Xylem IM167 R8 Aquavar CPC (Centrifugal Pump Control) - Manual (Page 103)

103
Energy Savings Information [Group 26]
Aquavar can calculate the energy savings as compared to a constant speed pump application.
To enable this function to perform properly, local energy costs and comparative application
information must be entered.
Enter the local energy cost in $ (local currency) per kWh into parameter 26.01($/KWhr) and
then enter the nominal power rating of a comparable fixed speed unit into parameter 26.02
(baseline power). To find this, look at the fixed speed pump performance curve and enter the
power for the rated operating point or maximum Brake Horsepower for the specific pump/
impeller combination.
Example - If your power cost is $0.06 per kWh, enter a value of .06 into parameter 26.01.
Parameter Name Value/Range Note(s)
26.01 $/kWh 0-1.00 Default is zero.
26.02 BASELINE 0-1000 HP Default is zero.
POWER
26.03 SAVINGS 0…65535 Scales the analog output when energy
SCALE savings is selected.
26.04 ENERGY SAVINGS OP 1 Calculates energy savings with the Aquavar
SAVE based on a fixed speed pump that turns
METHOD ON and OFF when not required.
SAVINGS OP 2 Calculates energy savings with the
Aquavar based on a fixed speed pump
that operates 24 hrs a day. Does not
turn off.
26.05 ENERGY DISABLED (Default) Allows resetting of savings to zero.
SAVE RESET RESET
One of the benefits of using Aquavar is its ability to automatically shut off the pump when not
required. Parameter 26.04 SAVINGS OPTION #2 allows the savings of using Aquavar to be
tracked during automatic shutdown. The OPTION # 2 will calculate according to a fixed speed
unit that is designed to run continuously 24 hrs a day, 7 days a week.
NOTE: This is an estimated comparative data used for ideal situations, CentriPro cannot
guarantee savings will be exactly as stated. Many system variables
may increase or decrease estimated savings.
Fieldbus Control
The Aquavar CPC may be integrated into BMS (Building Management Systems) or existing
Distributive Control Systems (DCS) via optional Fieldbus control modules. The use of Fieldbus
control modules allows selected Aquavar parameters and operating signals to be accessed
and modified.
Fieldbus control modules are available in numerous communication protocols, including:
DeviceNet, Modbus, Profibus.
Modbus
® is the DEFAULT protocol for the Aquavar CPC.
With the control module installed (See INSTALLATION manual), set parameter 30.01
FIELDBUS to YES. This will open up parameter groups 90 D SET REC ADDR and 92 D SET
TR ADDR. These parameter groups define the addresses and data sets that are exchanged
between Aquavar and the DCS.
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