Structure; Fig. 6:General Structure Of An Mf Welding System With Psi 6Xxx - Bosch Rexroth PSI 6 Series Operating Instructions Manual

274 / 460 Bosch Rexroth AG
Information on this product
5.2.3

Structure

Mains
PSI 6xxx
Transformer
MF welding
transformer
(PSG)
Primary circuit

Fig. 6:General structure of an MF welding system with PSI 6xxx

The power unit is permanently installed in the left part of the housing,
the timer module in the right side of the housing.
The power unit is always provided with connections for
• mains supply,
• welding transformer and
• cooling water (only for types with water cooling).
The timer module includes display and operating elements in addition
to all connections/modules for coupling the PSI 6xxx to the higher level
PLC/robot unit and to the programming terminal.
imer module
T
•
•
U1
V1
•
W1
•
For details, please refer to page 276 et seq.
Power unit:
•
•
*)
: Options for welding current measurement:
•
•
•
U2
V2
to constant-current
regulation (KSR)
Secondary circuit
The dimensions of the unit's housing and the functional units for coo­
ling depend on the size of the integrated power unit, therefore, they
may differ from the example shown in the figure above.
PSI 6xxx |
:
Communication with robot/PLC
Communication with programming device (BOS)
via RS232 or USB (depending on type)
Communication with programming device (BOS)
via field bus (optional)
Inclusion of various additional modules
Generating the %I
Controlling the medium-frequency welding
transformer
Current sensor in the secondary circuit of the PSG
Separate secondary circuit current sensor
Current sensor in the primary circuit of the PSI
(necessary for the optio­
nal UI regulation)
*)
Current sensor
Electrodes
1070080028 / 08
Voltage tapping