LEDs on control panel of the MLG-2
Table 40: LEDs on control panel of the MLG-2
LED Meaning
RS485 / IO-Link
O
No communication on
o
Supply voltage off or too low
ôHõ 1 Hz
Communication via IO-Link/RS-485
Alignment
O
Min. one edge detected
o
No edge detected and no error state
Ö 3 Hz
QoR alarm or alignment aid active
Ö 1 Hz
Teach-in active
Link
1
O
If there is an Ethernet connection
Data
1
Ö
If data is being received or sent
1
The LED indicators correspond to the Ethernet standard.
Meaning Measure
Supply voltage off or too low Check the supply voltage.
Hardware error Contact Service.
Sensor teach-in error Check that the front screens are clean.
Ensure that all light beams are unobstructed
during sensor teach-in.
Check the alignment of the sender and
receiver with each other. Perform sensor align‐
ment again.
Perform sensor teach-in again.
Check “Blanking” in the SOPAS settings in the
menu.
Material teach-in error No material is located between the sender and
receiver.
The material is transparent.
Check “Blanking” and “Material teach-in” in
the SOPAS settings in the menu.
Quality of Run warning Clean sensor.
Check alignment.
Check quality of the material.
Sync error Check the electrical connection.
Check the electrical cables for breakage.
Short-circuit Contact Service. Replace the device.
14 TROUBLESHOOTING
84
O P E R A T I N G I N S T R U C T I O N | MLG-2 WebChecker 8024643/2019-09-02 | SICK
Subject to change without notice
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