Aeo - Automatic Energy Optimization - Danfoss VLT 6000 series Operating Instructions 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 6000 HVAC with its integral
Automatic Energy Optimization (AEO), which ensures
optimum energy utilization. All VLT 6000 HVAC 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
6000 HVAC 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
10
®
VLT 6000 HVAC Series
MG.61.A5.02 - VLT is a registered Danfoss trademark