4.4.5
Connection diagrams
K2
K1
L+
L–
F2 F1
+24 V DC
0 V
k2
k1
Reset
F0
E212770/00/2018-11-15
R1
Y1
Y2
24
A2
14
S1
I1
I2
23
A1
13
RLY3-OSSD2
3
2
4
1
5
STR1
State RES
H1
Figure 4: ReLy OSSD2 connection diagram, with restart interlock and external device monitoring
(EDM)
deTec4
1
2
4
3
5
2)
3) PELV
r
S
ys
te
m conne
c
ti
on
+24 V DC
OSSD1
OSSD2
0 V
Com1
1
2
4
3
5
s
S
ys
te
m conne
c
ti
on
+24 V DC
In2
In1
0 V
Com1
F2 F1
H1
+24 V DC
0 V DC
K1
K2
E213420/00/2018-11-15
R1
Y1
Y2
24
A2
14
S1
I1
I2
23
A1
13
RLY3-OSSD2
k2
k1
k2
z
k1
k2
k1
z
x
y
x
1)
y
F0
L+
L–
Figure 5: ReLy OSSD2 connection diagram, without restart interlock, with external device moni‐
toring (EDM)
4.5
Testing plan
The safety relay must be thoroughly checked by appropriately qualified safety personnel
during commissioning, after modifications, and at regular intervals,
4
PROJECT PLANNING
14
O P E R A T I N G I N S T R U C T I O N S | ReLy OSSD2
8020864/15W3/2020-02-21 | SICK
Subject to change without notice