SICK STR1

8 Troubleshooting
8.1 Safety
DANGER
H
azard due to lack of effectiveness of the protective device
In the case of non-compliance, it is possible that the dangerous state of the machine
may not be stopped or not stopped in a timely manner.
b
Immediately shut the machine down if the behavior of the machine cannot be
clearly identified.
b
If a machine fault cannot be definitively determined or safely rectified, immediately
shut the machine down.
b
Secure the machine so that it cannot switch on unintentionally.
DANGER
H
azard due to unexpected starting of the machine
b
When any work is taking place, use the protective device to secure the machine or
to ensure that the machine is not switched on unintentionally.
DANGER
H
azard due to lack of effectiveness of the protective device
In the case of non-compliance, it is possible that the dangerous state of the machine
may not be stopped or not stopped in a timely manner.
b
Do not carry out any repairs on the device components.
b
Do not modify or manipulate device components.
b
Apart from during the procedures described in this document, the device compo‐
nents must not be opened.
NOTE
A
dditional information on troubleshooting can be found at the responsible SICK sub‐
sidiary.
8.2 Diagnostic LEDs
8.2.1 Switching on
Table 15: LED displays during initialization
STATE light emitting diode
(r
ed/green)
DIAG light emitting diode (yel‐
low)
Duration
O gr
een o
500 ms
O r
ed o
500 ms
o O y
ellow
500 ms
Ö gr
een
1)
o
1)
For unique coded and permanently coded safety switches only: If any actuators have already been taught
in, t
he STATE light emitting diode will flash once after initialization for each taught-in actuator.
8 T
ROUBLESHOOTING
30
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