Johnson Controls SABROE UniSAB III Engineering Manual page 284

Change the contrast value with
ment range is from approximately 70% to 100%.
The value 100 = a dark display.
The value 70 = a light display.
Note that a setting below approximately 70% will make it impossible to read the text. The best contrast
setting for the display is usually around 90% (default).
When the setting is OK press
The display contrast can be adjusted with the
keys to make the display darker. Hold down the
darken the display.
The UniSAB III contrast setting system was originally set to a default value of 90. The contrast value is
stored in the controller memory. In some cases the user would like to increase the contrast to a higher
value than the maximum value of 100 so the contrast circuit was changed leading to a new default value
of 40.
The new contrast system was introduced with the revision F controller and revision F HMI. Default val-
ues and combination of controllers and HMIs are shown in :
HMI Controller
Before Rev. F
From Rev. F
The contrast range is between 0 (Light) and 100 (Dark).
If you experience a blank display after installation of a new software version or after replacing the con-
troller or HMI, proceed as follows:
Slowly adjust the contrast to a darker display, as described above, until you can see a picture. If no pic-
ture appears in the display, the contrast may be set too high. Try to adjust the contrast slowly to a lighter
display. Proceed until a picture appears in the display.
F2 /Up (higher contrast) and
and F4 /Exit. UniSAB III will now be restarted with the new settings.
F2
F1 + keys to make the display lighter and the
F2 or F3
Before Rev. F
90
90
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UniSAB III (boot) and communication set-up
F3
/Down (lower contrast) keys. The adjust-
key while repeatedly pressing
From Rev. F
Engineering manual - UniSAB III 1.10.8
F3
F1 +
F1 to lighten or
40
40
001930 en 2021.06