Operating Instructions
Chapter
2
CLX 490
8 009 237/0000/07-05-2002
©
SICK AG · Division Auto Ident · Germany · All rights reserved
2-3
Safety information
Internal protective circuits
The CLX is equipped with monitoring circuits that deactivate the laser diode in the event of
a malfunction.
Activation and deactivation of the laser diode is controlled by the reading pulse trigger.
A timer (laser timeout) automatically deactivates the laser diode in Reading mode ("Sensor
input" and "Serial interface" trigger mode) if the reading interval has not ended after
10minutes (default setting). However, it does not end the reading interval. In this case, the
CLX outputs the message
"Laser safety timeout"
on the terminal interface. The reading interval must be terminated by resetting the trigger
signal. The laser diode is activated again by the next reading trigger.
The laser timeout can be set in the range of 1 min to 25 h or deactivated
(see
In the Percentage Evaluation mode and in the Free-running Reading mode the laser
diode is constantly activated.
Note
In Reading mode, the CLX carries out a distance measurement referencing at regular
intervals. During referencing, it turns the laser diode on for a maximum of 10 seconds.
2.4
Quick stop and quick restart
2.4.1
Stopping the CLX
¾
Switch off the power supply.
This can result in loss of the following (at the most):
•
The application-specific parameter set, if it was stored
temporarily
in the CLX
•
The last reading result
•
Daily operating data
(operating hours counter, number of reading intervals, Good Read count, maximum
duration trigger, minimum duration trigger, average identification quality)
2.4.2
Restarting the CLX
¾
Switch on the power supply.
The CLX resumes operation with the parameter set that was
last stored permanently
and reset the daily operating data.
