Information On This Product; Table 8: Overview Of The Types Of Power Units - Bosch Rexroth PRC 7000 Betriebsanleitung

R911172834 / 02 | PRC7000
5

Information on this product

Table 8: Overview of the types of power units
Type
PRC 7300-L1-xxx
PRC 7300-L2-xxx
PRC 7300-W1-xxx
PRC 7300-W2-xxx
PRC 7400-L1-xxx
PRC 7400-L2-xxx
PRC 7400-W1-xxx
PRC 7400-W2-xxx
1) dependent on the welding transformer used (L1/W1 55:1; L2/W2 72:1)
Tasks of the process resistance welding control of the PRC7000 series:
• generating the required %I
• controlling a medium-frequency welding transformer (MF trans­
former, e. g. PSG)
• control, regulation and monitoring of all programmed welding sched-
ules
• Communication with devices via I/O connection (e.g. robot, PLC,
operator panel).
Purpose: integration of the product into the automation process.
• Communication with line PC and mobile devices
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 8) 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.
Cooling Mains supply
400 ...
Air Water
480V
n n
n
n n
n
n n
n
n n
n
Design
max. welding
500 ...
690V
n
n
n
n
Bosch Rexroth AG 203 / 334
Information on this product
1)
current
in kA
33
33
33
33
80
80
80
80