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Table 6. Discrete Input Terminal Assignment Selections and Descriptions. (Continued)
*Sel. No.
NO NC
Low Suction/No Flow Protection — Will not allow the ASD to start if activated, or terminates the ASD output
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upon activation (if running) in the event of the loss of feed water or a closed output valve at the pump output.
Sealing Water — Once an adequate water supply is detected at the pump seal via a reed switch, activation enables
140 141
the ASD for normal operations.
Virtual Linear Pump Enable/Disable — Activation enables the Virtual Linear Pump function for normal
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operation. The Virtual Linear Pump function is disabled when the terminal is not active.
144 145 ON Float — Activation runs the ASD at the setting of F456.
OFF Float — Activation has a dual function:
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1) Changes the operating mode from Process Hold to Direct.
2) Turns off the ASD.
148 149 Trigger Float — Activation changes the operating mode from Process Hold to Direct.
Alarm Float — This input is typically connected to a float switch that, when activated, annunciates that the fluid level
150 151
is now critical. The discrete output terminals OUT1 and/or OUT2 may be associated with the activation (set OUT1/
OUT2 to TBA Alarm Float to activate an auxiliary system — i.e., aux pump, relief valve, audible/visual alarm, etc.).
TBA HOA Switch — Activation enables Time-Based Alternation operation. Operates in conjunction with the
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setting of F417.
NO/NC = Normally Open/Normally Closed.
*Selection numbers are used when configuring the ASD via communications. The Normally Open (NO) or Normally
Closed (NC) configuration must be chosen by selecting the associated number.
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Terminal Selection Descriptions
P9 ASD Installation and Operation Manual
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