SICK TR4 Direct Rectangular - Troubleshooting in Safe Series Connection

Display Possible cause Remedy
Ö Y
ellow (1 Hz)
Actuator in the limit range
of t
he switch-off distance;
safe state, OSSD 1 and
OSSD 2 active
b
R
ealign the sensor and actuator to one
another.
7.4 Troubleshooting in safe series connection
If an error occurs in a device in a safe series connection, the affected device displays
t
he error and switches off the OSSDs (Status/Diag LED flashes red). All downstream
devices switch off their OSSDs (Status/Diag LED flashes green).
1 2 3 4 5
6 6 7 8 8
Figure 7: Trouble shooting for cascaded safety switches
1-5
Safe series connection with 5 safety switches. Safety switch 3 is in the error state.
6
LED lights up green
7
LED flashes red
8
LED flashes green
FAULT DIAGNOSIS 7
8023286/15V1/2019-11-22 | SICK O P E R A T I N G I N S T R U C T I O N S | TR4 Direct Rectangular
21
Subject to change without notice