Bosch Rexroth PSI 6 Serie Betriebsanleitung Seite 369

1070080028 / 08 | PSI 6xxx
The control logic and the I/O module receive power supply from the
1.
internal 24 V voltage generator.
DC
Used for: preferably on stand-alone systems.
Advantage: no separate power supply unit required.
Disadvantage: 24 V
DC
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.
The I/O module receives power supply from the internal 24 V
2.
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.
The control logic and I/O module receive power supply from a joint
3.
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.
The control logic and I/O module receive power supply from sepa­
4.
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).
Bosch Rexroth AG
is only generated if line voltage is present at
369 / 460
Assembly
vol­
DC