Aeo - Automatic Energy Optimization - Danfoss VLT 7000 Series Manual

AEO - Automatic Energy Optimization

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 7000 Booster with its integral
Automatic Energy Optimization (AEO), which ensures
optimum energy utilization. All VLT 7000 Booster
units feature this function as a factory setting, i.e. it
is not necessary to adjust the frequency converter
U/f ratio in order to obtain maximum energy savings.
In other frequency converters, the given load and
voltage/frequency ratio (U/f) must be assessed to carry
out correct setting of the frequency converter.
Using Automatic Energy Optimization (AEO),
you no longer need to calculate or assess the
system characteristics of the installation, since
Danfoss VLT 7000 Booster 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 frequency converter 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 air volume system
• Compensation in the oversynchronous
working range
• Reduces acoustic motor noise
MG.70.A1.02 - VLT is a registered Danfoss trademark
VLT® 7000 Booster
9