Bosch Rexroth 4WRPD - 2.7.10 Connection example;block diagram for direct operated valves with two solenoids

Safety instructions 21/48
RE 29391-B/05.2021; 4WRPD(H), 4WRPQ(H), 4WRPF(H), 4WRLD, 4WRLF, 4WRLQ, 5WRPF10, 5WRPQ10, Bosch Rexroth AG
2.7.10 Connection example/block diagram for direct operated valves with two
solenoids
For type III according to EN 201:2009, two separate switch-off paths are required.
The following overview illustrates an example realization of a switch-off path for an
injection molding machine with direct operated valve with 2 solenoids on Multi-
Ethernet basis. For the second switch-off path, an additional suitable valve is
required. For this application, the specific requirements of EN 201:2009 are to be
complied with.
The connection example only shows the safety-relevant signals of the Multi-
Ethernet electronics. For all other signals and interfaces, refer to the valve-specific
data sheets.
Fig. 2: Block diagram for direct operated valves with two solenoids
a0b
A B
P T
b
G
U
a
(123467) = 8+4
(ABCDEF) = 6+PE
1, 2, 3, 8, 9, 10
are safety-related
connections of the 11+PE connector of the
valve on Multi-Ethernet basis; for further
connections, see valve data sheet (values
in brackets: connections when using a
8+4 connector and when using a 6+PE
connector)
PELV/SELV
24 V mains
adaptor according
to VDE0100
part 410
Hydraulics
actuator side
Enable signal
that can be
switched off
safely
Enable
P-A
3(3)(D)
24 V
(18..36 V)
GND
Inputs
Multi-Ethernet
electronics
Outputs
Enable
acknowledgement P-B
Hydraulics supply
side
1(1)(A)
2(2)(B)
10(4)(E)
Enable
P-B
Enable signal
that can be
switched off
safely
9(7)(F)
8(6)(C)
Enable ac-
knowl
edge-
ment P-A