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IDW‑400L — Medium Frequency Inverter DC Resistance Welding Controller for Spot, Projection & Mesh Welding

IDW‑400L — Medium Frequency Inverter DC Resistance Welding Controller for Spot, Projection & Mesh Welding

IDW-400L MFDC Welding Controller | Spot, Projection, Battery Tab & Harness Welding

IDW-400L medium frequency inverter DC resistance welding controller for spot, projection, seam, battery tab, automotive harness and gantry welding. Stable current control, water cooling, RS485/Ethernet for automated welding lines.

Details

IDW‑400L — Medium Frequency Inverter DC Resistance Welding Controller for Spot, Projection & Mesh Welding

The IDW‑400L is a high-performance medium frequency inverter DC resistance welding controller engineered for precision spot welding, projection welding, seam welding and battery tab welding. It powers modern resistance spot welding machines with stable constant peak current control, multi-stage sequences and reliable water-cooled operation — the smart choice for copper wiring harness, battery pack, stainless steel and alloy production lines.

Product Parameters

Model	IDW-400L
Input Voltage	3phase AC 380V~480V±10% 50/60Hz (Option 220V/440V Available)
Output Voltage	1kHz/4kHz selectable
Duty Cycle	50%
Cooling Method	Water-cooling
Rated Capacitor	90KVA
Max Output Current	400A(Primary), 20KA(Secondary)
No. of Schedule	32, Expandable to 256 Groups
Heating Stage	3
Communication	RS-485
Control Mode	Constant Peak Current / Constant Conduction Angle
Valve Output	DC24V, ≤0.15A per channel
Solenoid Valve Output	4 standard; 10 for gantry welders; up to 17 channels
Operating Temperature	-5℃ ~ +50℃
Humidity	≤80%, non-condensing

Real-World Welding Applications

The IDW‑400L adapts to a wide range of resistance welding machines:
Copper wiring harness & braided cable — spot welding for automotive and industrial wire bundles.
Battery manufacturing — lithium battery tab joining and pack assembly.
Stainless steel & alloy parts — precision spot welding and projection welding on thin sheets and components.
Gantry & multi-gun machines — projection welding with up to 17 solenoid valve channels.
Automotive & new energy — connectors, busbars and electrical contact welding.

Why Choose the IDW‑400L

Stable weld quality — closed-loop current feedback ensures consistent nuggets over long runs.
Flexible control — multi-stage pre-press/weld/hold/off sequences fit complex joints.
Scalable I/O — up to 17 channels for multi-gun and gantry setups.
Smart integration — optional RS485/Ethernet and HMI enable data logging and remote monitoring.

FAQ

Q: Does the IDW‑400L include a welding transformer?

A: No. It is a controller only and must be paired with a medium frequency transformer; secondary welding current depends on the transformer ratio.

Q: Which machines does it suit?

A: Spot welding machines, projection welders, seam welders, gantry welders and battery tab welding equipment.