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Table of Contents
Related Manuals for Danfoss AK-PC 351
Summary of Contents for Danfoss AK-PC 351
- Page 1 User Guide Capacity Controller AK-PC 351 ADAP-KOOL® Refrigeration Control System...
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Page 2: Operation
The controller contains several languages. Select the preferred language at start-up. Data communication The controller has built-in Modbus data communication, and it can be connected to an AK-SM 800 type system device. User Guide RS8GZ302 © Danfoss 2015-06 AK-PC 351... -
Page 3: Suction Group
This contribution can raise or lower the reference, as determined by the momentary cooling need. Min. To limit the reference from values that are too high or too low, set a max. and min. limit. AK-PC 351 User Guide RS8GZ302 © Danfoss 2015-06... - Page 4 If controlling a media temperature, the control sensor must be set to S7. This temperature sensor must be located in the desired medium. High-pressure monitoring can occur with an external, high-pres- sure switch on DI8. User Guide RS8GZ302 © Danfoss 2015-06 AK-PC 351...
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Page 5: Safety Functions
On/off signal on a DI8 input If the input is used as general alarm input alarm text and delay times can be connected. Alarm and text will appear when the delay time has elapsed. AK-PC 351 User Guide RS8GZ302 © Danfoss 2015-06... -
Page 6: Display Overview
1 condenser group Both suction group and condenser group Parameters Access to the menus requires pass- word. Level 1: Only view (100) Level 2: Change values (200) Level 3: Change configuration (300). User Guide RS8GZ302 © Danfoss 2015-06 AK-PC 351... -
Page 7: Setup Overview
When the Plant type has been selected, it will al- low several settings to be made. For example: Continue to the next menus. All settings are explained on the pages that follow AK-PC 351 User Guide RS8GZ302 © Danfoss 2015-06... - Page 8 The total regulation reference can be read here Running capacity Here the connected capacity can be read as a % of total capacity Requested capacity Here the preferred connected capacity can be read as a % of total capacity User Guide RS8GZ302 © Danfoss 2015-06 AK-PC 351...
- Page 9 Select the regulating sensor for the suction circuit: AI-demand • Pressure transmitter Po - Ratiometric (AKS 32R), 1-5V (AKS 32), 0-20mA, 4-20mA (AKS 33) Po / S4 • Temperature sensor S4 (brine regulation). (Pt 1000 ohm) Fac: Po ratiometric AK-PC 351 User Guide RS8GZ302 © Danfoss 2015-06...
- Page 10 Minimum capacity in the time period (without a minimum capacity the compressor Fac: 10% will not be cooled) PWM start cycle For scroll Min: 10% Max: 60% Start capacity: the compressor will only start when the capacity requirement reaches Fac: 30% the value User Guide RS8GZ302 © Danfoss 2015-06 AK-PC 351...
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Page 11: Compressor Timers
Yes /No Fac: No compressor. No = Normal regulation Yes = Regulating is carried out without this compressor, and no alarms are generated by it. Comp.2..The same function for the remaining compressors AK-PC 351 User Guide RS8GZ302 © Danfoss 2015-06... - Page 12 • Fixed reference; the reference here will be the defined set point Setpoint / Floating • Variable reference; the reference here will follow the outside temperature, which is meas- Fac: Setpoint ured with Sc3. User Guide RS8GZ302 © Danfoss 2015-06 AK-PC 351...
- Page 13 When a sensor error has occurred, an O.K. signal must be registered within a specified Fac: 10 min. number of minutes before the controller resets the alarm. The regulation will be resumed as soon as the sensor signal is O.K. AK-PC 351 User Guide RS8GZ302 © Danfoss 2015-06...
- Page 14 Fac: 8E1 Reset to factory Return to factory settings If this function is set to “YES”, all settings will be returned to factory default settings, and the alarm list will be cleared. User Guide RS8GZ302 © Danfoss 2015-06 AK-PC 351...
- Page 15 In the event of an override, the function must first be changed to “Manual”, after which the output signal can be changed from 0-100%. Remember to switch to “Auto” when the override is to be completed. AK-PC 351 User Guide RS8GZ302 © Danfoss 2015-06...
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Page 16: Alarm Priorities
If you have corrected the sensor error and want to perform a manual, forced removal of the alarm, go to the “Alarm detail display” Press and hold the “X” key for 2 seconds here. User Guide RS8GZ302 © Danfoss 2015-06 AK-PC 351... - Page 17 The assignment of functions on the respective inputs and outputs can be regulated in “IO configuration”. Here is an example of 3 compressors and 2 fans: In this image you can see how many outputs and inputs your settings have provided. AK-PC 351 User Guide RS8GZ302 © Danfoss 2015-06...
- Page 18 1-5 V Modbus It is important that the installation of the data communication cable be done correctly. Cf. separate literature No. RC8AC. 0-20mA 4-20mA AKS 33 Remember termination at the bus termination. User Guide RS8GZ302 © Danfoss 2015-06 AK-PC 351...
- Page 19 The electronic expansion valves in the cooling appliances must be closed when all the compressors are prevented from starting. As a result, the evaporators will not be filled with fluid that can be led to a compressor when the regulation process restarts. The function can be prompted via data communication. AK-PC 351 User Guide RS8GZ302 © Danfoss 2015-06...
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Page 20: Mounting Dimensions
The relays cannot be used for the direct connection of capacitive loads such as LEDs and on/off control of EC motors. All loads with a switch mode power supply must be connected with a suitable con- tactor or similar. User Guide RS8GZ302 © Danfoss 2015-06 AK-PC 351... - Page 21 Ordering Type Function Operation Supply voltage Code no. AK-PC 351 Capacity controller With buttons and display 24 V 080G0289 AK-PC 351 User Guide RS8GZ302 © Danfoss 2015-06...
- Page 22 Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products already on order provided that such alternations can be made without subsequential changes being necessary in specifications already agreed.