368 / 460
Bosch Rexroth AG
Assembly
7.2.9
24 V
voltage distribution (X4)
DC
You should ensure that the proper functioning of the stop circuit is
"
always guaranteed!
In the event of dangerous conditions at the welding system or the in
tentional switch-off of the weld timer, the inputs and outputs of the
I/O array must be set to LOW level. For this purpose, an external
monitoring device must open the floating contact and thus interrupt
the power supply of the I/O module.
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.
"
In master slave operation:
Ensure that the stop circuit is interrupted even in case of a slave fai-
lure.
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).
If potential separation is necessary between the I/O array and the
"
timer, the timer and the I/O module must be operated at different
24 V
power supply units!
DC
"
The incoming power supply at the I/O module may, if necessary, also
be transmitted to additional units (at the module by internal bridging
at X10).
Please make sure in such cases, that the maximum current load (vol
tage source, connections) and cable lengths are not exceeded!
Connection:
to X4; STKK, grid 3.5 mm, 14-pole,
max. 1.5 mm
Mating connector is comprised in the delivery.
Cable length:
(from power source to the consumer)
max. 10 m at 0.75 mm
max. 75 m at 1.5 mm
Cable type:
unshielded, VDE 0281, 0812 (e.g.: Ölflex)
The internal circuitry connected to X4 ensures easier wiring of the
24 V
supply branches. Different supply options can be implemented
DC
by inserting or removing a few jumpers without modifying the other wi
ring in the switch cabinet.
For this purpose, the relevant power source is connected to X4/6
(24 V
) and X4/7 (0 V).
DC
4 possible options are described below. The option to be selected
depends on the requirements of your application.
"
For master slave operation, please also refer to section 13.3 starting
on page 420.
PSI 6xxx |
1070080028 / 08
2
.
2
2