OSSD 1
V
t
1
OSSD 2
V
t
300 µs
300 µs
Figure 3: Course of the OSSD test over time
1
Usually every 40 ms.
The interval is dynamic and can be smaller than 40 ms.
4.4.2
Application diagnostic output
The signal of the application diagnostic output (AUX) changes as soon as the actuator is
moved into or leaves the response range of the safety switch. In other words, the output
signal changes when the protective device is opened and closed. This is not a safety
output.
Table 2: Switching behavior of application diagnostic output
Actuator in
response range
The device is in
error state
Signal status a
In1 and In2
OSSDs
Application diag‐
nostic output
Yes
No
High
High
Low
Yes
Yes
High/Low
Low
High
Yes
No
Low
Low
Low
No
Yes/No
High/Low
Low
High
Table 3: Switching behavior of application diagnostic output only STR1-SAXM0AC8S01
Actuator in
response range
The device is in
error state
Signal status a
In1 and In2
OSSDs
Application diag‐
nostic output
Yes
No
High
High
High
Yes
Yes
High/Low
Low
Low
Yes
No
Low
Low
Low
No
Yes/No
High/Low
Low
Low
Table 4: Switching behavior of application diagnostic output only STR1-SAXM0AC8S02
Actuator in
response range
The device is in
error state
Signal status a
In1 and In2
OSSDs
Application diag‐
nostic output
Yes
No
High
High
High
Yes
Yes
High/Low
Low
Low
Yes
No
Low
Low
High
No
Yes/No
High/Low
Low
Low
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 | STR1
8018754/12IU/2020-01-30 | SICK
Subject to change without notice
