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Safety instructions
2.2 Notes on usage
Note
Use in an industrial environment without additional protective measures
The device has been designed for use in a normal industrial environment in accordance with
IEC 60721-3-3 (pollutant class 3C2 for chemical influences, 3S2 for sand and dust).
TFT displays
NOTICE
Burn-in effect and backlighting
A permanent picture with bright screen objects leads to a burn-in effect. The longer the
same screen contents are displayed, the longer it will take for the burn-in effect to
disappear. Screensavers (for example, "starfield simulation") for the backlit active black
mode reduce the burn-in effect. The brightness of the backlighting deteriorates over the
course of the screen's life cycle.
The service life of the screen and backlighting is extended by the following measures:
• Switch on the screensaver. The backlight brightness is reduced while the screensaver is
• You should also reduce the backlighting.
• Observe the backlighting operating time.
Defective pixels in the display
At present, the manufacturing process of modern displays does not guarantee that all pixels
of the display will be perfect. A small number of defective pixels in the display is therefore
unavoidable. This does not present a functional problem as long as the defective pixels are
not bunched in one location.
Additional information is available in the section "General technical specifications
(Page 120)".
28
active.
Operating Instructions, 12/2016, A5E03409486-AE
SIMATIC IPC277D

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