Troubleshooting - SICK ZLD18 Instrucciones De Operación

8

TROUBLESHOOTING

8 Troubleshooting
10
Figure 2: Alignment
2 Sensing range
Adjust the distance between the sensor and the reflector according to the corresponding
diagram [see figure 3] (x = sensing range, y = operating reserve).
After alignment is complete, move a non-transparent object into the path of the beam. Use
table 1 to check the function. If the switching output fails to behave in accordance with
table 1, check the application conditions.
Function reserve
100
5
4
3
10
2
1
1
0 2 4
(6.56) (13.12)
Figure 3: Characteristic curve
PL23FT
1
PL20A
2
P250
3
PL40A
4
PL80A
5
3 Sensitivity setting
Sensor not possible to be set: The sensor has been adjusted by the factory to provide maxi‐
mum sensitivity and is ready for operation.
4 Operation with marginal light reception
The sensor will provide a pre-failure notification by flashing the orange LED indicator when
operating with marginal light reception. This may be the result of incorrect alignment, cont‐
aminated optical surface(s), and/or insufficient light remission from the target. The sensor
may be equipped with a Health or Alarm output, which provide a discrete signal when the
sensor is operating in the marginal condition. Refer to
Health/Alarm output operation.
The Troubleshooting table indicates measures to be taken if the sensor stops working.
1
0
2
0
3
0
4
0
5
0 0
Sensing range
Figure 4: Bar graph
Sensing range
6 8
(19.68) (26.24)
Distance in m (feet)
table 2
1.5 1.7
2.1 2.9
4.0 5.0
4.0 5.0
5.4 6.2
2 4 6
(6.56) (13.12) (19.68)
Distance in m (feet)
Sensing range typ. max.
for additional detail on
8021946 | SICK
Subject to change without notice
8
(26.24)