SICK WebChecker MLG-2 User Manual

14 Troubleshooting
This chapter describes how to identify faults on the MLG-2.
14.1 Response to faults
CAUTION
Cease operation if the cause of the malfunction has not been clearly identified.
Immediately put the machine out of operation if you cannot clearly identify the fault and
if you cannot safely remedy the problem.
14.2 SICK support
If you cannot remedy the error with the help of the information provided in this chapter,
please contact your respective SICK subsidiary.
14.3 LED indicators and error indicators
This section explains what the LED error indicators mean. The status indicators are
described in a separate section see "Display and operating elements", page 19.
LEDs on the front of the sender
Table 38: LED indicators on the sender
Red LED Yellow LED Green LED Meaning
o o o
Supply voltage off or too low
o o O
Supply voltage on
o Ö 1 Hz O
Test input active
O o o
Hardware error
LEDs on the front of the receiver
Table 39: LED indicators on the receiver
Red LED Yellow LED Green LED Meaning
o o o
Supply voltage off or too low
o o O
Supply voltage on
o O O
Min. one edge detected
o o Ö 1 Hz
IO-Link communication
o Ö 1 Hz O
Teach-in active
o Ö 3 Hz O
QoR alarm or alignment aid active
Ö Ö Ö
Device active search function only via IO-Link
If multiple MLG-2s are installed in one applica‐
tion, you can activate the device search function
to identify a certain MLG-2.
Ö 10 Hz o o
Error for sensor teach-in or material teach-in
have occurred.
O o o
Hardware error
O O o
Synchronization error: Both sync beams blocked
O o O
Short-circuit
TROUBLESHOOTING 14
8024643/2019-09-02 | SICK O P E R A T I N G I N S T R U C T I O N | MLG-2 WebChecker
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Subject to change without notice

SICK WebChecker MLG-2 Specifications

General

Brand	SICK
Model	WebChecker MLG-2
Category	Measuring Instruments
Language	English