CS-I User and Maintenance, R.2.8 ENG
Safco Systems Ltd-Via Isonzo 17/b-20090 Cesano Boscone-Milan-Italy
tel. +39 024504433 Fax +39 024504321 E-mail:info@safcosys.it Web site: www.safcosys.it
11 of 109
2.2. Main features
¾ Power unit mid-frequency inverter impressed current technology using IGBT Programmable
via terminal or via remote field bus.
¾ Frequency set by the user from 1000 to 7000Hz for use with DC Transformers
¾ User selectable primary or secondary current measurement.
¾ 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
¾ Possibility of setting of welding current from external voltage reference 0-10V
¾ Gain adjustable current regulation loop.
¾ Cycle management of spot welding machines or seam welding machines set by user.
¾ Time management in Cycles or in milliseconds.
¾ Electrical insulation of input and output sections.
¾ Setting up and executing 64 programs, called from external input, internal, sequential or
combined in the early cycle IC1 or IC2 or recalled from the Fieldbus if any.
¾ Point to point serial communication line RS232, used to connect a printer or a personal
computer or a network serial communication line RS485.
¾ Availability of expansion of communication: Profibus – DeviceNet – CANopen -
Modbus/RTU - Profinet/IO - EtherNet/IP – Modbus/TCP.
¾ Start cycle with dual push buttons (dual input) or pedals (single input).
¾ Monitoring (Quality Control) of the limits of the welding current in spot-weld and in seam
weld mode.
¾ Programmable function of continuous current increment to compensate electrodes wears
under variable curve up to four pairs of electrodes (four transformers).
¾ Welds counter with alarm and lock function.
¾ Four solenoid valves flexibly associated to pre-squeeze and squeeze within programs.
¾ Proportional valve driving circuit galvanic insulated.
¾ Proportional valve full scale setting (99%) from 5 to 10V
¾ Forging solenoid-valve output.
¾ Pre-stroke solenoid -valve.
¾ Possible association of pressure in pre-squeeze, squeeze, preheat, welding and forging,
through the proportional valve (pressure cycle).
¾ Self-calibration of 4 transformer or welding systems.
¾ Four language setting, additional languages on request.
¾ Dedicated signals management by PLC.
¾ IGBT power unit with water cooling, through integrated water control solenoid valve.
¾ Possibility of external 24V power supply in case of lack of power line.
¾ Temperature monitoring of heat sink.
¾ External temperature monitoring (transformer diode or coils).
¾ Automatic checking and errors reports on Rogowski coil insulated
¾ Check with any reporting / management start welding pliers not closed.
¾ Graphs trends of weld parameter on the terminal panel.
¾ Automatic duplication of the welding program in multiple programs
¾ Management via can bus of linear measurements of displacement and electrode
verification, management or pressure welding force through proportional valve or load cell
with feed-back
To Next Page
Loading...