Information On This Product - Bosch Rexroth PST 6 Serie Betriebsanleitung

1070080029 / 05 | PST 6xx0
5

Information on this product

The units of the PST 6xx0 series include by default
• weld timer (WT), and
• thyristor power unit (AC power supply unit).
Tasks of the thyristor power unit:
• generating the required %I (heat)
• controlling an alternating current welding transformer (AC trans­
former).
Tasks of the weld timer:
• Control, regulation and monitoring of all programmed welding sche­
dules
• Controlling the integrated thyristor power unit
• Communication with devices on the same process level via I/O
connection (e.g. robot, PLC, operator panel).
Purpose: integration of the product into the automation process.
• Communication with devices on a higher host level (e.g. area center,
programming terminal).
Purpose: programming, display of status/messages/errors, logging,
operation.
In addition to various timer types that can be mainly distinguished by
their I/O connection to the host PLC/robot unit and the timer functio­
nality,
different types of power units (please refer to table on page 204) with
different cooling methods (air/water) and graduated power ratings are
also available for controlling an alternating current welding transformer.
Therefore additional documents exist for each timer type which de­
scribe the type-specific weld timer functionality.
Main features
• Timer concept for alternating current welding (AC welding)
• Suitable for controlling numerous AC welding transformers
• The integrated weld timer is suitable for spot welding (e.g. in combi­
nation with a robot), projection welding, repeat welding (e.g. manual
guns), and seam welding tasks (e.g. roll seam)
• Integrated regulation and monitoring
• Separation between regulation and monitoring
• High functionality for optimization of welding quality
• Ability to switch between primary current measurement (no external
current sensor necessary in the secondary circuit) and secondary
current measurement (external current sensor in the secondary cir­
cuit necessary)
• Different cooling systems (air, water) and graduated power ratings
available.
For information on dimensioning and load, refer to Section 5.3.
• Broad variety of available I/O interfaces for communication with
PLC, robot or for connection of machine control panel
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Information on this product
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