Owner's manual

27 AUG 08 PRELIMINARY MANUAL 39 of 57
Rev 1_3 Commander LI90 Series
• 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
• The OFF is selected or
• When the AUTO mode is selected and the level drops below the
OFF setting