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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:[email protected] Web site: www.safcosys.it
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2.2.
Main features
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Power unit mid-frequency inverter impressed current technology using IGBT Programmable
via terminal or via remote field bus.
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Frequency set by the user from 1000 to 7000Hz for use with DC Transformers
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User selectable primary or secondary current measurement.
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Six different modes of current regulation are available:
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Duty fixed percentage D
‰
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Duty percentage with primary voltage compensation, V
‰
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Constant Current IK
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Constant Power PK
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Constant Energy EK
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Adaptive AD
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Possibility of setting of welding current from external voltage reference 0-10V
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Gain adjustable current regulation loop.
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Cycle management of spot welding machines or seam welding machines set by user.
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Time management in Cycles or in milliseconds.
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Electrical insulation of input and output sections.
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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.
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Point to point serial communication line RS232, used to connect a printer or a personal
computer or a network serial communication line RS485.
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Availability of expansion of communication: Profibus – DeviceNet – CANopen -
Modbus/RTU - Profinet/IO - EtherNet/IP – Modbus/TCP.
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Start cycle with dual push buttons (dual input) or pedals (single input).
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Monitoring (Quality Control) of the limits of the welding current in spot-weld and in seam
weld mode
.
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Programmable function of continuous current increment to compensate electrodes wears
under variable curve up to four pairs of electrodes (four transformers).
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Welds counter with alarm and lock function.
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Four solenoid valves flexibly associated to pre-squeeze and squeeze within programs.
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Proportional valve driving circuit galvanic insulated.
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Proportional valve full scale setting (99%) from 5 to 10V
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Forging solenoid-valve output.
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Pre-stroke solenoid -valve.
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Possible association of pressure in pre-squeeze, squeeze, preheat, welding and forging,
through the proportional valve (pressure cycle).
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Self-calibration of 4 transformer or welding systems.
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Four language setting, additional languages on request.
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Dedicated signals management by PLC.
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IGBT power unit with water cooling, through integrated water control solenoid valve.
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Possibility of external 24V power supply in case of lack of power line.
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Temperature monitoring of heat sink.
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External temperature monitoring (transformer diode or coils).
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Automatic checking and errors reports on Rogowski coil insulated
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Check with any reporting / management start welding pliers not closed.
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Graphs trends of weld parameter on the terminal panel.
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Automatic duplication of the welding program in multiple programs
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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