Danfoss AK-PC 551 User Manual

20 User Guide RS8GY302 © Danfoss 2015-06 AK-PC 551
Connections when using Setup Wizard
If you have used the Setup Wizard for the conguration, the controller will automatically assign the selected functions
to inputs and outputs in accordance with the following prioritised order:
The assignment of functions on the respective inputs and outputs can be regulated
in “IO conguration”. Here is an example of 3 compressors and 3 fans:
Digital outputs (DO1-DO8):
• Pulse output for control of the
capacity valves for digital scroll,
stream or Bitzer CRII will be
located on solid state outputs
DO5 and DO6
• Compressor start and unload-
ers for suction groups A and B,
respectively
• Fans
• Injection ON
• Alarm
Digital inputs (DI1-DI8):
• Compressor safety inputs for suc-
tion groups A and B, respectively
• Fan safety input
• External main switch (start/stop)
• HP safety switch
• LP safety switch for suction
groups A and B, respectively
• Night status
• Heat recovery
• Load sheeding
• General alarm inputs DI1-DI3
Analogue outputs (AO3-AO4)
• Compressor speed control for
suction groups A and B, respec-
tively
• Condenser speed control
Analogue inputs (AI1-AI8)
• PoA and PoB suction pressure is
located on AI1 and AI2, respec-
tively
• Pc condensation pressure is
located on AI3
• Sc3 outside temperature is
located on AI4
S4A and S4B media temperature
• S7 media temperature, condenser
• Sd comp. 1 discharge gas tem-
perature for digital scroll/stream
compressor for suction groups A
and B, respectively
• Ss suction gas temperature for
section groups A and B, respec-
tively
• Sd discharge gas temperature
for suction groups A and B,
respectively
• Saux for general thermostat
In this image you can see how
many outputs and inputs your
settings have provided.

Danfoss AK-PC 551 Specifications

General

Brand	Danfoss
Model	AK-PC 551
Category	Controller
Language	English