The Kemppi KempArc Pulse 350 is a digital MIG/MAG power source for synergic work, with pulse and double pulse, made for control from a robot controller. It gives 350 A at a 60% duty cycle and 285 A at 100%, and you set the current from 10 to 350 A. The supply is 400 V with a tolerance of 15%.
What this machine is for
This is a power source for a robot cell and for an automated station that runs in batches. The synergic curves hold the parameters that were picked, and the circuit reacts to changes in the free wire stick out, so the penetration stays the same in spite of small deviations in how the robot leads the torch. A current of 285 A at a 100% duty cycle lets you work through a whole shift without breaks for cooling.
The materials named in the description are high alloy steels, aluminium and thin sheet. The pulse limits the amount of heat put in, so the distortion of thin parts is smaller, and a steady arc throws no spatter, so grinding after welding falls away. The double pulse gives a weld face close to the TIG method at MIG/MAG output, and that counts on aluminium and stainless steel, where every run shows.
The buyers are integrators of robot systems and plants moving from hand work to automation. The power source exchanges data with the robot controller in real time, so you correct the parameters from the operator panel without going down to the machine, and the whole process can be watched and recorded.
Features and equipment
- Synergic MIG/MAG welding: you pick the material, the gas and the wire diameter, the rest of the parameters the controller works out.
- Pulse: the current swings between the impulse and the base phase, the droplet comes off without a short circuit, so there is next to no spatter.
- Double pulse: a slower modulation is laid over the pulse frequency, it puts the weld face into a regular wave and drops the amount of heat put into thin sheet further.
- Reaction to a change of the free wire stick out: the circuit corrects the parameters on the fly and holds a steady penetration with small deviations in the distance of the torch from the material.
- Digital Fieldbus and Ethernet communication: you plug the power source into the robot controller with a standard interface, and the exchange of parameter data runs in real time.
- Modular build: you join the power source with a wire feeder and with the controller of the robot maker you pick, without rebuilding the station.
- Compatibility with Kemppi Wise software: optional processes for narrow gaps and thin sheet you buy separately as software keys.
- Forced cooling of the power source: a fan takes the heat from the power modules, so the machine gives 350 A also in a dusty hall and with mains voltage swings.
Technical data
| Brand | Kemppi |
|---|---|
| Type | digital MIG/MAG power source for robot systems |
| Welding current at a 60% duty cycle | 350 A |
| Welding current at a 100% duty cycle | 285 A |
| Current adjustment range | from 10 to 350 A |
| Processes | synergic MIG/MAG, pulse, double pulse |
| Supply voltage | 400 V, tolerance 15% |
| Communication | digital, Fieldbus and Ethernet |
| Cooling given on the card | air |
| Welding current given on the card | up to 400 A |
What to watch out for
The card gives a welding current up to 400 A and the source description 350 A at a 60% duty cycle, so confirm the value on the rating plate. The supply is 400 V with a tolerance of 15%, the machine needs a power socket and a circuit sized for the draw. The cooling given on the card is about a torch cooled by the shielding gas, the power source itself has forced cooling by a fan, and for longer work at high currents think about a liquid cooled torch and a separate cooler.
This is a power source to be built into a system, so to work you need a wire feeder, a torch, interconnection cables and a communication interface for the robot in question. The source description does not name the contents of the set, so ask what travels with the machine. The Wise software is an option, the keys you buy separately for the board number.
How we sell used machines
This unit was checked in our service workshop in Krotoszyn with measurements to PN-EN 60974-4 and a load test. The price includes the first year of the basic service package: an inspection with cleaning of the machine and a validation measurement. Further years can be added. We ship across the European Union, collection in person by appointment.
