Man D2862 LE423, Руководство по эксплуатации

Страница: 46 / 132

Commissioning and operation
46
The table has 3 columns for each measuring point. Each entry contains an abbreviation of the designation
of the measuring point, the current measured value and the unit of measurement. The alarm status is
presented via LED symbols. As long as the LED is green the value is in the normal range. If the initial alarm
is reached the colour changes to orange and with a main alarm to red. A flashing LED indicates that the
alarm has not yet been visually acknowledged. If there is a sensor failure, the LED goes out.
Automatic dimming
A photo element is integrated in the front plate of the display unit. This registers the brightness of the envir­
onment and the background lighting is automatically adapted to the circumstances. When the light condi­
tions get darker the brightness of the display is reduced; if there is more light it is increased.
The automatic dimming can be adjusted to one's own requirements. By simultaneously activating the but­
tons (4) and (2) or (3) the darkest point of the display lighting can be set.