Danfoss vlt aqua Programming Guide

the actual power is accumulated and stored. The difference in energy can be read in par. 23-83,
Energy Savings .
The accumulated value for the difference in power consumption is multiplied with the energy cost
in local currency and the investment is subtracted. This calculation for Cost Savings can also be
read in par. 23-84,
Cost Savings .
Cost Savings = (∑(Reference Power – Actual Power)) * Energy Cost – Additional Cost
Break even (payback) occurs when the value read in the parameter turns from negative to positive.
It is not possible to reset the Energy Savings counter, but the counter can be stopped any time
by setting par. 28-80,
Power Reference Factor , to 0.
Parameter overview:
Parameter for settings
Parameters for readout
Rated Motor Power Par. 1-20 Energy Savings Par. 23-83
Power Reference Fac-
tor in %
Par. 23-80 Actual Power Par. 16-10/11
Energy Cost per kWh Par. 23-81 Cost Savings Par. 23-84
Investment Par. 23-82
23-80 Power Reference Factor
Range: Function:
100%
*
[0-100%] Set the percentage of the rated motor size (set in par. 1-20 or
1-21,
Rated Motor Power ) which is supposed to represent the
average power yielded at the time running with fixed speed
(before upgrade with variable speed control).
Must be set to a value different from zero to start counting.
23-81 Energy Cost
Range: Function:
0.00
*
[0.00 - 999999.99] Set the actual cost for a kWh in local currency. If the energy
cost is changed later on it will impact the calculation for the
entire period!
23-82 Investment
Range: Function:
0.00
*
[0.00 - 999999.99] Set the value of the investment spent on upgrading the plant
with speed control, in same currency as used in par. 23-81,
Energy Cost .
23-83 Energy Savings
Range: Function:
0 kWh
*
[0-0 kWh] This parameter allows a readout of the accumulated difference
between the reference power and the actual output power.
If motor size set in Hp (par. 1-21), the equivalent kW value will
be used for the Energy Savings.
2. Parameter Description VLT
®
AQUA Drive Programming Guide
226 MG.20.O2.02 - VLT
®
is a registered Danfoss trademark
2

Danfoss vlt aqua Specifications

General

Supply Voltage	200-240V, 380-500V, 525-600V
Enclosure	IP20
Features	Energy optimization
Approvals	CE, UL, cUL
Input Voltage Range	200-240V, 380-500V, 525-600V
Output Voltage Range	0 to supply voltage
Protection Features	Overvoltage, Undervoltage, Overcurrent, Short circuit, Ground fault
Communication Interfaces	PROFIBUS
Cooling Method	Air-cooled