SICK miniTwin4 User Manual

11 Troubleshooting
11.1 Safety
DANGER
H
azard due to lack of effectiveness of the protective device
Persons and parts of the body to be protected may not be recognized in case of non-
observance.
b
Immediately shut the machine down if the behavior of the machine cannot be
clearly identified.
b
Immediately put the machine out of operation if you cannot clearly identify or allo‐
cate the fault and if you cannot safely remedy the fault.
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
Persons and parts of the body to be protected may not be recognized in case of non-
observance.
b
Do not do repair work on device components.
b
Do not make changes to or manipulate device components.
b
Apart from the procedures described in this document, the device components
must not be opened.
NOTE
A
dditional information on troubleshooting can be found at the responsible SICK sub‐
sidiary.
11.2 Diagnostic LEDs
11.2.1 Indications when switching on
Overview
NOTE
Bo
th twin sticks must always be switched on at the same time. When one of the twin
sticks is taken out of operation, the second twin stick must be switched off briefly
before switching on again.
After the safety light curtain is switched on, it goes through the power-up cycle. The
LEDs indic
ate the device status during the power-up cycle.
The LEDs have the following meanings:
Table 14: LEDs during power-up cycle
LED Meaning
O All LEDs
LED test. All LEDs light up briefly.
TROUBLESHOOTING 11
8012624/10OM/2018-08-09 | SICK O P E R A T I N G I N S T R U C T I O N S | miniTwin4
83
Subject to change without notice

SICK miniTwin4 Specifications

General

Brand	SICK
Model	miniTwin4
Category	Security Sensors
Language	English