Maintenance
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Automation Panel 9xD - Hygienic design User's manual V 1.80
10.2 User tips for increasing the service life of the display
10.2.1 Backlight
The service life of the backlight is specified by its "half-brightness time". An operating time of 50,000 hours would
mean that the display brightness would still be 50% after this time.
10.2.1.1 Measures to maintain backlight service life
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The display brightness can be set to the lowest level that is comfortable for the user's eyes.
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Bright images should be avoided as far as possible.
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A 50% reduction in brightness can increase the half-brightness time by about 50%.
10.2.2 Image persistence
Image persistence refers to the "burning in" of a static image on a display after being displayed for a long time. It
does not only occur with static images, however. Image persistence is also referred to in the technical literature as
screen burn-in, image retention, memory effect, memory sticking or ghost image.
There are 2 different types:
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Area type: This type can be seen in a dark gray image. The effect disappears if the display is switched
off for a long time.
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Line type: This can result in permanent damage.
10.2.2.1 What causes image persistence?
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Static images
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No screensaver
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Sharp transitions in contrast (e.g. black/white)
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High ambient temperatures
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Operation outside of specifications
10.2.2.2 How can image persistence be reduced?
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Switch continuously between static and dynamic images.
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Prevent excessive differences in brightness between foreground and background elements.
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Use colors with similar brightness.
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Use complementary colors for subsequent images.
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Use screensavers.
10.3 Pixel errors
Information:
Displays can contain faulty pixels (pixel errors) due to the manufacturing process. They are not
grounds for initiating a complaint or warranty claim.
10.4 System units
For additional information about maintaining and servicing configurations with PPC2x00 system units, see the
respective system manual. These are available for download on the B&R website.
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