Getting Started; Features Of Controller (Latch On Or Latch Off) - FlowLine Smart-Trak AV23 Series Manual

Getting Started

Step Five
FEATURES OF CONTROL (LATCH ON):
The Smart Trak™ with compact relay controller package is designed to receive signals from two liquid sensors.
It turns its internal relay ON or OFF (as set by the invert switch) in response to the presence of liquid on both
sensors, and changes the relay status back again when both sensors are dry.
Automatic Empty:
Latch is ON & Invert is OFF.
Relay will energize when level
reaches high switch (both
switches are wet). Relay will
de-energize when level is
below the bottom switch (both
switches are dry).
Automatic Empty:
Latch is ON & Invert is ON.
Relay will energize when level
is below the bottom switch
(both switches are dry). Relay
will de-energize when level
reaches high switch (both
switches are wet).
The relay is a single pole, double throw type; the controlled device can be connected to either the normally
open or normally closed side of the relay. A time delay from 0 to 60 seconds can be set (delay occurs on both
the make and break). Typical applications are automatic filling (starting fill pump at a low level and stopping
pump at a high level) or automatic emptying operations (opening a drain valve at a high level and closing valve
at low level).
FEATURES OF CONTROL (LATCH OFF):
With the latch OFF, the Smart Trak™ package is designed to receive a signal from a single liquid sensor (the
second sensor is ignored). It turns its internal relay ON or OFF (as set by the invert switch) in response to the
presence of liquid, and changes the relay status back again when the sensor is dry.
High Alarm:
Invert is OFF. Relay will
energize when the switch
becomes Wet and will de-
energize when the switch
becomes Dry (out of liquid).
Low Alarm:
Invert is ON. Relay will
energize when the switch
becomes Dry (out of liquid) and
will de-energize when the
switch becomes Wet.
Note: The package can only be used as a single high alarm or single low alarm and not a as a high and low
alarm package because only one relay is present within the Smart Trak™. Also, the controller will only activate
upon the change of input 1A (1B will be ignored).
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