SICK GTB6V, Operating Instructions Manual

Page: 10 / 101

Figure 6: Detection
7 Troubleshooting
The Troubleshooting table indicates which measures are to be taken if the sensor stops
working.
7.1 Troubleshooting table
Table 4: Troubleshooting
LED indicator/fault pattern Cause Measures
Green LED does not light up No voltage or voltage below
the limit values Check the power supply,
check all electrical connec‐
tions (cables and plug connec‐
tions)
Green LED does not light up Voltage interruptions Ensure there is a stable power
supply without interruptions
Green LED does not light up Sensor is faulty If the power supply is OK,
replace the sensor
Yellow LED flashes Sensor is still ready for opera‐
tion, but the operating condi‐
tions are not ideal Check the operating condi‐
tions: Fully align the beam of
light (light spot) with the
object / Clean the optical sur‐
faces / Readjust the sensitiv‐
ity (potentiometer) / Check
sensing range and adjust if
necessary,
see figure 3,
page 8
Yellow LED lights up, no object
in the path of the beam Distance between the sensor
and the background is too
short Reduce the sensing range,
see figure 3
Object is in the path of the
beam, yellow LED does not
light up Distance between the sensor
and the object is too long or
sensing range is set too short increase the sensing range,
take note of the distance
between the sensor and the
background,
see figure 3
7
TROUBLESHOOTING
10
8021849 | SICK
Subject to change without notice