Danfoss AK-PC 551 Technical Brochure

4 Technical brochure RC8CF102 © Danfoss 08-2014 AK-PC 551
Introduction
This technical brochure will give you a short introduction to
the AK-PC 551 pack controller� With an application example, it
is shown how easy the controller is congured and operated
through the graphical display�
The AK-PC 551 is a pack controller for 1 or 2 suction groups of
compressors and a common condenser�
AK-PC 551 supports a variety of compressor combinations
including variable speed, Digital scroll and Stream 4 cylinder
compressors� Additionally it oers a large number of energy
saving functions and optimization features�
AK-PC 551 can be fully congured through a LCD display� The LCD
display can be built in and/or be a remote connected display�
AK-PC 551 has a compact size of 8 DIN modules� All inputs and
outputs can be congured for a variety of functions making the
controller highly adaptable to any pack application�
AK-PC 551 can be connected into a MODBUS communication
network and is available with 24 Vac or 110-230 Vac power supply�
Applications
AK-PC 551 is used for capacity control of compressors and
condenser fans on small to medium sized refrigeration
systems� It covers the following main applications:
• One compressor group (max� 8 relays) and one condenser
group
• Two compressor groups (max� 4 relays per group) and a
common condenser

Danfoss AK-PC 551 Specifications

General

Brand	Danfoss
Model	AK-PC 551
Category	Controller
Language	English