The Kemppi Master M 358 is a versatile welding equipment designed for both normal and pulsed MIG/MAG welding, with optional capabilities for TIG and MMA welding. It is designed for use with Kemppi's Flexlite GX MIG welding guns with a euro connector. For TIG welding, a dedicated Flexlite TX TIG torch with a euro connector is required, and for MMA welding, a dedicated DIX-euro adapter is needed.
Function Description:
The Master M 358 features a 4-roll wire feed mechanism, supporting a maximum wire spool diameter of 300 mm. It comes with a 2-knob 5.7" TFT/LCD control panel for easy operation. The device includes work lights with adjustable brightness (full, medium, off) powered by a built-in battery that charges when connected to the mains.
The wire feed mechanism consists of drive rolls, pressure rolls, and guide tubes (inlet, middle, outlet) for precise wire feeding. The control panel offers various views including Home, Weld Assist, Channels, WPS, Welding Parameters, Weld History, Info, WLAN, and Device Settings.
Important Technical Specifications:
The Master M 358 G model operates on a 3~50 Hz mains connection voltage of 380-460 V ±10%, using a 4 mm² HO7RN-F mains cable. The input power at rated maximum current is 14 KVA. Maximum supply current at 380-460 V is 21.3-17.1 A, and effective supply current at 220-230 V is 13.5-10.8 A. Idle state power consumption is 18 W for MIG/TIG and MMA (power save), and 119 W for MMA (fans ON). No-load voltage ranges from 55-69 V, and open circuit voltage from 53-64 V. VRD voltage is 24 V. The device uses a 16 A slow fuse.
Output at +40 °C:
- 40%: 350 A (MMA 330 A)
- 60%: 280 A
- 100% MIG: 220 A
Welding current and voltage range:
- MIG: 15 A/10 V...350 A/45 V
- TIG: 15 A/1 V...350 A/45 V
- MMA: 15 A/10 V...330 A/45 V
Voltage adjustment range for MIG is 10-40 V. Power factor at rated maximum current (@ 400 V) is 0.91, and efficiency is 87%. Operating temperature range is -20...+40 °C, and storage temperature range is -40...+60 °C. EMC class is A. Minimum short-circuit power of supply network is 2.4 MVA. The gun connection is Euro. The wire feed mechanism is 4-roll, single-motor, with a diameter of 32 mm. Filler wires supported include Fe, Ss, MC/FC, and Al, all with diameters of 0.8-1.2 mm. Wire feed speed ranges from 0.5-25 m/min. Maximum wire spool weight is 20 kg, and maximum wire spool diameter is 300 mm. Maximum shielding gas pressure is 0.5 MPa. The control panel is a built-in 5.7" LCD. Degree of protection is IP23S. External dimensions are 602 x 298 x 447 mm. Weight is 27 kg. Voltage supply for auxiliary devices is 12 V, and for the cooling unit is 24 V. Recommended minimum generator power (@ 400 V) is 20 KVA. Wired communication type is CAN. Wireless communication type is an internal wireless module (WUBT-236ACN(BT)) supporting IEEE 802.11 ac/a/b/g/n, with Bluetooth version 4.2 (LE) and operating frequencies of 2.412-2.484 GHz and 5.150-5.850 GHz. It includes a Lithium-ion battery (SAMSUNG SDI: INR18650-26J; 3.6 V; 2600 mAh or LG CHEM: ICR18650HE4; 3.6 V; 2500 mAh). Standards compliance is IEC 60974-1, -10.
The Master M Cooler cooling unit (optional) has a supply voltage of 380-460 V +/- 10%. Maximum supply current is 0.7 A. Cooling power is 1.0 kW at 1 l/min. Recommended coolant is MGP 4456 (Kemppi mixture). Maximum coolant pressure is 0.4 MPa. Tank volume is 3 l. Operating temperature range is -20...+40 °C, and storage temperature range is -40...+60 °C. EMC class is A. Degree of protection when mounted is IP23S. External dimensions are 635 x 305 x 292 mm. Weight without accessories is 14.9 kg. Standards compliance is IEC 60974-2, -10. The Master M Cooler MV (multi-voltage) supports 220-240 V +/- 10% and 380-460 V +/- 10% supply voltages, with maximum supply currents of 1.0 A and 0.7 A respectively. Other specifications are similar to the Master M Cooler.
Usage Features:
- Control Panel: The 2-knob 5.7" TFT/LCD control panel provides intuitive access to settings. The left and right control knobs offer adjustment and selection functions. Shortcut buttons are available for memory channel selection, view selection, and welding parameters view.
- Weld Assist: A wizard-like utility simplifies parameter selection by guiding the user through joint type, welding position, and plate thickness. It provides recommended welding processes, wire feed speed, gas flow rate, and travel speed.
- Memory Channels: Up to 100 channels for MIG, 10 for TIG, and 10 for MMA allow saving and recalling welding parameters. Channels can be created, saved, deleted, and linked to digital Welding Procedure Specifications (dWPS).
- Welding Programs: The device comes with preinstalled welding program work packs for 1-MIG and pulsed welding. Additional Wise features (WiseSteel, WiseFusion, WisePenetration+) and MAX processes (MAX Cool, MAX Position, MAX Speed) are optional. Manual MIG does not require additional programs.
- Trigger Logic Functions: Supports 2T, 4T, and Powerlog trigger modes. Powerlog allows switching between two or three power levels during welding, with adjustable wire feed speed, voltage/fine tuning, and dynamics for each level.
- 1-MIG: An automatic MIG/MAG process where voltage is defined automatically based on wire feed speed and welding program. It supports WiseSteel, WisePenetration+, and WiseFusion.
- WiseFusion: Enables adaptive arc length control for an optimally short and focused arc, increasing welding speed and penetration while decreasing heat input. Compatible with 1-MIG, MAX Position, and pulsed MIG.
- WisePenetration+: Maintains constant welding current by controlling wire feed speed according to stick-out length, ensuring stable penetration and preventing burn-through. It also adaptively adjusts voltage.
- WiseSteel: Modifies conventional MIG/MAG arcs for higher quality welds, reducing spatter and creating optimally-formed weld pools. It uses adaptive short arc control, fluctuates power between short arc and spray arc, and utilizes micro-pulsed welding current in the spray arc range.
- Pulse Welding: Offers higher welding speed, deposition rate, lower heat input, spatter-free globular arc, and smooth weld appearance. Excellent for aluminum and stainless steel.
- DPulse Welding: A double-pulse MIG/MAG process with two separate power levels, independently controlled.
- MAX Cool Process: A synergic MIG/MAG process optimized for root pass welds and sheet metal applications, providing a smooth arc and reduced spatter.
- MAX Position Process: A synergic MIG/MAG process optimized for vertical fillet welds (PF position), automatically switching between two power levels.
- MAX Speed Process: A synergic pulsed MIG/MAG process designed to maximize welding speed and minimize heat input, suitable for steel and stainless steel in PA and PB positions.
- Wireless Connection (WLAN): Allows connection to a local wireless network for features like WeldEye cloud service.
- Digital Welding Procedure Specification (dWPS): Supports digital WPS for observing welding parameters and linking to memory channels.
- WeldEye ArcVision: A cloud-based module for tracking welding operations, passing data to the WeldEye cloud for access via desktop computer.
- USB Backup and Restore: Allows backing up and restoring welding parameters, memory channels, and settings to/from a USB memory stick.
- USB Update: Enables firmware, welding program, process, and feature updates via a USB memory stick.
- Custom Screensaver: Users can upload and set custom images for the screensaver.
- Remote Control: Supports HR43 (1-knob) and HR40 (2-knob) remote controls for adjusting wire feed speed, welding parameters, or memory channels.
- Cable Calibration: Measures welding cable resistance using a built-in function in MIG mode.
- Water Cooling: Optional cooling unit with coolant circulation button.
- VRD (Voltage Reduction Device): Reduces open-circuit voltage for MMA welding.
- Gas Guard: Prevents welding without shielding gas.
- Weld Data View: Displays a summary of each weld, including heat input calculation when weld length is entered.
Maintenance Features:
- Daily Maintenance: Includes checking covers, components, cables, connectors, wire feed rolls, and pressure handle.
- Periodic Maintenance: Every six months, check electric connectors, clean oxidized parts, tighten loose connectors, and clean outside parts and ventilation grill.
- Service Workshops: Kemppi Service Workshops provide comprehensive maintenance, including cleanup, tool maintenance, checkups of connections, cables, and electrical components, repair of defective parts, and performance testing and calibration.
- Troubleshooting: The control panel displays error codes with titles, possible causes, and proposed actions for common issues like power-up failure, device stopping, wire feeding problems, and poor weld quality.
- Power Source Air Filter (Optional): An optional air filter can be installed and cleaned by removing it and blowing it clean with compressed air. Note that using the air filter decreases rated power levels.
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