Siemens SIMATIC IPC377E, Руководство по эксплуатации

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Safety instructions
2.3 Notes on usage
SIMATIC IPC377E
Operating Instructions, 2017/05, A5E40965249-AA
19
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
active.
•
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 "Technical specifications (Page 67)".