The inverter stud welding unit PRO-I 2800 with microprocessor control convinces through excellent welding quality. Modern inverter technology ensures a very precise control and a high reproducibility of the welding process as well as a very high arc stability - also in cases of short welding times and low welding currents.
The unit offers a high welding power (max. welding diameter 25 mm). Through the innovative cooling concept a high duty-cycle and thus fast welding sequences are assured. Because of the considerably lower weight compared to conventional stud welding units it is ideally suited for mobile use. An integrated electronic wide-range power supply unit allows the operation in a supply area of 320-495 V. Therefore, the PRO-I 2800 can also be used in cases of problematic power supply (e.g. with long extension cables or generators) without difficulties. The robust construction allows the use also in harsh environments.
The PRO-I 2800 is designed for stud welding with ceramic ferrule or shielding gas and short cycle stud welding with or without shielding gas. Welding current and time can be adjusted continuously, of course it is equipped with a constant current regulation. The unit is easily operated by a very robust rotating pressure switch, all functions and parameters are shown on a big display.
Pre-installed welding programmes facilitate the choice of the right adjustment values for different welding tasks. Additionally, user specific welding programmes can be stored. The modular design of the unit allows the customer specific choice of the equipment features. All optional equipment features can be retrofitted.
The welding parameter monitoring, integrated as standard in all series PRO-I stud welding units, enables a quality control of the finished welds. The unit can detect each discrepancy from the ideally permitted values. So the welding supervisor and the operator can immediately recognise deficits in the welding operation like insufficient balancing of blowout effects, tilt of the welding gun etc. Consequently, the production control can be reduced to monitoring and recording of all welds by the unit and a subsequent visual inspection. By default, the parameter sets of the last ten welds are stored. The optional available welding parameter memory allows the storage of 16000 welds and has an USB-interface for data transmission to a PC.
The PRO-I 2800 enables a very comfortable, exact and fast adjusting of stud welding gun resp. automatic welding head by displaying the values for stud protrusion and lift that are adjusted on the gun resp. the welding head in the display of the unit. The time-consuming and inaccurate manual measurement of the adjusted values at the welding gun resp. head – as it is necessary for other units – can thus be omitted.
Optionally, the unit can be equipped with a shielding gas module for welding with shielding gas for weld pool backing and with an automatic module to control the automatic stud feeder VBZ and an automatic welding gun.
The PRO-I 2800 can be supplied as multi-gun unit for the operation of two or four stud welding guns with different adjustment values for welding current and welding time. The multi-gun unit automatically detects which gun is used. All gun connections can be equipped with a shielding gas module. Alternatively, for the operation of up to four stud welding guns on one unit the external adapter box PRO-SPLIT is available as accessory.
The trolley version of the PRO-I 2800 with two big, extremely robust castors and pull-out telescopic handle is ideally suited for mobile use on construction sites.

• excellent welding quality - modern inverter technology ensures a very precise control and a high reproducibility of the welding process
• very high arc stability - also in cases of short welding times and low welding currents
• powerful - high welding current of 3150 A for max. welding diameter 25 mm
• fast welding sequences through innovative cooling concept
• ideally suited for mobile use - considerably lower weight than conventional stud welding units
• easy operation also in cases of problematic power supply (e.g. with long extension cables or generators) through integrated electronic wide-range power supply unit (supply area: 320-495 V)
• robust construction for the use in harsh environments
• low power consumption because of the high efficiency
• welding current continuously adjustable
• welding time continuously adjustable
• constant current regulation
• easy operation by a very robust rotating pressure switch
• all functions and parameters are shown on a big display (display contrast adjustable)
• library with pre-installed welding programmes (selectable via stud diameter and type)
• 59 user-specific welding programmes can be stored
• welding parameter monitoring and documentation
  • enables a quality control of the finished welds
  • The unit can detect each discrepancy from the ideally permitted values. So the welding supervisor and the operator can immediately recognise deficits in the welding operation (e.g. insufficient balancing of blowout effects, tilt of the welding gun etc.).
    -> simplified production control by monitoring of all welding parameters and subsequent visual inspection
  • features:
    • recording of welding current, welding time and voltage for each weld
    • recording of stud protrusion before the weld as well as stud travel (lift, immersion depth, immersion speed and short-circuit time) during the weld [only when a welding gun resp. an automatic welding head with travel measuring system is used]
    • comparison of the recorded welding parameters (actual values) to the parameters of a reference weld (set values) (tolerances adjustable)
    • in case of variances to the reference weld a warning is displayed or the unit is locked for further welds until the release by the operator (functionality can be switched off)
    • storage of the last ten welding parameter sets
    • optional (also retrofitable): welding parameter memory for the storage of 16000 welding parameter sets (storage with date and time) with USB-interface for data transmission (welding parameter sets) to a PC
• comfortable, exact and fast adjusting of stud welding gun resp. automatic welding head by display of the values for stud protrusion and lift that are adjusted on the gun resp. the welding head in the display of the unit [only when a welding gun resp. an automatic welding head with travel measuring system is used]
• device lock (with pin code query) to avoid unwanted parameter adjustments
• Authorization concept with different roles (password protected) for device lock as well as changes of basic settings and menu structure
• weld counter (display in main menu)
• optional (also retrofitable): shielding gas module for welding with shielding gas for weld pool backing
• shielding gas pre- and post-flow time continuously adjustable (with option shielding gas module)
• optional (also retrofitable): automatic module to connect the automatic stud feeder VBZ and an automatic welding gun
• optional (also retrofitable): two or four gun connections
  - different adjustments for welding current and welding time
  - automatic detection of used gun
  - welding programme storage for each gun connection
  - weld counter for each gun connection
  - optional (also retrofitable): shielding gas module for each gun connection
• available as accessory: adapter box PRO-SPLIT
  • enables the operation of up to four stud welding guns with different adjustment values for welding current and welding time on one unit
  • automatic detection of used gun
  • welding programme storage for each gun connection
  • weld counter for each gun connection
  • with up to four shielding gas modules
• suitable for through deck welding
• functional test without welding current for lift adjustment for welding guns and heads (lift test)
• repeat cycle lock to avoid welding on an already welded welding element
• intelligent self-diagnosis system (display of an error code in case of an interference/failure)
• automatic function test after switch-on
• temperature control as protection against destruction through excess temperature
• phase monitoring
• automatic switch-off in case of excess temperature and phase failure
• protection of the unit in case of a fault on welding/control line cable and solenoid
• protection of the electronics through air filter
• highest operational reliability and high power-on time through exclusive use of high-quality components
• all functions and parameters are controlled by a fast and high-performance microprocessor
• optional (also retrofitable): design as trolley with two big, extremely robust castors and pull-out telescopic handle for mobile use on construction sites
• lifting eyes
• two swivel castors, two fixed castors
• CAN-Bus and Anybus for safe communication with higher-level controllers
• optimized for the operation on generators
• robust, powder-coated metal housing
• stable fixing of welding cable sockets at own plug holder, prevents damage on housing caused by pulling of cable

Product data sheet PRO-I