Xylem IM255 AQUAVAR Intelligent Pump Controller - Manual (Page 61)

Parameter number Parameter Name Default Value Parameter Description
20-21 Setpoint 50.0 Process setpoint. The
controller will adjust speed
to maintain this value. If
multiple setpoints are
enabled, this parameter will
display and allow
adjustment of the active
setpoint.
22-44 Restart Difference (%) 10% This is the difference
between the setpoint and
feedback that will cause the
controller to restart from
sleep mode. This is entered
as a % of the setpoint. For a
50psi setpoint, a 10%
Restart Difference will cause
the controller to restart from
sleep at 45psi.
4–12 Sleep Frequency/Low
Limit[Hz]
30 Hz This is the minimum speed
of the motor and the speed
at which the controller will
enter sleep mode.
5-11 Terminal 19 Digital Input No operation This general purpose digital
input is designated for the
Pump Protect Function.
5-12 Terminal 27 Digital Input No operation This general purpose digital
input is designated for the
Pump Protect Function.
22-00 Pump Protect Delay 10 s This is the time delay
between detection of a
Pump Protect condition and
the triggering of the Pump
Protect Alarm.
22-26 No Water/Loss of Prime
Function
Man. Reset Alarm This configures the No
Water/Loss of Prime
Function. Set this value to
Man. Reset Alarm in order
to utilize the No Water/Loss
of Prime Restart Function.
22-39 No Water/Loss of Prime
Limit
Size Dependent (HP) This value sets the No
Water/Loss of Prime limit.
When the pump HP falls
below this value while
operating at maximum
speed, the No Water/Loss of
Prime Function will be
implemented after the time
specified in No Water/Loss
of Prime Protection Delay
[22-27].
Operation
Aquavar ® Intelligent Pump Controller INSTRUCTION MANUAL 59