•
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.
8-pin, RLY3-OSSD1 safety relay
32
31
I1
I2
24
A2
14
23 13
RLY3-OSSD1
K1
K2
F2
F1
+24 V DC
F0
L +
0 V DC
L –
E255787/00/2019-11-11
k2
z
k1
k2
k1
z
x
y
x
1)
y
2) PELV
S
ys
te
m conne
c
ti
on
+24 V DC
deTem4 AP SP1
2
1
3
5
6
4
7
8
r
RES
ADO
OSSD1
OSSD2
EDM
0 V DC
n.c.
s
S1
H1
Figure 25: Connection diagram: 8-pin, RLY3-OSSD1 safety relay
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 multiple light beam safety device deTem4 A/P to a RLY3-OSSD1
safety relay. Operating mode: with restart interlock, external device monitoring
(EDM), and application diagnostic output.
•
Mode of operation
If the light path is clear and the RLY3-OSSD1 is in a fault-free de-energized posi‐
tion, the INFO LED and the H2 lamp flash. The system can be switched on. The
system is enabled by pressing S1 (pushbutton is pressed and released). Outputs
OSSD1 and OSSD2 carry voltage, the RLY3-OSSD1 is switched on. When the light
path is interrupted, the OSSD1 and OSSD2 outputs switch the RLY3-OSSD1 off.
•
Fault analysis
Cross-circuits and short-circuits of the OSSDs are recognized and lead to the lock‐
ing state (lock-out). The malfunction of the RLY3-OSSD1 is detected. The shut-
down function is retained. Manipulation (e.g., jamming) of the S1 pushbutton pre‐
vents the output current circuits from being enabled.
PROJECT PLANNING
4
8024782/2019-11-19 | SICK
O P E R A T I N G I N S T R U C T I O N S | deTem4 A/P
43
Subject to change without notice