SICK ReLy OSSD3

3.2.3 Compatible sensor types
The safety relay is suitable for:
•
S
afety sensors and safety switches with OSSD output, e.g.: Electro-sensitive pro‐
tective equipment (ESPE) with a single-channel or dual-channel monitored active
switching output with cross-circuit detection (OSSD)
3.2.4 Restart interlock
A restart interlock can be implemented with a reset pushbutton.
3.2.5 External device monitoring
Permanent external device monitoring can be implemented using external wiring.
3.2.6 Status indicators
LEDs
RELY
PWR
OUT
1
3
2
3
I1
Y1
14
2
4
I2
Y2
A2
S1
3
3
A1
R1
34
PWR
OUT
13
23
I1
Y1
14
24
I2
Y2
A2
R1
A1
S1
OSSD3
1099969
RELY
33 34
Figure 2: LEDs
The labeled positions are only partially assigned LEDs. The positions and their labeling
(e
xcept for the upper 2 lines) also show the pin assignment of the terminals on the front
connector.
Table 1: Safety relay indicators
Labeling Color Function
PWR Green/Red Voltage supply
OUT Green Enabling current paths
I1 Green Safety capable input
I2 Green Safety capable input
S1 Green Reset pushbutton input, exter‐
nal de
vice monitoring (EDM)
Y1 Green Application diagnostic output
Y2 Green Application diagnostic output
(r
eset required)
Further topics
•
"St
atus indicator (LED)", page 22
3 P
RODUCT DESCRIPTION
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O P E R A T I N G I N S T R U C T I O N S | ReLy OSSD3 8023925/2019-10-11 | SICK
Subject to change without notice