GridScan/Mini-SB2/-ST2
English
© CEDES | V 2.2
11
12. Troubleshooting
Emitter edge (Tx) Receiver edge (Rx)
Action
LED off
LED off
`
Check electrical connections.
`
Check supply voltage of the door controller.
LED off
LED red
`
Check the connection of the synchronization cable.
LED green
LED always green
(even when interrupted)
`
Make sure the sensor edges are not mounted close to any
shiny or reflective surface.
`
Restart the system.
LED on/off
LED on/off
(flickering red)
`
Check power supply.
`
Check connections.
LED green
LED on/off, min. 100 ms off (red,
slow blinking, frequency depends
on the number of elements)
`
Make sure the protective field is clear of interruption.
`
Check the alignment of the light curtain.
`
Clean elements.
LED green
LED switching between red
(interrupted) and green (free)
(sporadically flickering)
`
Make sure the protective field is clear of interruption.
`
Clean the elements.
`
Make sure that the cables and edges are located away
from sources of electromagnetic interference.
`
Ensure that the emitter and receiver are correctly aligned
and remain so during door closure (e.g. that vibrations do
not cause edges to become misaligned).
`
Restart the system.
LED green
LED always red
`
Make sure the protective field is clear of interruption.
`
Reopen door completely
`
Clean the elements.
`
Check the alignment of the light curtain.
`
Check that the test input is connected to the test output
signal of the door control unit and that the signal level
and logic (HIGH/LOW) are correct. If the test input is not
used, connect it permanently to U
SP
.
`
Measure the U
SP
voltage.
`
Restart the system.
LED off
LED on/off, min. 100 ms off (red,
slow blinking, frequency depends
on the number of elements)
`
Check the connection of the synchronization cable.
LED green
LED on/off (red, fast blinking, 5 Hz)
Internal error occurred
`
Restart the system.
`
Replace Rx edge.
Important:
Whenever a parameter is changed, the system must be restarted.
If a problem persists, please contact your local CEDES representative. Visit www.cedes.com for contact data.
13. Maintenance
Although the GridScan/Mini-SB2/-ST2 does not need
regular maintenance, a periodic functional check is
strongly recommended:
`
Make sure the optical elements are clear of dirt and
dust. If necessary, clean the front surface with a soft
towel.
`
Make sure the edges are securely fastened.
`
Check the mounting position, cable routing and
connection of the sensor.
14. Disposal
The GridScan/Mini-SB2/-ST2 should only be replaced if
a similar protection device is installed. Disposal should
be done using the most up-to-date recycling technology
according to local regulations and laws. There are no
harmful materials used in the design and manufacture of
the sensor. Traces of such dangerous materials may be
found in the electronic components but not in quantities
that are harmful.
NOTICE
Damage to the optical elements
Never use any solvents, cleaners or mechanically
abrasive towels or high-pressure water to clean
the sensor.
Avoid scratching the optical elements while
cleaning.
