Information On This Product - Bosch Rexroth PSI 6 Serie Betriebsanleitung

1070080028 / 08 | PSI 6xxx
5

Information on this product

The units of the PSI 6xxx series are Class A welding equipment and in­
clude by default
• weld timer (WT), and
• medium-frequency power unit (MF inverter).
Tasks of the MF inverter:
• generating the required %I
• controlling a medium-frequency welding transformer (MF trans­
former, e. g. PSG)
Tasks of the weld timer:
• control, regulation and monitoring of all programmed welding sche­
dules
• controlling the integrated MF inverter
• 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 266) with
different cooling methods (air/water) and graduated power ratings are
also available for controlling an MF welding transformer.
Therefore additional documents exist for each timer type which de­
scribe the type-specific weld timer functionality.
Main features
• Timer concept for direct current welding (DC welding)
• Suitable for activation of numerous MF welding transformers
• The integrated weld timer is suited for spot (e.g. in connection with a
robot), projection, repeat (e.g. manual guns) and standard seam
welding tasks (e.g. roll seam).
The PSI 6xxx.190 types are especially suited for seam welding
tasks (refer to the table on page 266).
• 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 in a 1 ms cycle
• 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.
Bosch Rexroth AG 265 / 460
Information on this product