Xylem IM255 AQUAVAR Intelligent Pump Controller - Manual (Page 67)

the motor nominal current and service factor. These parameters will configure the motor
overload protection feature.
The Motor Type menu allows selection of either a Submersible or Surface motor. This
selection will configure specific settings to properly operate the chosen motor type.
• If a Submersible motor is selected, the controller is configured to have a 30Hz
minimum speed (parameter Sleep Frequency/Low Limit [4-12] = 30Hz), ramp from
stop to 30Hz in 1 second (parameters 1-78 = 29Hz and 3-82 = 1 s) and to coast to stop
(parameters 1-80 = Coast, 1-82 = 10Hz).
• If a Surface motor is selected, set the minimum speed (default parameter Sleep
Frequency/Low Limit [4-12] = 30Hz), the stop ramp will be controlled by the default
deceleration ramps (parameters 3-42 and 3-52) and to coast to stop (parameters 1-80
= Coast, 1-82 = 10Hz).
NOTE: There are various parameters that are linked to the motor parameter settings.
Changing the motor parameter settings will also change the settings of these linked
parameters. It is recommended to set the motor parameters first to avoid overwriting any
settings made in the Start-Up Genie.
Application setup
The next menu set is the Application Setup which will allow selection and configuration of
the application type and control response. Select the application type by first selecting the
Operating Mode. Selecting the Operating Mode will configure specific parameters to
configure the selected mode. If the Operating Mode is changed, any changes made to
configure the previously configured Operating Mode will be overwritten. The Operating
Mode can be set to Single Pump, Constant Slave, Duplex Control, Speed Control or Test
Run Mode. The various Operating Modes are defined below.
Table 18: Operating modes
Operating Mode Description
Single Pump This mode is the default Operating Mode. Use this mode
for constant pressure, flow or level applications that use 1
controller operating a single pump.
Constant Slave This 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.
Operation
Aquavar ® Intelligent Pump Controller INSTRUCTION MANUAL 65