10 Troubleshooting
Table 11: Possible error displays via the LEDs
LED indicator/fault pat‐
tern / Fault pattern
Cause Measures
Green LED does not light
up
No voltage or voltage below the
limit value
s
Check the power supply, check
all electrical connections
(cables and plug connections)
LED 1 + LED 3: Quick flash‐
ing
During a teach attempt outside
the detection range, no end
point is applied
Bring pistons into the detection
range of the sensor
If no or only one end point is
found during Dynamic Teach, no
end points are applied
Adjust the position so that two
end points are found
Sensor position is impre‐
cise
Mounting position unfavorable Position sensor head as recom‐
mended in the oper
ating
instructions and run voltage
reset
Sensor does not find
switching points in
Dynamic Pilot / does not
switch
Traversing speed of the object is
insufficient
Increase traversing speed of the
piston or deactivate Dynamic
Pilot and manually teach in
switching points
Switching points are lost Sensor was not yet completely
taught in to drive
Perform several strokes (> 5)
and reset switching points
10 TROUBLESHOOTING
38
O P E R A T I N G I N S T R U C T I O N S | MPS-G with 2 / 3 switching points and IO-Link (up to 16 switching points) 8025942/2020-07-16 | SICK
Subject to change without notice
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