Bosch Rexroth 4WRPEH6 3X Operating Instructions Manual page 18

18/44 Safety instructions
Category 1
ÜB2
Open
I1.1
B1
ÜB1
K1
Outputs
O1.1
B2
ÜB2
Closed
24 V
Bosch Rexroth AG, 4WRPEH6_3X, 4WRPEH10_3X, 4WRPE6_3X, 4WRPE10_3X, 4WRLE_4X; RE 29118-B/09.2021
2.7.7 Connection example/block diagram for IO-Link valves
For category 1, the supply voltage of valve pin 2 and 5 must be safely switched off.
In this example, this is realized by means of safe limit switches at doors in
connection with a safe IO-Link terminal.
The voltage can also be safely switched off via an IO-Link-Master for safe shut-off of
the B voltage according to 13849-1.
ÜB1
IO-Link
terminal with
K3
safe separation
of power supply
from bus
I1.2
IO-Link
Inputs
PLC
IO-Link
IOL-Master
interface
K2
Fig. 1: Category 1 block diagram
1A
24 V
Determination of
position
1V3
OBEA-V5
1S3
a
Control a
Control b
1V1
1M
M
3~
High-response valve with
A B
OBEA-V5 electronics and
IO-Link Class B
b
P T
other actuators
1V2
1Z2
1P
Dangerous
movement
1Z1
1S1 1S2