16
DISCRETE INPUT FUNCTIONS
Float Backup - Off Level - Function 33
When a Discrete Input programmed for “Float Backup - Off Level“ closes, the Float Backup logic will be armed
and made ready to latch in one pump call for each of the “Float Backup - 1st , 2nd, 3rd, 4th On Level“ inputs that
close.
As the “Float Backup - 1st , 2nd, 3rd, 4th On Level“ inputs open, the pump calls remain latched until the Off Level
input also opens, then the latch is broken on all the pump calls, and the pumps are turned off.
Note: For a two float backup system, the “Float Backup - 1st , 2nd, 3rd, 4th On Level“ inputs may be replaced
with the High Level input for the Pump Down mode, or the Low Level input for the Pump Up mode.
See Page 42.
Float Backup - 1st On Level - Function 34
When a Discrete Input programmed for “Float Backup - 1st On Level“ closes, the Float Backup logic will issue one
pump call assuming that the “Float Backup - Off Level“ is closed. See Page 42.
Float Backup - 2st On Level - Function 35
When a Discrete Input programmed for “Float Backup - 2nd On Level“ closes, the Float Backup logic will issue
one pump call assuming that the “Float Backup - Off Level“ is closed. See Page 42.
Float Backup - 3rd On Level - Function 36
When a Discrete Input programmed for “Float Backup - 3rd On Level“ closes, the Float Backup logic will issue
one pump call assuming that the “Float Backup - Off Level“ is closed. See Page 42.
Float Backup - 4th On Level - Function 37
When a Discrete Input programmed for “Float Backup - 4th On Level“ closes, the Float Backup logic will issue
one pump call assuming that the “Float Backup - Off Level“ is closed. See Page 42.
Float Backup - High Level - Function 38
When a Discrete Input programmed for “Float Backup - High Level“ is closed, the High Level indicator will come
on and the High Level Alarm relay contacts will close. Also see Function 18.
Pump Down Mode (Parameter P.19 = 1)
All available pumps will be called to run when the “Float Backup - High Level“ input closes, assuming that the
“Float Backup - Off Level“ input is closed.
Pump Up Mode (Parameter P.19 = 2)
All pump operation will be disabled when the “Float Backup - High Level“ input closes.
When the “Float Backup - High Level“ input opens the “Pump Re-enable Delay” (set using Parameter P.37),
must expire before pump operation is allowed.
See Page 42.
Start Flush Cycle - Function 39
When a Discrete Input programmed for “Start Flush Cycle“ closes, the Flush Cycle will start (assuming that the
Flush Cycle Mode Parameter P.40 = 2). It does not matter how long the input remains closed, but it must be
opened to reset the logic. Typically this input is connected to contacts from an external Time Clock. See Page 22.
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