VLT
®
8000 AQUA
Introduction
■
AEO - Automatic Energy Optimization
AEO is intended for use on Variable Torque single
motor applications. Normally, the U/f characteristics
have to be set on the basis of the expected load at
different frequencies. However, knowing the load
at a given frequency in an installation is often a
problem. This problem can be solved by using a
VLT 8000 AQUA with its integral Automatic Energy
Optimization (AEO), which ensures optimum energy
utilization. All VLT 8000 AQUA units feature this
function as a factory setting, i.e. it is not necessary to
adjust the AFD U/f ratio in order to obtain maximum
energy savings. In other AFDs, the given load and
voltage/frequency ratio (U/f) must be assessed to
carry out correct setting of the AFD.
Using Automatic Energy Optimization (AEO), you
no longer need to calculate or assess the system
characteristics of the installation, since Danfoss VLT
8000 AQUA units guarantee optimum, load-dependent
energy consumption by the motor at all times.
The figure on the right illustrates the working
range of the AEO function, within which energy
optimization is enabled.
If the AEO function has been selected in parameter
101, Torque characteristics, this function will be
constantly active. If there is a major deviation from the
optimum U/f ratio, the AFD will quickly adjust itself.
Advantages of the AEO function
•
Automatic energy optimization
•
Compensation if an oversize motor is used
•
AEO matches operations to daily or
seasonal fluctuations
•
Energy savings in a constant volume system
•
Compensation in the oversynchronous
working range
•
Reduces acoustic motor noise
MG.80.A7.22 - VLT is a registered Danfoss trademark
11
Rosewood STP ST42 General (Operation and Maintenance Manual - Part 4:
Section 6.3 Manufacturers Manuals 6.3.33 Danfoss VLT Aquadrive 8000) Vendor Manual
QP Id: VM207
Active: 03/09/2013
Page 17 of 208
