Related Manuals for Danfoss AK-LM 350
Summary of Contents for Danfoss AK-LM 350
- Page 1 Design Guide Monitoring unit with COP calculation AK-LM 350 ADAP-KOOL® Refrigeration control systems...
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Page 2: Table Of Contents
CO 2 Booster HR ..................76 Ordering .....................38 CO 2 Booster HR Brine ................76 3. Mounting and wiring .............39 Cascade ......................77 Mounting ....................40 Single stage....................77 Mounting of extension module on the basic module ..40 Wiring ......................41 RS8GX102 © Danfoss 10-2013 AK-LM 350... -
Page 3: Introduction
1. Introduction Application AK-LM 350 is a complete monitoring unit with the option of regu- The COP calculation requires a 0-10 V signal that indicates how lation functions via relay switches. much of the compressor capacity is connected. The monitoring unit is used to detect temperature, pressure, This signal can be retrieved from the compressor controller, if it is functions etc. -
Page 4: Principles
• In addition to the software the top part is provided with connections for data communication and address setting. A regulation with few connections can If there are many connections one or more Examples be performed with the controller module extension modules have to be mounted alone RS8GX102 © Danfoss 10-2013 AK-LM 350... - Page 5 All users must be assigned a user profile which either gives access to full operation or gradually limits the operation to the lowest level that only allows you “to see”. AK-LM 350 RS8GX102 © Danfoss 10-2013...
- Page 6 If you want to know more about a current alarm you can click on it and obtain an information display on the screen. A corresponding display exists for all earlier alarms. Here you can upload information if you need further details about the alarm history. RS8GX102 © Danfoss 10-2013 AK-LM 350...
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Page 7: Design Of A Controller
If it is an application with many connections it will be necessary to use the controller module plus one or more extension modules. This section will give you a survey of possible connections plus assistance in selecting the modules required by your actual application. AK-LM 350 RS8GX102 © Danfoss 10-2013... -
Page 8: Module Survey
Controller with analog inputs and relay outputs. Top part The module with additional relay outputs is also available in a version where the top part is provided with change-over switches so that the relays can be overridden. RS8GX102 © Danfoss 10-2013 AK-LM 350... - Page 9 To be mounted in an AK controller Accessories Communication modules for controllers where modules cannot be connected continuously AK-CM 102 Communication module Data communication for external extension modules On the following pages there is data specific to each module. AK-LM 350 RS8GX102 © Danfoss 10-2013...
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Page 10: Common Data For Modules
UL file number: E166834 for XM modules UL 873, UL file number: E31024 for LM modules The mentioned data applies to all modules. If data is specific, this is mentioned together with the module in question. RS8GX102 © Danfoss 10-2013 AK-LM 350... - Page 11 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 an aggregate unit = n x 72 + 8 AK-LM 350 RS8GX102 © Danfoss 10-2013...
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Page 12: Controller
• Software status (slow flash = OK) • Communication with Service Tool • Communication on LON • Communication with AK-CM 102 • Alarm when LED flashes - 2 LED’s that are not used • “Service Pin” switch has been activated RS8GX102 © Danfoss 10-2013 AK-LM 350... - Page 13 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 AK-LM 350 RS8GX102 © Danfoss 10-2013...
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Page 14: Extension Module Ak-Xm 101A
5 V output or the 12 V output depending on transmitter type. Light-emitting diodes Only the two top LED’s are used. They indicate the following: • Voltage supply to the module • Communication with the controller is active (red = error) RS8GX102 © Danfoss 10-2013 AK-LM 350... - Page 15 7 - 8 Active at: Day/ Night 5 (AI 5) 17 - 18 Closed Door 6 (AI 6) 19 - 20 Open Defrost 7 (AI 7) 21 - 22 8 (AI 8) 23 - 24 AK-LM 350 RS8GX102 © Danfoss 10-2013...
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Page 16: Extension Module Ak-Xm 102A / Ak-Xm 102B
• Communication with the controller is active (red = error) Off: DI < 2 V a.c. Off: DI < 24 V a.c. • Status of the individual inputs 1 to 8 (when lit = voltage) RS8GX102 © Danfoss 10-2013 AK-LM 350... - Page 17 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 AK-LM 350 RS8GX102 © Danfoss 10-2013...
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Page 18: Extension Module Ak-Xm 204A / Ak-Xm 204B
Behind the upper part there is a fuse for each output. AC-1: max. 4 A (ohmic) must not be connected to the same output group AC-15: max. 3 A (Inductive) AK-XM 204B Override of relay RS8GX102 © Danfoss 10-2013 AK-LM 350... - Page 19 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 AK-LM 350 RS8GX102 © Danfoss 10-2013...
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Page 20: Extension Module Ak-Xm 205A / Ak-Xm 205B
AC-1: max. 4 A (ohmic) Behind the upper part there is a fuse for each output. must not be connected to AC-15: max. 3 A (Inductive) the same output group AK-XM 205B Override of relay RS8GX102 © Danfoss 10-2013 AK-LM 350... - Page 21 13 (DO 5) 37 - 36 - 39 Defrost Night 14 (DO6) 40 - 41 - 42 blinds Valves 15 (DO7) 43 - 44 - 45 Compres- sors 16 (DO8) 46 - 47 - 48 AK-LM 350 RS8GX102 © Danfoss 10-2013...
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Page 22: Extension Module Ak-Xm 107A
Extension module AK-XM 107A Function The module contains eight inputs for pulse counting. AK-LM 350 can detect signals from 8 pulse signals. As an alternative, the input can be used to register a signal for synchronising or an On/Off signal. (DI function). - Page 23 5 (CI 5) 9 - 10 - - - 6 (CI 6) 11 - 12 - - - 7 (CI 7) 13 - 14 - - - 8 (CI 8) 15 - 16 - - - AK-LM 350 RS8GX102 © Danfoss 10-2013...
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Page 24: Extension Module Ak-Ob 101A
The working life of the battery is several years – even if there are frequent power failures. An alarm is generated when the battery has to be replaced. After the alarm there are still several months of operating hours left in the battery. RS8GX102 © Danfoss 10-2013 AK-LM 350... -
Page 25: Transformer Module Ak-Ps 075 / 150
AK-PS 150 24 V d.c. 1.5 A 36 VA Dimension Connections Type High Width AK-PS 075 90 mm 36 mm AK-PS 150 90 mm 54 mm Supply to a controller AK-PS 075 AK-PS 150 AK-LM 350 RS8GX102 © Danfoss 10-2013... -
Page 26: Communication Module Ak-Cm 102
The controller should permanently be set to = ON. Warning Additional modules may only be installed following the installa- tion of the final module. (Here following module no. 11; see the sketch.) After configuration, the address must not be changed. RS8GX102 © Danfoss 10-2013 AK-LM 350... - Page 27 AK-LM 350 RS8GX102 © Danfoss 10-2013...
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Page 28: Preface To Design
Regulation can be started and stopped via the software. document. Literature no. RC8AC. Alarm function If the alarm is to be sent to a signal transmitter, a relay output will have to be used. RS8GX102 © Danfoss 10-2013 AK-LM 350... -
Page 29: Connections
✔ No more than five pressure transmitters may be connected to one controller module. data can be downloaded, and others where coupling with relays can be performed. ✔ No more than five pressure transmitters may be connected to one extension module. AK-LM 350 RS8GX102 © Danfoss 10-2013... -
Page 30: Design Of A Monitoring
9. The modules are linked together 10. The connection sites are established 11. Draw a connection diagram or a key diagram 12. Size of supply voltage/transformer Sketch Make a sketch of the system in question. RS8GX102 © Danfoss 10-2013 AK-LM 350... -
Page 31: Monitoring Unit
Read out of the consumption during the last week Read out of the total consumption since the last reset Alarm relay Number Priority "high" or priority "low to high" Miscellaneous Alarm priorities Sensor correction AK-LM 350 RS8GX102 © Danfoss 10-2013... -
Page 32: Connections
• Temperature readings cannot be shared. Data from this example is used on the next page. The result is that the following modules should be used: • AK-LM 350 Monitoring unit • AK-XM 101A extension module with analogue inputs RS8GX102 © Danfoss 10-2013... -
Page 33: Planning Table
___ pcs. á 5 VA = __ AK-XM 205A / B (8 analog inputs + 8 relay outp.) ___ pcs. á 5 VA = __ 1 pcs. á 8 VA = 8 Sum = Sum = max. 32 VA AK-LM 350 RS8GX102 © Danfoss 10-2013... -
Page 34: Length
DIN rail – no matter where in the row the module is found. Removal is likewise carried out with the two catches in the open position. RS8GX102 © Danfoss 10-2013 AK-LM 350... -
Page 35: Determine The Connection Points
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 AK-LM 350 RS8GX102 © Danfoss 10-2013... -
Page 36: Connection Diagram
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 connections. Example continued: RS8GX102 © Danfoss 10-2013 AK-LM 350... -
Page 37: Supply Voltage
Total ___ VA supply. The + and – 24V input must not be earthed. Example continued: Controller module 8 VA + 1 extension module in 100-series 2 VA ------ Transformer size (least) 10 VA AK-LM 350 RS8GX102 © Danfoss 10-2013... -
Page 38: Ordering
Real time clock with battery backup. To be mounted in an AK controller Accessories Communication modules for controllers where modules cannot be connected continuously 080Z0064 AK-CM 102 Communication module Data communication for external extension modules RS8GX102 © Danfoss 10-2013 AK-LM 350... -
Page 39: Mounting And Wiring
• 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 Monitoring unit • AK-XM 101A analog input module AK-LM 350 RS8GX102 © Danfoss 10-2013... -
Page 40: Mounting
DIN rail – regard- less of where the module is on the row. Disassembly is thus done with the two snap catches in the open posi- tion. RS8GX102 © Danfoss 10-2013 AK-LM 350... -
Page 41: Wiring
9 - 10 Ss LT Pt 1000 6 (AI 6) 11 - 12 Sd LT Pt 1000 7 (AI 7) 13 - 14 Cutin comp. capacity LT 0-10 V 8 (AI 8) 15 - 16 AK-LM 350 RS8GX102 © Danfoss 10-2013... - Page 42 Network installation When the controller is set correct on the network the LED "sta- tus" will flash quickly for 10 minutes. Status on output 1-8 6. The controller is now ready to be configured. RS8GX102 © Danfoss 10-2013 AK-LM 350...
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Page 43: Configuration And Operation
• 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 booster plant. The example is shown overleaf. AK-LM 350 RS8GX102 © Danfoss 10-2013... - Page 44 The example is the same 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.
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Page 45: Configuration
The red alarm bell at the bottom right tells you that there is an active alarm in the controller. In our case the alarm is due to the fact that the time in the controller has not yet been set. AK-LM 350 RS8GX102 © Danfoss 10-2013... -
Page 46: Authorization
SUPV and the the new access code relevant access code. You will access the login display by pressing the icon at the top left corner of the display. RS8GX102 © Danfoss 10-2013 AK-LM 350... -
Page 47: Unlock The Configuration Of The Controllers
On. Only when the main switch is set to Off, and regulation has therefore been stopped, is it possible to set the configuration lock. 4. Select Unlocked Select Unlocked AK-LM 350 RS8GX102 © Danfoss 10-2013... -
Page 48: System Setup
When the controller is connected to a net- work, date and time will automatically be set by the system unit in the network. This also applies to change-over Daylight saving. RS8GX102 © Danfoss 10-2013 AK-LM 350... -
Page 49: Set Plant Type
If an alarm relay is defined, it will activate an alarm that must be reset externally. Select quick setup You can reset all settings and return to factory settings here. AK-LM 350 RS8GX102 © Danfoss 10-2013... -
Page 50: Utility Meters
• Pulse per unit: The number of pulses to be received for each unit of measurement. • Scale factor: Any scale factor • Preset counter: Any reset (or other start value) of the display RS8GX102 © Danfoss 10-2013 AK-LM 350... -
Page 51: Thermostat Functions
• Indicate alarm text for the high alarm • Low alarm limit ow alarm limit Alarm delay low • Time delay for low alarm • Alarm text low Indicate alarm text for low alarm AK-LM 350 RS8GX102 © Danfoss 10-2013... -
Page 52: Voltage Controls
It is possible to reset or change the read-out. • Cyclus total Here the user can see how many times the alarm has occurred. It is possible to reset or change the read-out. RS8GX102 © Danfoss 10-2013 AK-LM 350... -
Page 53: Cop Calculation
The controller must know if the valve is sending gas through the heat exchanger, or if the gas is bypassing it. This should be done with an on/off signal. AK-LM 350 RS8GX102 © Danfoss 10-2013... -
Page 54: Configuration Of Inputs And Outputs
DIN 43864. All inputs are shown as DI1, DI2, etc. We will change this name to the respective functions. As such, DI1 will become Vtw (DI1), and DI2 will become Vhr (DI2). RS8GX102 © Danfoss 10-2013 AK-LM 350... - Page 55 The min. and max. values of the pressure interval must be set). Voltage signals: Voltage input 1 - 20 Setting: • 0 - 5 • 1 - 5 • 0 - 10 • 2 - 10 AK-LM 350 RS8GX102 © Danfoss 10-2013...
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Page 56: Set Alarm Priorities
Press the +-button to go on to the next page 4. Set alarm priorities for "Various" In our example we select the settings shown here in the display Press the +-button to go on to the next page RS8GX102 © Danfoss 10-2013 AK-LM 350... - Page 57 Configuration - continued 5. Set alarm priorities for General alarms There are no general alarm functions in our example. AK-LM 350 RS8GX102 © Danfoss 10-2013...
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Page 58: Check Of Settings
If, over a period of time, there are several invalid calculations, the system should be inspected for unstable operation. If the compressor regulation is performed by an AK-PC 772, and the “hot gas dump” function is activated, the COP calculation will not be correct. RS8GX102 © Danfoss 10-2013 AK-LM 350... - Page 59 • 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 AK-LM 350 RS8GX102 © Danfoss 10-2013...
- Page 60 • On time in % for the last 24 hours • Total On time in hours • Number of changes to On in the last 24 hours • Total number of changes to On RS8GX102 © Danfoss 10-2013 AK-LM 350...
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Page 61: Lock Configuration
The controller will now make a comparison of selected func- tions and define inputs and outputs. The result can be seen in the next section where the setup is controlled. AK-LM 350 RS8GX102 © Danfoss 10-2013... -
Page 62: Check Configuration
The problem is corrected by setting module number to 0 and point number to 0. Remember that the setup must be unlocked be- fore you can change module and point numbers. RS8GX102 © Danfoss 10-2013 AK-LM 350... -
Page 63: Check Of Connections
In our case we have no value. This may be due to the following: • The sensor has not been connected. • The sensor is short-circuited/interrupted • The point or module number has not been set up correctly. • The configuration is not locked. AK-LM 350 RS8GX102 © Danfoss 10-2013... -
Page 64: Installation In Network
The wiring has not been carried out correctly. The termination has not been carried out correctly. The data communication requirements are described in the document: ”Data communication connections to ADAP-KOOL® Refrigeration Con- trols” RC8AC. RS8GX102 © Danfoss 10-2013 AK-LM 350... -
Page 65: First Start Of Control
Please note that active plant alarms are automatically cancelled when the main switch is in pos. OFF. If active alarms appear when the control is started the reason for these should be found and remedied. AK-LM 350 RS8GX102 © Danfoss 10-2013... -
Page 66: Start The Control
2. Start control Press in the field against Main switch. Select ON. If the alarm relay is enabled, the alarm relay can be reset using this function. Remember to investigate where the alarm comes from. RS8GX102 © Danfoss 10-2013 AK-LM 350... -
Page 67: Setup Logs
Select a function here, then a parameter, and finish with OK. A LOG CAN ONLY BE DISPLAYED IF: Selection of parameters • THE CLOCK HAS BEEN SET AND • THE CONFIGURATION IS LOCKED AK-LM 350 RS8GX102 © Danfoss 10-2013... - Page 68 RS8GX102 © Danfoss 10-2013 AK-LM 350...
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Page 69: Regulating Functions
5. Regulating functions This section describes how the different functions work AK-LM 350 RS8GX102 © Danfoss 10-2013... -
Page 70: Monitoring Functions
• Delay time for 'high alarm' • Delay time 2 for 'high alarm' • Alarm text for 'high alarm' • Low alarm limit • Delay time for 'low alarm' • Alarm text for 'low alarm' RS8GX102 © Danfoss 10-2013 AK-LM 350... - Page 71 • Setting the cut-in value for relay + delay time for cut-in • High alarm limit • Delay time for 'high alarm' • Alarm text for 'high alarm' • Low alarm limit • Delay time for 'low alarm' • Alarm text for 'low alarm' AK-LM 350 RS8GX102 © Danfoss 10-2013...
- Page 72 Pressure read- consumption. ings can be retrieved from the other Danfoss controllers. Tem- perature readings must be obtained from separate sensors. The Measurement intervals for synchronisation are set jointly for all following measurements are required: energy meters.
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Page 73: Miscellaneous
The controller has a limited memory but as a rule of thumb, the 10 parameters can be saved, which are registered every 10 minutes for 2 days. Via AK-ST 500 one can subsequently read the historical values in the form of graph presentations. AK-LM 350 RS8GX102 © Danfoss 10-2013... - Page 74 When a user is created, the following must be stated: a) State a user name b) State a password c) Select user level d) Select units – either US (e.g. °F and PSI) or Danfoss SI (°C and Bar) e) Select language Installation considerations Access is given to four user levels.
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Page 75: Alarm Texts
The output in question has been put in manual control mode via the AK-ST 500 service tool software MAN DO……… The output in question has been put in manual control mode via the AK-ST 500 service tool software AK-LM 350 RS8GX102 © Danfoss 10-2013... -
Page 76: Appendix, Cop Signals
6. Appendix, COP signals CO 2 Booster CO 2 Booster HR Example requires: S = 8 pcs. P = 5 pcs CO 2 Booster HR Brine DI = 2 pcs. U = 2 pcs. RS8GX102 © Danfoss 10-2013 AK-LM 350... -
Page 77: Cascade
S = 9 pcs. P = 3 pcs. DI = 2 pcs. U = 2 pcs. Single stage Example requires: S = 4 pcs. P = 2 pcs. DI = 0 pcs. U = 1 pcs. AK-LM 350 RS8GX102 © Danfoss 10-2013... - Page 78 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.