KROHNE OPTISENS AAC 050 EN - Manual (Page 21)

Manual OPTISENS AAC 050
21 OPTISENS AAC 050
5.4 Activation and deactivation of the controller
The controller is activated and deactivated from the main display without any menus. Press key to switch
from Manual Mode (controller OFF) to Automatic Mode (controller ON) and vice versa. The actual mode is
indicated in the display.
CAUTION
Make sure that the controller is deactivated before connecting dosing pumps or other actuators!
Main menu
.
. Basic settings
Basic settings
.
.
Turn-on delay Turn-on delay Turn-on delay
OFF ON
Turn-on delay
180 s
5.5
Turn-on delay
Set a delay time which has to pass before the controller is activated after start-up or power interrupt. This
allows the measurement to settle and prevents inappropriate dosage of chemicals.
5.6 External controller stop
You can activate or deactivate the controller with an external switch by using the digital input. This feature
requires no settings or adjustments. If the digital input is short- circuited, the controller stops, and the
message „external controller stop“ appears in the display.
NOTE This feature can also be used as lack-of water indication. Just connect a level sensor to the digital input.