Xylem IM255 AQUAVAR Intelligent Pump Controller - Manual (Page 87)

NOTE: Only connect external devices with non-powered contacts to the digital inputs.
NOTE: Only DI 19 is available for the Pump Protect Function in Duplex Control.
The Pump Protect Delay [22-00] time can be configured to prevent false or nuisance
tripping or the Pump Protect warning or alarm. When Pump Protect is enabled and the
corresponding digital input is open for more than the time indicated in Pump Protect
Delay [22-00], the Pump Protect warning or alarm is issued. The same delay time is used
for Pump Protect on DI 19 and DI 27.
The Pump Protect alarm will reset according to Reset Mode [14-20] and Automatic Restart
Time [14-21].
Digital input setup
Any unused digital input can be configured as part of the Digital Input Setup. A list of the
digital inputs and their associated functions are shown below. The default function of a
digital input can change based on the Operating Mode selected. Digital Input 18 is
utilized as a Start function for all operating modes. This input has a dedicated function and
cannot be configured in the Digital Input Setup. A separate table is given for the Duplex
Control mode due to the specific functionality assigned to the digital inputs.
NOTICE:
Changing the function of any assigned digital input or output when set to Duplex Control
Mode will cause the controller to malfunction.
Operation
Aquavar ® Intelligent Pump Controller INSTRUCTION MANUAL 85