ABB 6550-500 Manual De Instrucciones página 49

Operation
28 Operation
General
Lighting systems can be controlled, or dimmed, both
directly, via FM Insert 6550U-10x-500, and via
supplementarily connected pushbuttons.
After switching off, the brightness value previously
set is stored (memory function). Upon initial
actuation, the Memory Pushbutton Controller dims
from bright to dark, the dimming direction changing
with each stop. When maximum brightness is
attained, the Memory Pushbutton Controller stops;
when minimum brightness is attained, the dimming
direction changes.
If "brighter" is switched on by means of dimming,
the dimming direction is from minimum to
maximum brightness.
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