- Synchronous drive for silicon controlled rectifiers with phase cut off current regulation.

   - Regulation speed within 2 cycles for the first welding spot and then within ½ cycle.

   - Six different modes of current regulation are available:

• Duty fixed percentage D‰
• Duty percentage with primary voltage compensation, V‰
• Constant Current IK • Constant Power PK
• Constant Energy EK
• Adaptive AD

   - Single phase transformer drive capability.

   - Welding current set by external voltage reference 0-10V.

   - Gain adjustable current regulation loop.

   - Cycle management of spot welding machines or rollers welding machines set by user.

   - Welding time control resolution is ½ period.

   - Display of RMS welding current and of the first period positive and negative half wave.

   - Electrical insulation of input and output sections.

   - Setup and execution of 64 programs, called by external input, internal, sequential or associated with the start cycle IC1 or IC2.

   - Point to point serial communication line RS232, used to connect a printer or a personal computer or a network serial communication line RS485.

   - Availability of expansion of communication:

• Profibus
• DeviceNet
• CANopen
• Modbus/RTU
• Profinet/IO
• EtherNet/IP
• EtherCAT
• Modbus/TCP.

   - Start cycle with dual push buttons (dual input) or pedals (single input).

   - Monitoring (Quality Control) of the limits of the welding current in spot-weld and in rolls weld mode.

   - Programmable function of continuous current increment to compensate electrodes wears under variable curve up to four pairs of electrodes (four transformers).

   - Welds counter with alarm and lock function.

   - Four solenoid valves flexibly associated to pre-squeeze and squeeze within programs.

   - Proportional valve driving circuit galvanic insulated.

   - Proportional valve full scale setting (99%) from 5 to 10V.

   - Forging solenoid-valve output.

   - Pre-stroke solenoid -valve.

   - Possible association of pressure in pre-squeeze, squeeze, preheat, welding and forging, through the proportional valve (pressure cycle).

   - Calibration of 4 transformer or welding systems.

   - Four language setting, additional languages on request.

   - Dedicated signals management by PLC.

   - Automatic line frequency recognition.

   - Possibility of external 24V power supply in case of lack of power line.

   - Automatic checking and errors reports on Rogowski coil insulated or in short.

   - Check with any reporting / management start welding pliers not closed.

   - Graphs trends of weld parameter on the terminal panel.

   - Automatic duplication of the welding program in multiple programs.