mm
Weight: 25 kg
Generator Requirement: 6-13 kVA depending on load.