Festo SBO***-Q Series, Руководство пользователя, Страница: 36 / 256

1. System overview
1-18
Festo P.BE-SBO-Q-EN en 1602e
1.6 Selecting lighting
SBOC:
Always use external lighting.
SBOI:
Check whether the devices internal lighting is adequate
for the required application.
External lighting is commercially available.
Note
Use shielding – e.g. a light-blocking, black housing –
to protect against uncontrolled extraneous light
(e.g. ceiling lights, windows, etc.).
Uncontrolled extraneous light affects the images created
and thus the results.
If external lighting is used:
You can connect external lighting to the O2 output of the
device. The lighting is then controlled by the device.
Please note the correct system parameter configuration.
Note the maximum total current at the outputs.
The light source used for lighting the check parts has signific­
ant influence on image quality. What light source is suitable
for your application depends mainly on the characteristics of
the check parts/the characteristics to be checked.
A light source is suitable if it emphasises the relevant check
part characteristic with maximum contrast.