Danfoss AK-LM 350 User Manual Download

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Monitoring unit with

COP calculation

AK-LM 350

Design Guide

ADAP-KOOL

Refrigeration control systems

Summary of Contents for AK-LM 350

Page 1: ...Monitoring unit with COP calculation AK LM 350 Design Guide ADAP KOOL Refrigeration control systems...

Page 2: ...on points 35 Connection diagram 36 Supply voltage 37 Ordering 38 3 Mounting and wiring 39 Mounting 40 Mounting of extension module on the basic module 40 Wiring 41 4 Configuration and operation 43 Con...

Page 3: ...function Voltage monitoring with relay function On Off signals Detection of switch signals Alarm function with delay relay function if applicable The switch signal can be inverted Hour counter for On...

Page 4: ...irements are changed Flexible concept Controller series with common construction One principle many regulation uses modules are selected for the actual connection requirements The same modules are use...

Page 5: ...n and the condenser regulation At the bottom of the display there is access to a number of general functions such as overview manual operation log function alarms and service configuration Network lin...

Page 6: ...it The system unit has a larger memory and can contain more data If you are in a service situation you can show measurements in a trend function The measurements are then made real time and displayed...

Page 7: ...specific software and by which input and output signals the relevant application will require If it is an application with few connections the controller module top part with belonging bottom part ma...

Page 8: ...ction When a regulation is planned set up it will generate a need for a number of connections distributed on the mentioned types This connection must then be made on either the controller module or an...

Page 9: ...cable and AK controller AK RS 232 Cable between PC and AK controller AK USB Accessories Transformer module 230 V 115 V to 24 V AK PS 075 18 VA 24 V d c Supply for controller AK PS 150 36 VA 24 V d c A...

Page 10: ...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 cut in and out frequently e g rail he...

Page 11: ...10 2013 11 Dimensions The module dimension is 72 mm Modules in the 100 series consist of one module Modules in the 200 series consist of two modules Controllers consist of three modules The length of...

Page 12: ...r LON communication Address setting When the controller is connected to a gateway type AKA 245 the controller s address must be set between 1 and 119 If it is a system manager AK SM then 1 200 Service...

Page 13: ...I 10 23 24 11 AI 11 25 26 12 DO 1 31 32 13 DO 2 33 34 14 DO 3 35 36 15 DO 4 37 38 16 DO 5 39 40 41 17 DO6 42 43 44 18 DO7 45 46 47 19 DO8 48 49 50 Terminal 15 12 V Terminal 16 5 V Terminal 27 12 V Ter...

Page 14: ...pply voltage The supply voltage to the module comes from the previous module in the row Supply voltage to a pressure transmitter can be taken from either the 5 V output or the 12 V output depending on...

Page 15: ...KS 32 P AKS 32R AKs 2050 1 xx bar AKS 32 1 zz bar U V 0 5 V 0 10 V On Off Day Night Door Defrost Active at Closed Open Point 5 6 7 8 Type AI5 AI6 AI7 AI8 Point 1 2 3 4 Type AI1 AI2 AI3 AI4 Terminal 9...

Page 16: ...he module contains 8 inputs for on off voltage signals Signal AK XM 102A is for low voltage signals AK XM 102B is for high voltage signals Supply voltage The supply voltage to the module comes from th...

Page 17: ...1 2 2 DI 2 3 4 3 DI 3 5 6 4 DI 4 7 8 5 DI 5 9 10 6 DI 6 11 12 7 DI 7 13 14 8 DI 8 15 16 Point Signal Active at DI Day Night Door Defrost Closed voltage on Open voltage off Point 5 6 7 8 Type DI5 DI6...

Page 18: ...o override the relay s function Either to position OFF or ON In position Auto the controller carries out the control Light emitting diodes There are two rows with LED s They indicate the following Lef...

Page 19: ...t 1 DO 1 25 26 27 2 DO 2 28 29 30 3 DO 3 31 32 33 4 DO 4 34 35 36 5 DO 5 37 38 39 6 DO 6 40 41 42 7 DO 7 43 44 45 8 DO 8 46 47 48 Signal Active at DO Fan Alarm Light Rail heat Defrost Night blinds Val...

Page 20: ...ight change over switches at the front make it possible to override the relay s function Either to position OFF or ON In position Auto the controller carries out the control Light emitting diodes Ther...

Page 21: ...gnal type S Pt 1000 ohm 0 C S Pt 1000 P AKS 32R AKS 2050 AKS 32 P AKS 32R AKS 2050 1 xx bar AKS 32 1 zz bar U V 0 5 V 0 10 V On Off Day Night Door Defrost Active at Closed Open DO Fan Alarm Light Rail...

Page 22: ...g or an On Off signal DI function Supply voltage The supply voltage for the module comes from the previous mod ule in the sequence LEDs These indicate the following Voltage of the module Communication...

Page 23: ...Signal Module Point Terminal Active at 1 CI 1 1 2 2 CI 2 3 4 3 CI 3 5 6 4 CI 4 7 8 5 CI 5 9 10 6 CI 6 11 12 7 CI 7 13 14 8 CI 8 15 16 Point Point 5 6 7 8 Type CI5 CI6 CI7 CI8 Point 1 2 3 4 Type CI1 C...

Page 24: ...night change over Fixed defrost times Saving of alarm log in case of power failure Saving of temperature log in case of power failure Connection The module is provided with plug connection Placing Th...

Page 25: ...r controller Supply voltage 230 V a c or 115 V a c from 100 V a c to 240 V a c Placing On DIN rail Effect Type Output tension Output current Power AK PS 075 24 V d c 0 75 A 18 VA AK PS 150 24 V d c 1...

Page 26: ...The 24 V can be sourced from the same supply that supplies the controller The supply for the communication module is galvani cally separated from the connected extension modules The terminals must not...

Page 27: ...AK LM 350 RS8GX102 Danfoss 10 2013 27...

Page 28: ...hat the need for connections can be established Functions Clock function Clock function and change over between summer time and winter time are contained in the controller The clock is zeroset when th...

Page 29: ...ule s terminal board where there is both a 5 V supply and a 12 V supply When programming the pressure transmitter s pressure range must be set ON OFF voltage inputs DI This signal must be connected to...

Page 30: ...the controller module If not can they be obtained by changing an ON OFF input signal from voltage signal to contact signal or will an extension module be required 6 Decide which extension modules are...

Page 31: ...ut values for relay x Alarm limits and delay times x Voltage signal Number 5 Scaling of read out signal for ex 0 10 V 0 100 humidity x Cutin and Cutout values for relay x Alarm limits and delay times...

Page 32: ...ol and alarm functions DI1 DI20 Defrosting signals that are used to extend alarm delays for thermostats Appliance cleaning signal to stop alarms from the thermostat Signal to reset the alarm relay mut...

Page 33: ...Valve position 2 Pulse inputs Energy measurement 1 8 Synchronizing signal On off outputs Relays for thermostat functions 1 5 Relays for voltage signals 1 5 Relays for pressostat functions 1 5 Relays f...

Page 34: ...ed the controller will all the time check whether there is connection to the connected modules This status can be followed by the light emitting diode When the two catches for the DIN rail mounting ar...

Page 35: ...al type Active at 1 AI 1 1 2 2 AI 2 3 4 3 AI 3 5 6 4 AI 4 7 8 Mind the numbering The right hand part of the controller module may look like a separate module But it isn t Columns 1 2 3 and 5 are used...

Page 36: ...AK LM 350 11 Connection diagram Drawings of the individual modules may be ordered from Danfoss Format dwg and dxf You may then yourself write the module number in the circle and draw the individual co...

Page 37: ...The 24 V must not be shared by other controllers or units The analog inputs and outputs are not galvanically separated from the supply The and 24V input must not be earthed Transformer size The power...

Page 38: ...x 080Z0017 AK XM 107A 8 080Z0020 Type Function Application Code no Example continued Operation AK ST 500 Software for operation of AK controllers AK operation 080Z0161 x Cable between PC and AK contr...

Page 39: ...nting and wiring This section describes how the controller Is fitted Is connected We have decided to work on the basis of the example we went through previously i e the following modules AK LM 350 Mon...

Page 40: ...embly 2 Assemble the extension module and the basic module The basic module must not be connected to voltage When the two snap catches for the DIN rail mounting are in the open position the module can...

Page 41: ...11 25 26 AKS 2050 159 12 DO 1 31 32 13 DO 2 33 34 14 DO 3 35 36 15 DO 4 37 38 16 DO 5 39 40 41 17 DO6 42 43 44 18 DO7 45 46 47 19 DO8 48 49 50 24 25 Signal Module Point Terminal Signal type Active at...

Page 42: ...en the controller is set correct on the network the LED sta tus will flash quickly for 10 minutes 6 The controller is now ready to be configured Power Comm DO1 Status DO2 Service Tool DO3 LON DO4 I O...

Page 43: ...iguration and operation This section describes how the controller Is configured Is operated We have decided to work on the basis of the example we went through previously i e COP calculation on a CO2...

Page 44: ...as the one given in the Design section i e the controller is an AK LM 350 1 extension module Example COP calculation on a CO2 booster system with heat recovery Pressure readings can be retrieved from...

Page 45: ...w of it will always appear In this case the overview is empty This is because the controller has not yet been set up The red alarm bell at the bottom right tells you that there is an active alarm in t...

Page 46: ...or for the specific system and a corresponding access code for this person The controller will utilize the same language that is selected in the service tool but only if the controller contains this l...

Page 47: ...ock can be Unlocked Configuration lock The controller can only be fully configured when the configuration lock is set to Un locked The settings are only applied when it is set to Locked again At this...

Page 48: ...e that alarm text should be displayed in here Alarm text can be in a different language to the operating language Clock When the time is set the PC s time can be transferred to the controller When the...

Page 49: ...rgy readings Number of thermostats Number of pressostats Number of voltage signals Number of digital inputs COP calculation The controller will subsequently display what readings are required Alarm re...

Page 50: ...e factor Any scale factor Preset counter Any reset or other start value of the display We have not used this function in our example The image is included for guidance only Utility meters Configuratio...

Page 51: ...larm Pressostats The general pressostats can be used to monitor the pressure Abs pressure For each pressostat set readout Name Which of the sensors is used Actual pressure Pressure reading on the sens...

Page 52: ...mage is included for guidance only The name of the function may be xx and further down in the display the alarm texts may be entered 3 Voltage inputs The general volt inlet can be used to monitor exte...

Page 53: ...rigerant to CO2 for the three types of systems Set the current refrigerant for the two other systems The following refrigerants are possible R134a R170 R290 R404A R407C R410A R507 R600a R717 R744 R127...

Page 54: ...ts We set up the controller s digital input functions by keying in which module and point on this module each one of these has been con nected to We furthermore select for each output whether the func...

Page 55: ...Bar AKS 32 1 50 Bar AKS 32R 1 50 Bar AKS 2050 1 59 Bar AKS 2050 1 99 Bar AKS 2050 1 159 Bar User defined only ratio metric The min and max values of the pressure interval must be set Voltage signals V...

Page 56: ...ected Your choice of functions and settings has connected all the relevant alarms that are current They will be shown with text in the three pictures All alarms that can occur can be set for a given o...

Page 57: ...AK LM 350 RS8GX102 Danfoss 10 2013 57 5 Set alarm priorities for General alarms Configuration continued There are no general alarm functions in our example...

Page 58: ...pages the others are only displayed for orientation purposes A COP value should be as high as possible but it can never exceed the ideal value Left screen column 5 OK 0 or 1 The value indicates whethe...

Page 59: ...be connected Defrosting signal Signal on the DI input entails change to Delay Time 2 Alarm stop Signal on the DI input stops alarms 8 Move on to settings for pressostat 1 Check of settings contiuned T...

Page 60: ...s of the alarm is shown on the current alarm status line This status display is delayed with alarm delay for the input signal Signal history The level of the input is continuously recorded so that the...

Page 61: ...ison of selected func tions and define inputs and outputs The result can be seen in the next section where the setup is controlled Configuration continued Press in the field against Configuration lock...

Page 62: ...not exist The selected point number on the selected mod ule had been set up for something different The error is corrected by setting up the output correctly Remember that the setup must be unlocked...

Page 63: ...hecked whether the output has been correctly connected AUTO The output is controlled by the controller MAN OFF The output is forced to pos OFF MAN ON The output is forced to pos ON Activate the variou...

Page 64: ...row of the two other address switches must point at 0 2 Push the Service Pin Press down the service pin and keep it down until the Service Pin LED lights up 3 Wait for answer from the system unit Depe...

Page 65: ...remove cancelled alarms from the alarm list 5 Check active alarm again In our case we have a series of alarms We will tidy them up so that we only have those that are relevant In our case an active al...

Page 66: ...the blue manual control button at the bottom of the display 2 Start control First start of control continued Press in the field against Main switch Select ON If the alarm relay is enabled the alarm r...

Page 67: ...wer failure will stop the clock If you want to ensure that the clock is always set the controller must either be installed in a network together with a system unit or a battery module must be installe...

Page 68: ...68 RS8GX102 Danfoss 10 2013 AK LM 350...

Page 69: ...AK LM 350 RS8GX102 Danfoss 10 2013 69 5 Regulating functions This section describes how the different functions work...

Page 70: ...ns Name Sensor signal Display of the current reading Selection of relay function Setting the cut out value for relays Setting the cut in value for relays Selection of the input signal that changes to...

Page 71: ...the voltage readings V1 V2 V3 etc The following signals can be received 0 5 V 1 5 V 0 10 V 2 10 V A current signal can also be detected if external resistances are placed on the input so that the sign...

Page 72: ...igher the value the better If the COP value drops at a constant condenser temperature this is a sign that there are problems The COP can be used to compare systems of the same type The output values p...

Page 73: ...Interrupted results in no action Miscellaneous Alarm relay If the controller must give an alarm on a relay output the relay must be defined 2 relays can be defined One which is active at alarms with...

Page 74: ...Default user Access without use of password See daily settings and read outs 2 Daily Daily user Set selected functions and carry out acknowledgement of alarms 3 SERV Service user All settings in the m...

Page 75: ...larm The voltage signal has been above the high alarm limit for longer time than set delay DI X alarm input X 1 16 Medium DI X alarm Alarm on general alarm input DI x System alarms The alarm priority...

Page 76: ...76 RS8GX102 Danfoss 10 2013 AK LM 350 6 Appendix COP signals CO2 Booster CO2 Booster HR CO2 Booster HR Brine Example requires S 8 pcs P 5 pcs DI 2 pcs U 2 pcs...

Page 77: ...AK LM 350 RS8GX102 Danfoss 10 2013 77 Cascade Single stage Example requires S 9 pcs P 3 pcs DI 2 pcs U 2 pcs Example requires S 4 pcs P 2 pcs DI 0 pcs U 1 pcs...

Page 78: ...s 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 specificati...

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