Bosch Rexroth PSI 6100 L1 Series, Operating Instructions Manual

Page: 369 / 460

1070080028 / 08 Bosch Rexroth AG PSI 6xxx | 369 /460
Assembly
1.
The control logic and the I/O module receive power supply from the
internal 24 V
DC
voltage generator.
Used for: preferably on stand-alone systems.
Advantage: no separate power supply unit required.
Disadvantage: 24 V
DC
is only generated if line voltage is present at
the line input of the power unit.
Programming, diagnosis or I/O communication
between the timer and the PLC/robot is no longer
possible when the line voltage has been switched off
at the line input of the power unit.
2.
The I/O module receives power supply from the internal 24 V
DC
vol­
tage generator, the control logic from the external power supply unit.
Used for: networked systems.
Advantage: Programming, diagnosis and visualization are still
possible when the line voltage has been switched off
at the line input of the power unit.
Potential separation is possible between the timer
and I/O modules with discrete inputs/outputs (paral­
lel I/Os).
Disadvantage: No I/O communication between the timer and the
PLC/robot possible when the line voltage has been
switched off at the line input of the power unit.
3.
The control logic and I/O module receive power supply from a joint
external 24 V power supply unit.
Used for: preferably for networked systems.
Advantage: I/O communication between the timer and the PLC/
robot, programming, diagnosis and visualization are
still possible when the line voltage has been
switched off at the line input of the power unit.
Disadvantage: no potential separation is possible between the
timer and I/O modules.
4.
The control logic and I/O module receive power supply from sepa­
rate external
24 V power supply units.
Used for: networked systems.
Advantage: I/O communication between the timer and the PLC/
robot, programming, diagnosis and visualization are
still possible when the line voltage has been
switched off at the line input of the power unit.
Potential separation is possible between the timer
and I/O modules with discrete inputs/outputs (paral­
lel I/Os).
Disadvantage: 2 external power supply units required.
" You should ensure that the proper functioning of the stop circuit
(refer to figure below) is guaranteed by any connection option used!
In the event of dangerous conditions at the welding system or the in­
tentional switch-off of the weld timer, an external monitoring device
must open the floating contact.
If the stop circuit is open, the timer signals "Stop / No 24V". This mes­
sage is self-acknowledging, i.e. it automatically disappears when the
stop circuit is closed.
" Any external voltage sources used must be designed according to
the principles of "safety separation" in accordance with the Low-Vol­
tage Directive (2014/35/EU).
English