Data Sheet
Pack controller
Type AK-PC 782A
One controller for the entire CO2 booster pack.
The exible AK-PC 782A pack controller
delivers highest eciency.
AK-PC 782A is a powerful and exible controller
that provides precise regulation, improved
eciency, and enhanced user friendliness for
pack control in transcritical CO2 booster packs.
The controller exibility and eciency makes it
the obvious choice for all sizes of packs in all
climates.
AI227786437213en-000401
Features
Description
Supply voltage
24 V DC / AC ± 20%
Power consumption
8 V A
Analogue inputs
Pt 1000 ohm / 0 °C
Dissolution: 0.1 °C
Accuracy: ± 0.5 °C
Pressure transmitter type AKS 32R / AKS
2050 / AKS 32 (1 – 5 V)
Dissolution 1 mV
Accuracy ± 10 mV
Max. connection of 5 pressure transmitters on one module
Contact function (ON / OFF)
On at R < 20 ohm
O at R > 2K ohm
(Gold plated contacts not necessary)
ON / OFF supply voltage inputs
Low voltage
0 / 80 V AC / DC
OFF : U < 2 V
ON: U > 10 V
High voltage
0 / 260 V AC
OFF : U < 24 V
ON: U > 80 V
Relay outputs SPDT
AC-1 (ohmic)
5 A
AC-15 (inductive)
3 A
U
Min. 24 V - Max. 230 V
Low and high voltage must not be connected to the same output group
Solid state outputs
Can be used for loads that are frequently cut in and out e.g. unloaders, solenoid valve
Max. 240 V AC, Min. 48 V AC - Max. 0.5 A
Leak < 1 mA
Max. 1 AKV
Ambient temperature
During transport
-40 – 70 °C
During operation
-20 – 55 °C
0 – 95% RH (non condensing) - No shock inuences / vibrations
Pack controller, type AK-PC 782A
Features
• One controller for the entire CO2 booster pack
• Robust algorithms warrant safe initial start up and reliable operation
• Easy rst-time use with wizard-like set-up
• Scalable to control large booster packs with up to 12 compressors
• Supports variable speed, digital scroll, CRII, Stream and unloader compressors
• Speed control of up to 2 compressors per suction group
• Best t step control handles mixed compressor sizes
• Control of oil separator and oil receiver
• Liquid injection into suction line option
• Gas cooler capacity control of up to 8 fans
• Gas cooler temperature optimisation with regard to ambient temperature
• Optimal high pressure control
• Improved energy eciency with Danfoss Multi Ejector
• Receiver pressure management with four 4 control modes
• Parallel compressor control with model based Smart IT start
• Setpoint management ensuring safe and reliable operation
• Heat recovery management for tap water and space heating
• Support for external Air Conditioning unit KPI and COP calculation to compare and benchmark system eciency
• General purpose functions with Quick Application Selection for independent control functions
• Local and remote alarm management with readable text descriptions
• Built in RS485 Lon communication
• Suction pressure optimisation of for the most heavily loaded refrigeration area
• Injection ON: stop case regulation in case of serious compressor alarms in the rack
TM
Product specication
Technical data
Table 1: Technical data
© Danfoss | Climate Solutions | 2021.11 AI227786437213en-000401 | 2
Features
Description
Enclosure
Material
PC / ABS
Enclosure
IP10, VBG 4
Mounting
For mounting on wall or DIN rail
Weight with screw terminals
Modules in100- / 200- / controller series
Approx. 200 g / 500 g / 600 g
Type
Language
Code no.
AK-PC 782A
English, German, French, Italian, Dutch, Spanish, Portuguese, Danish, Finnish, Russian, Chech, Polish, Chinese
080Z0192
Type
Analog inputs
ON / OFF outputs
ON / OFF supply voltage (DI
signal)
Analog out‐
puts
Stepper out‐
puts
Module with
switches
Code no.
For sensors,
pressure
transmitters
Relay (SPDT)
Solid state
Low voltage
(max. 80 V)
High voltage
(max. 260 V)
0 – 10 V DC
For valves
with step con‐
trol
For override
of relay out‐
puts
Controller1144–––––
–
AK-XM 101A8–––––––
080Z0007
AK-XM 102A–––8––––
080Z0008
AK-XM 102B––––8–––
080Z0013
AK-XM 103A4––––4––
080Z0032
AK-XM 204A–8––––––
080Z0011
AK-XM 204B–8–––––x
080Z0018
AK-XM 205A88––––––
080Z0010
AK-XM 205B88–––––x
080Z0017
AK-XM 208C8–––––4–
080Z0023
Type
Description
Code no.
AK-ST 500
Software for operation of AK controllers
080Z0161
Type
Description
Code no.
EKA 163B
Display unit
084B8574
EKA 164B
Display unit with operation buttons
084B8575
MMIGRS2
Graphic display with operation
080G0294
Type
Description
Code no.
AK-CM 102
Communication modules for controllers where modules cannot be connected continuously
080Z0064
File name
Document type
Document topic
Approval authority
RU Д-DK.ГА02.В.05523
Electrical - Safety
Certicate
EMC/LVE
EAC
080R1221.01
Manufacturer Declaration
China RoHS
China
080R1228.1
Manufacturers Declaration
RoHS
Danfoss
080R1206.03
EU Declaration
EMCD/LVD/RoHS
Danfoss
Pack controller, type AK-PC 782A
Ordering
Table 2: Ordering - AK-PC 782A
Table 3: Ordering Accessory - Extension modules and survey for inputs and outputs
Table 4: Software
Table 5: Remote display
Table 6: Miscellaneous
Certicates, declarations, and approvals
The list contains all certicates, declarations, and approvals for this product type. Individual code number may have
some or all of these approvals, and certain local approvals may not appear on the list.
Some approvals may change over time. You can check the most current status at danfoss.com or contact your local
Danfoss representative if you have any questions.
Table 7: Certicates, declarations, and approvals
© Danfoss | Climate Solutions | 2021.11 AI227786437213en-000401 | 3
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