Troubleshooting - Leuze electronic CML 720i Ex Operating Instructions Manual

13

Troubleshooting

13.1 What to do in case of failure?
After switching on the light curtain, display elements (see chapter 3.4) assist in checking the proper func-
tion and troubleshooting.
In case of error, you can determine the error from the LED displays. With the error message you can deter-
mine the cause of the error and initiate measures to rectify it.
NOTICE
If the light curtain responds with an error display, you will often be able to eliminate the cause yourself!
 Switch off the system and leave it switched off.
 Analyze and eliminate the cause of the fault using the following table.
 If you are unable to rectify the fault, contact the Leuze electronic branch responsible for you or call the
Leuze electronic customer service (see chapter 15 "Service and support").
13.2 Operating indicators of the LEDs
Table 13.1:
LED green
ON
(continuous
light)
OFF
OFF
Flashing synchronously
(3 Hz)
Flashing synchronously
(9 Hz)
Flashing alternately (9 Hz)
Leuze electronic
Receiver LED displays - state and causes
LED yellow State
- Sensor ready
OFF Sensor not ready
Flashing Missing function reserve
(15 Hz)
Teach running
Teach error
System error
Possible cause
Interruption of the operating voltage;
Light curtain in start-up phase
Soiling of the lens covers
Misalignment of transmitter or
receiver
Operating range exceeded
Soiling of the lens covers
Operating range exceeded
No connection between transmitter
and receiver
Operating voltage too low
Receiver is not compatible with the
transmitter
CML 720i Ex
Troubleshooting
118