Toshiba vlp technology P9 ASD Installation & Operation Manual page 260

Table 6. (Continued) Discrete Input Terminal Assignment Selections and Descriptions.
Sel. No.
NO NC
Note: NO/NC = Normally Open/Normally Closed. NO/NC selection numbers are used when making system changes via
communications
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.
VLP Enable/Disable — Activation enables the VLP function for normal VLP operation. The VLP function is
142 143
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:
146 147 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
152 153
setting of F417.
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Terminal Selection Descriptions
P9 ASD Installation and Operation Manual