Specifications
32 RK0YG302 © Danfoss 05/2007
Speed control of compressor and condenser
Introduction
AKD 2800
AKD-Variable Speed Drives are engineered to optimize perfor-
mance in your refrigeration system and as a part of ADAP-KOOL®
system are dedicated to the following refrigeration applications:
• Pack or Compressor Control
• Pumps
• HVAC (Centrifugal fans and pumps)
• Condensers
AKD-Variable Speed Drives oer a variety of benets in the refrige-
ration systems:
Energy savings
The continuous variable speed control by AKD makes intelligent
capacity control possible. It creates stability while balancing the
capacity to the actual load, resulting in improved system COP and
signicant energy savings. Intelligent compressor and condenser
fan control is a “must” in any optimised refrigeration system.
Improved control and product quality
Stabilizing and optimising pressures result in less ice formation
on evaporators producing optimal airow, air temperature and
reduced temperature “pull-down” resulting in improved product
quality. A stabilized condensing pressure will result in less migra-
tion of refrigerant thereby reducing the amount of refrigerant
needed in the system.
Noise reduction in many ways
AKD variable speed technology reduces the acoustic noise level of
condenser fan motors signicantly.
AKD also protects the environment against electrical noise by
having an excellent RFI lter in accordance with international
standards (EN 55011 class 1A or1B).
Longer lifetime
Continuous control with AKD reduces the total number of start/
stops required, as well as the mechanical wear of rotating compo-
nents.
Easy to install and use
AKD eliminates the need for special starting equipment due to
the inherent built-in current reduction. It oers motor protection
against overload and high temperature conditions and has built-
in crank case heater function. It is easy to integrate the AKD into
your facility due to the time saving, user-friendly set-up and instal-
lation procedures. In addition, the built-in PI controller provides
direct control of specic applications.
ADAP-KOOL® system integration
Thanks to LON module for data communication AKD-Variable
Speed Drives are easily integrated into ADAP-KOOL® system
making possible:
• Monitoring of the energy consumption
• Alarm monitoring and alarming
• Monitoring of actual capacity of pumps, compressors and fans
• Remote access to data via modem/gateway
• Remote commissioning through up/download of parameter les,
signicantly simplifying the installation
AKD can be easily applied with the standard EKC 531 and AK-PC
Pack controller for innitely variable speed control and energy
optimisation of Condenser fans and/or Compressors, matching
required capacity to load variations.
In HVAC applications around the refrigeration system, they can be
applied to AHU fans and circulation pumps, maximising energy
savings and improving system eciency.