Change--Over Of Operating Modes - Bosch PSU 5000 Series Instructions For Assembly And Operation Manual

Operating
modes
6.3 Change- -over of operating modes
6--4
PSU 5000 / PSG 3000
Instructions for Assembly and Operation
WARNING!
Possible danger of injury and/or damage to property through unauthorized
!

change--over of operating modes!

The right to interfere with the timer compenents is reserved to the BOSCH service
department or to repair/maintenance units authorized by BOSCH!
If the operating mode is to be changed over, the system must be switched off be-
forehand! In any case, insulated tools must be used!
WARNING!
Danger of life through electrical voltage!
!
When the system is switched off, the inverter inside is not immediately de--energi-
zed! De--energization is performed slowly.
Therefore, you should switch off the system and wait for at least 5 minutes before
you can open the inverter housing.
` To change over from primary current control to secondary current control,
change the jumper position on terminal post X1007.
Primary current control: the secondary welding current is controlled via the
measured primary current and the transformer ratio programmed with the
BOS--5000 software.
` To change over from current control mode (state as delivered) to pulse width
mode (special mode), change the jumper position on terminal post X1006.
` To disable diode monitoring, change the jumper position on terminal post
X1008.
` To disable the measuring loop test, change the jumper position on terminal post
X1015.
` To change over from KSR to heat control, set switch S5 accordingly. Potentiom-
eter R1 is used to adjust the electrode voltage.
` The ramp time constant is set with switch S3 (refer to section 9.7).
S3/1 in position ON: ramp default setting
S3/2 to S3/4 in position ON: increases the ramp's time constant
With a secondary line length > 5 m, S3/1, S3/3 and S3/4 should be set to OFF and
S3/2 to ON in order to avoid current overshoot and possible faults (seven--segment
display: 7) when the inverter current limit is reached.
1070 078 224- -109