Connection Diagrams; Testing Plan; Connection Diagram For Rly3-Ossd2 With Restart Interlock And External Device Monitoring - SICK deTec4 Core Vibes Operating Instructions Manual

4
PROJECT PLANNING
4.4.3

Connection diagrams

4.5

Testing plan

28 O P E R A T I N G I N S T R U C T I O N S | deTec4 Core Vibes
Connection diagram for RLY3-OSSD2 with restart interlock and external device moni‐
toring
+24 V DC F0
s
1
+24 V DC
2
In2
4
In1
3
0 V
5
Com1
0 V DC
2) PELV
Figure 19: Connection diagram for RLY3-OSSD2 with restart interlock and external device moni‐
toring
1) Output circuits: These contacts must be incorporated into the control such that the dan‐
gerous state is brought to an end if the output circuit is open. For categories 4 and 3, they
must be incorporated on dual-channels (x, y paths). Type 2 devices are suitable for use up
to PL c. Single-channel incorporation into the control (z path) is only possible with a single-
channel control and taking the risk analysis into account.
2) SELV/PELV safety extra-low voltage.
• Task
Connection of a deTec4 Core Vibes safety light curtain to a RLY3-OSSD2 safety
relay. Operating mode: With restart interlock and external device monitoring.
• Mode of operation
When the protective field is clear, the OSSD1 and OSSD2 outputs carry voltage.
The system can be switched on when K1 and K2 are in a fault-free de-energized
position. The RLY3-OSSD2 is switched on by pressing S1 (pushbutton is pressed
and released). The outputs (contacts 13-14 and 23-24) switch the K1 and K2 con‐
tactors on. When the protective field is interrupted, the OSSD1 and OSSD2 out‐
puts switch the RLY3-OSSD2 off. Contactors K1 and K2 are switched off.
•
Fault analysis
Cross-circuits and short-circuits of the OSSDs are recognized and lead to the lock‐
ing status (lock-out). A malfunction with one of the K1 or K2 contactors is
detected. The switch-off function is retained. In the event of manipulation (e.g.,
jamming) of the S1 pushbutton, the RLY3-OSSD2 will not re-enable the output cur‐
rent circuits.
The manufacturer of the machine and the operating entity must define all required
checks. The definition must be based on the application conditions and the risk assess‐
ment and must be documented in a traceable manner.
S1
k1
r
1
+24 V DC
k2
2
OSSD1
4
OSSD2
3
0 V
5
Com1
S1
R1 Y1
L+
1)
x y
k1 k2
x y
z
k1
k2
z
F2 F1
I1 I2 A1 23 13
RLY3-OSSD2
Y2 A2 24 14
K2 K1
L–
E243749/00/2019-06-13
8024467/2019-06-18 | SICK
Subject to change without notice