I/O Field Supply - Bosch Rexroth PST 6 Serie Betriebsanleitung

1070087088 / 08 | PST 6xxEx
7.2.4

I/O field supply

Connection:
Cable length:
Cable type:
Power infeed for the I/O field.
X1S1
1
2
3
4
5
6
X1S2
1
2
Fig. 50: I/O field supply input
You should ensure that the proper functioning of the stop circuit is gua­
"
ranteed!
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
field must be set to LOW level. For this purpose, an external monitoring
device must open the floating contact and thus interrupt power supply
(X1S1, pin 1 and 2).
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‐Voltage Di­
rective (2006/95/EC).
If potential separation is necessary between the I/O field and the timer,
"
the timer and the I/O field must be operated via different 24 V
supply units!
Bosch Rexroth AG
to X1S1; STKK, grid 3.5 mm, 6‐pole,
2
max. 1.5 mm .
Mating connector is comprised in the delivery.
(from power source to consumer)
2
max. 10 m at 0.75 mm
2
max. 75 m at 1.5 mm
unshielded, VDE 0281, 0812 (e.g. Ölflex)
Stop circuit
24 V DC
floating contact
Load: 24 V , max.
DC
4 A
refer to page 327 and 328
319 / 416
Assembly
power supply unit
24 V
DC
0V
power
DC