Xylem IM131R01 AQUAVAR AV II - Manual (Page 65)

Synchronous Controller - Used for multipump systems where all pumps will run at the same
frequency. (Used for more efficient pump operation.)
Actuator - Used if you have an external (PID) controller. In this mode the internal controller is
turned off. The output frequency changes proportionally based on sensor input (X1/2) and the
following chart. Low water, thermal protection and external on/off continue to function.
Manual - When this is used, the required value window in the main menu will change to “manual
control” and the actual frequency and actual value will be displayed (similar to the Jog Mode).
The and keys can then be used to set a specific frequency. If saved, this will become the set
point after power loss.
Start Value
This allows the operator to set a pressure drop from the required value at which the AQUAVAR II will
begin to ramp up, when there is demand. For example, if the required value is 50 psi and the
start value is set at 45 PSI, the AQUAVAR II will start when system pressure drops to 45 psi. This is
useful when small leaks in the system are causing pressure drops, that cannot be repaired.
Config. Required Value 2
This allows you to select the types of second input value in use in a two value system. Refer to
Section VII.
Relay Config.
This is used to select the function of the output relay for either motor running or slave pump. See
Section IX.
Submenu Offset
A discussion of the various windows and functions of this submenu can be found in Section VIII.
Regulation Mode
The “Normal” setting increases the output speed with falling signal (discharge control). The
“Inverse” setting decreases the output speed with falling signals (suction control).
Operator Custom Features and Displays
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20
Signal
(mA)
50 Hz 60 Hz
18
14
16
12
10
8
6
4
2
0
0 10 20 30 40 50 60 70
Sensor Fault
Frequency (Hz)
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