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REF 542plus switchbay protection and control unit
Manual Part 3: Installation and Commissioning
1VTA100004-en DMS,2001-10-04
REF542
plus
: Installation and Commissioning
51 / 80
Figure 13:
Back-light Test Page
2 seconds delay
Back light off
1 second delay
Back light on
2 seconds delay. After the delay time is expired the following next test will be started
automatically:
6.4.1.4 LCD contrast test
The following LCD page is shown
L C D
C O N T R A S T
T E S T
x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x
x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x
x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x
2 sec
after
t
t
To HMI Tests
Page
From Backlight
Test Page
Figure 14:
LCD Contrast Test Page
2 seconds delay
Contrast varied from minimum to maximum (in a total time of 2 seconds) and then re-
stored to previous value
2 seconds delay. After the delay time is expired the HMI Test menu will be displayed
automatically: