27 AUG 08
PRELIMINARY MANUAL
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Rev 1_3
Commander LI90 Series
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General (Open Functions)
o
Opening Screen indicates the Level of Liquid in the tank/vessel along with the
true analog (4-20 mA) input
•
Regardless on how the input level is configured, the bar graph will show
the true 4-20 mA input provided by the sensor
o
Pressing the Lower Left Soft key will jump the display to indicate the relay status.
Above the relay status will be the liquid level.
•
Pressing the lower left soft key will return the display back to the opening
screen
•
Pressing the upper left soft key will jump the screen to the HAND / OFF /
AUTO (H.O.A.) functions for each relay.
o
The H.O.A. screen for each relay will indicate each relay, the current status of
each relay and soft keys to jump back or to the next relay
•
AUTO – This mode places the relay in automatic. Relay will energize
based upon the ON setting and will De-energize based upon the OFF
setting.
•
OFF – This mode turns the relay OFF (de-energized). The ON and OFF
settings are ignored in this mode. This mode is helpful in taking a relay
off-line for maintenance.
•
HAND – This mode turns the relay ON (energized). This mode is helpful
in overriding a relay function. Relay will be energized until
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The OFF is selected or
•
When the AUTO mode is selected and the level drops below the
OFF setting
