PAGE 11
SENSO
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Configuring the 685B
Internal Diagram-
Triac Models
The internal diagram displays the location of the control features for the triac versions of the 685B. The alert and
alarm set points are adjusted via the single turn potentiometers. The alarm relay is set using the first
potentiometer, and the alert relay is set using the third. The alert relay trips when the set percentage of the alarm
value is reached. Time delays for both functions are controlled using the second and fourth potentiometers. Alert
and alarm relays can be reset remotely (using
Pin 12
, see previous pages) or using the internal reset switch as
seen on the upper right hand corner of the diagram.
Using the dipswitches beneath the terminal connectors, relay operation can be selected to be either latch or
continuous, and each relay can be separately configured to be normally open (de-energized) or normally closed
