SICK T4000 Direct Unicode, Operating Instructions Manual

Page: 31 / 48

8 Troubleshooting
8.1 Safety
DANGER
Hazard 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
Hazard 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
Hazard 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
If you cannot remedy the fault with the help of the information provided in this chapter,
please contact your respective SICK subsidiary.
8.2 LED status indicators
Table 4: Meaning of LED indicators
LED indication Meaning
STATE
O Green
Normal mode
Ö
Green
Teach-in process (for other signal function, see System
status )
OUT
O
Yellow Valid actuators detected at all connected sensors
DIA
O
Red
■
Test input activated
■
Internal error
■
EDM fault
■
Invalid teach-in process (see System status )
■
EMC fault
NOTE
In the event of a fault, the evaluation unit can be reset to operational status by inter‐
rupting the voltage supply (approx. 10 seconds).
TROUBLESHOOTING
8
8022726/2019-05-07 | SICK O P E R A T I N G I N S T R U C T I O N S | T4000 Multi 31
Subject to change without notice