PMA STB50, Operating Manual, Page: 34 / 50

34 STB50
3 Controls and functional description
3.1 Operating and display elements
3.2 Operation
The device is operated on 2 levels.
The desired parameter is opened with the
button.
Selection within a parameter or adjustment of a value takes place with the
and buttons.
Button combinations (press buttons simultaneously):
+ 1 parameter back
+ parameter is set to “0” or minimum value
Input
Power-on LED
Main relay LED
(safety-related)
Pre-alarm relay LED
Reset button
Operating mode
Actual value
Adjusted limit value
Parameter button
Up/down adjusting keys