Xylem IM255 AQUAVAR Intelligent Pump Controller - Manual (Page 69)

• A Fast ramp setting will have a 5 second acceleration ramp time and an 8 second
deceleration time.
• A Medium ramp setting will have a 10 second acceleration ramp time and a 10
second deceleration time.
• A Slow ramp setting will have a 20 second acceleration ramp time and a 15 second
deceleration time.
• Acceleration ramps are set in Parameters [3-41] and [3-51]. Deceleration ramps are
set in Parameters [3-42] and [3-52].
The next screen will allow the user to automatically configure the rest of the parameters to
default settings. The only parameter that must be set after selecting [Yes] is the setpoint.
After the setpoint is configured the setup of the controller is complete. The default
configurations are described in the table below. Note that [unit] will reflect the control
units selected previously. If No is selected the Genie will prompt to proceed to the
Feedback Setup.
Table 19: Autoset configuration
Autoset Configuration Constant Pressure Level Control Flow Control
Transducer Max Feedback 300 [unit] 300 [unit] 300 [unit]
Transducer Type 4-20mA 4-20mA 4-20mA
Feedback 1 Source AI 53 AI 53 AI 53
PID Performance Normal Fill (Normal) Normal
Sleep Mode Enabled Enabled Disabled
Sleep Frequency 30 Hz 30 Hz NA
Restart Difference 5 [unit] 5 [unit] NA
No Water/Loss of Prime
Fault
Enabled Enabled Enabled
No Water/Loss of Prime
Restart Time
10 min. 10 min. 10 min.
Constant slave
The Constant Slave Operating Mode allows control of up to 2 external fixed speed pumps
using the 2 on board relays. This mode can be used to extend the capacity of a system by
staging fixed speed pumps as the demand in the system increases. Pumps can then be
destaged as the system demand decreases. The variable speed pump is always the lead
pump. The fixed speed pumps can be staged and destaged to create a lead/lag system.
The Application Type can be set to either Constant Pressure or Level Control. Set control
variable units and ramps as described in Single Pump Operating Mode.
Operation
Aquavar ® Intelligent Pump Controller INSTRUCTION MANUAL 67