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Table of Contents
Related Manuals for Belimo NMV-D2M
Summary of Contents for Belimo NMV-D2M
- Page 1 3.5V 4. A1-PC-T V2.1 NMV-D2M 11.02.04/EN PC-Tool - Module NMV-D2M V2.1...
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Page 2: Applications
Product overview Functions Setting up Functional testing Please contact your local Belimo agent or representative for more infor- mation and the latest VAV documentation. All Belimo product documentation (in pdf format) can be downloaded from www.belimo.ch Overview Contents 3 - 4... -
Page 3: Table Of Contents
Applications ______________________________________________________________ N-A VAV-Compact NMV-D2M ......................N-A1 Customised versions .................. N-A1.1 Support for ....................N-A1.2 Communication links to the NMV-D2M ...................N-A2 Local connection via diagnostic socket............. N-A2.1 Direct connection to control cabinet or connection box......N-A2.2 Connection in a bus system............... N-A2.3 Module NMV-D2M: General ....................N-A3... - Page 4 Storage directory (path) N-S5.8.2 Read Test log (Trend Recall <F6>)............N-S5.9 Diagnosis ________________________________________________________________ N-P Index of recorded Test-Sequences..................N-P1 Miscellaneous _____________________________________________________________ N-M Function checks of the NMV-D2M................... N-M1 ‘Level 2’ function check................N-M1.1 ‘Level 3’ function check................N-M1.2 Formulae........................... N-M2...
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Page 5: Vav-Compact Nmv-D2M
N-A Applications N-A 1 VAV-Compact NMV-D2M The PC-Tool Module NMV-D2M has been designed specifically for the VAV-Compact NMV-D2M and its use in connection with CAV and VAV air boxes. N-A1.1 Customised versions Belimo VAV-Compact controllers are control devices that have been manufactured for specific customers and are produced individually for various air box manufacturers (OEMs). -
Page 6: Communication Links To The Nmv-D2M
VAV – Module NMV-D2M N-A2 Communication links to the NMV-D2M The NMV-D2M can be connected to a PC through a ZIP-RS232 or ZIP- 232-KA interface unit. There are various alternative types of cable (b and c) available from the ZKS-VAV cable sets for making on-site connections with the combination of the ZIP-RS232. -
Page 7: Direct Connection To Control Cabinet Or Connection Box
AC 24 V Cable from kit ZKS-VAV Duplicated NMV-D2M power supply ! The NMV-D2M must not have a duplicated power supply! When using this method of connection re- AC/DC 24 V move the AC 24 V plug from the ZIP-RS232 unit. -
Page 8: Module Nmv-D2M: General
VAV – Module NMV-D2M N-A3 Module NMV-D2M: General N-A3.1 Purpose Module NMV-D2M is used specifically for VAV air boxes to operate and assign parameters to the Belimo VAV-Compact NMV-D2M controller. The functions are shared between the two ‘Service’ and ‘Expert’ registers de- pending on the particular application. - Page 9 <CTRL> <P> ¦ NMV-D2M are printed out ¦ Print to file… Controller settings of active <CTRL> <shift> <P> ¦ NMV-D2M are stored in a text file ¦ Printer setting… Printer option ¦ Windows function ¦ End Close program <ALT> <F4>...
- Page 10 Buttons: See ‘Experts‘ and ‘Service‘ descriptions. N-A3.2.6 ‘Actuator symbol’ (data comparison) The large NMV-D2M symbol, above the buttons, shows the consistency of data between the connected NMV-D2M and the screen display. Screen data and NMV-D2M data do not agree: a) Read data not executed b) Screen data changed but Write data not executed Screen data and NMV-D2M data agree.
- Page 11 VAV – Module NMV-D2M N-A3.2.8 Status line The active program and the status of the NMV-D2M are indicated on this line. Duration of link Program status NMV-D2M status hh:mm:ss - Read data - Adaption / Synchronising active - Write data...
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Page 12: Print
/ Direction of rotation / Torque / Adaption and synchronisation N-A4.1.2 Print to file <Shift> <CTRL> <P> The data from the connected NMV-D2M xxx gets stored in a text file: The created text file name defaults to : - layout: NMV-D2M_serialnumber_date.TXT... -
Page 13: Addressing
For VAV, modulating control is effected with 0/2...10 V DC or, for CAV, by means of step control. The signal for the actual value of volumetric flow U5 is available at Terminal 5. An NMV-D2M set for bus mode (MP) can be reset for conventional control NMV-D2M by addressing for ‘PP’. -
Page 14: Reset To Oem Setting
- Activate ‘Manual addressing by acknowledgement’ - Press ‘OK’ - Press the manual disengagement push-button on the NMV-D2M. An appropriate signal is given if the setting of the address is successful. Repeat the procedure if a fault alarm is given. -
Page 15: Log Data Display
VAV – Module NMV-D2M N-A5 Log Data display <F3> Each read and write function is recorded in the NMV-D2M module in a monthly log file. User actions and controller settings that have been exe- Log Data display <F3> cuted from the appropriate PC can be displayed on the PC-Tool, and be printed out if necessary, without an active connection to the NMV-D2M. - Page 16 (zoom function) by clicking on or by pressing the <Space> key. Print: The data of a VAV-box equipped with an NMV-D2M can be printed out directly from the display screen mask for documentation purposes. Display screen mask (zoom function) - change entry: Click on <’...
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Page 17: Mode
VAV – Module NMV-D2M N-A5.3 File structure The log file contains the following columns: Column Description Explanation Column headings for log data window Date Date log entry Time / Date, when ? The preset programming language governs the language Time Time log entry "... - Page 18 N-A6 Trend Recall <F6> The Trend function is provided so that the control parameters of a VAV- / Trend Recall <F6> CAV-box equipped with a Belimo VAV-Compact NMV-D2M can be checked. An overall analysis of these values will show the system supply pressure, the dynamic behaviour of the air box and the control system (e.g.: room...
- Page 19 VAV – Module NMV-D2M N-A7 Project Data form <F4> This screen mask is used for entering project-specific and trend-specific data such as file names. The data is used by the log, print, trend and test Project Data form <F4> functions.
- Page 20 NMV-D2M password function – only for manufacturers. N-A8.1 Flow unit /h. The ‘Flow unit’ Volumetric flow data is stored in the NMV-D2M in m option allows the PC-Tool NMV-D2M Module display to be in m /h, l/s, cfm. N-A8.2 Label printer Label print option –...
- Page 21 VAV – Module NMV-D2M N-E Expert The ‘Expert’ register allows the manufacturer and experienced service engineers to make changes to specific NMV-D2M settings such as: Control signal Mode / Direction of rotation Adaption and synchronisation characteristics Display of NMV-D2M version data N-E1 Using the ‘Expert‘...
- Page 22 See 4. NMV-D2M Product Information for further information. - Connecting switches In order to allow the NMV-D2M to evaluate the status of a connected switch reliably the start point of the working range must be properly set first: Start point: DC 0.6 V...
- Page 23 Variable settings are displayed in this field or can be reset by 2 ... 10 / 0 ... 10 V settings. Variable settings are made in the field above. See 4. NMV-D2M Product Information for further information. N-E2.3 Direction of rotation, damper opening Depending on the design of the air box the manufacturer sets the direc- tion of rotation of the damper accordingly.
- Page 24 N-E4 Adaption With this function it is possible to acquire the positions of the upper and lower damper end-stops and store them in the NMV-D2M. Running time and working range are then adapted to the available angle of rotation. As-...
- Page 25 Reading the NMV-D2M operating data Testing the control and operating functions All relevant parameters of a VAV- / CAV-box equipped with a Belimo VAV-Compact NMV-D2M are displayed on a screen. The ‘Operation’ field and the operating options associated with it allow a wide range of test and monitoring functions to be employed.
- Page 26 Below you’ll find a chart showing the dependencies and influences. Display in ‚Trend View’ The example shows a Belimo VAV compact controller NMV-D2M (with 2 Pa creep flow suppression) with different V’Max settings: Adjustment...
- Page 27 N-S2.2 Operating time Number of hours that the NMV-D2M has been powered up. N-S2.3 Active time Number of hours that the NMV-D2M has been powered up and perform- ing mechanical movements. N-S2.4 Stop&Go ratio Ratio of active time to operating time (calculation = active time h...
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Page 28: Enable 'Operation
CAV air box with ‘Close’ override control. Active local override control – when the NMV-D2M module is also issuing an operating step – is indicated by means of a red square symbol: Override control / Operating steps... - Page 29 V'nom NMV-D2M controls the adjusted V’min value. Note: In case Bus mode: an additional sensor is connected (Bus mode only), the NMV-D2M follows Open to the 0...10 V voltage value of the sensor input [w]. [depends on supply pressure] - Close –...
- Page 30 N-S4 Trend The Trend function has been provided so that the control parameters of VAV / CAV-boxes equipped with a Belimo VAV-Compact NMV-D2M can be checked. A full analysis of these values provides information on the system supply pressure and the dynamic behaviour of the air box and its control system (e.g.: room temperature controller, DDC, step control).
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Page 31: Operating Steps
N-S4.2 Live trend The ‘LIVE TREND’ function requires an active communication link to the NMV-D2M controller. This function allows a VAV controller to be checked under real operating conditions or a setpoint of volumetric flow to be is- sued, both options showing the active control behaviour of the VAV / CAV-box to which it is connected. - Page 32 As a subdirectory of the PC-Tool program directory: ...\VAVTrend User-defined path: The user can select the destination directory in the ‘EXTRAS ¦ OP- TIONS... ¦ NMV-D2M’ menu. All trend files are then stored in that direc- Project Data form <F4> tory. This allows the project-specific and trend- specific data, such as file names, to be en- tered.
- Page 33 ‘Trend Recall’ start from toolbar: N-S4.3.1 Read Trend file The Trend window is opened from the ‘NMV-D2M ¦ Trend Recall’ menu <F6> or the toolbar. The ‘READ DATA’ button opens a browse window with access to all available drives. Default path: as set under ’EXTRAS ¦...
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Page 34: Trend File
The Tool is able to provide various Test- Test sequence: Sequences. They can be selected from the ‘EX- Step 1: V'max 120s TRAS ¦ OPTIONS ¦ NMV-D2M’ menu in the ‘Test- Step 2: V'min 120s Sequence – file selection’ field. See: N-S5.7 Selecting the Test-Sequences... -
Page 35: N-S5.1.1 'Test' - Diagnosis
The display of actual values (‘Operation’ field) is not available during the Test-Sequence. N-S5.6.1 Voltage display in ‘Live Trend’ The voltage display for ‘Setpoint NMV-D2M’ and ‘Actual volumetric flow’ is only available on the ‘Auto’ step during testing. The NMV-D2M must always be set for conventional applications: Address... - Page 36 VAV – Module NMV-D2M N-S5.7 Selecting the Test-Sequence In addition to the preset standard Basic Test-Sequence, a different se- quence can be selected if necessary. Depending on the functions to be tested there are Test-Sequences available with different steps and values of duration.
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Page 37: File Name
The user can select the destination directory in the menu If the trend function is used often a large ‘EXTRAS ¦ OPTIONS... ¦ NMV-D2M’. number of trend files will be accumulated. All trend files are then stored in that directory. -
Page 38: Index Of Recorded Test-Sequences
Plant sizing and rating See 4. NMV-D2M Product Information Control strategies for more information on function testing and NMV-D2M analysis options. Design-related differences between different makes of air box the examples shown here may differ from the records obtained from your plant. - Page 39 VAV – Module NMV-D2M NMV-D2M – Diagnosis N-P1.1 VAV-Box correct function ..........................Sequence a) - Step 1: V’max - Volumetric flow at setpoint - Damper in control range b) - Step 2: Auto [external control signal] - Actual value following setpoint - Damper in control range c) - Step 3: V’min...
- Page 40 VAV – Module NMV-D2M NMV-D2M – Diagnosis N-P1.3 VAV- / CAV-Box no system supply pressure ..................Sequence a) Test start ‘Check system supply pressure’ - System test: setpoint V’mid - Volumetric flow zero [m /h] / [l/s] - Damper 100% open...
- Page 41 VAV – Module NMV-D2M NMV-D2M – Diagnosis N-P1.5 VAV- / CAV-Box excessive system supply pressure ................. Sequence a) Step 1: V’max - Volumetric flow at setpoint - Damper control range ~42% b) Step 3: V’min - Volumetric flow at setpoint...
- Page 42 The spindle is fitted with clear offset in order to record this symptom. As a result different values of offset can occur on-site in this situation. Suggestion for a remedy Remove the NMV-D2M and match the closed position correctly to that of the closed damper blade.
- Page 43 Cause Legend - The external reference signal (DDC, room tempera- ture controller) has a working range of 0...10 V - The NMV-D2M is is set to 2...10 V mode Function: 0 V = Close 2...10 V = V’min...V’max Suitable Test-Sequences The NMV-D2M is closed completely by the 0 V sig- - Test 2 Max-Auto 6m.txt...
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Page 44: Miscellaneous
N-D Miscellaneous N-D1 Function checks of the NMV-D2M Detailed information on function checks for the NMV-D2M will be found in 4. NMV-D2M Product Information. Some extracts are described on the two following pages, the Level 2 and 3 function checks. -
Page 45: Level 3' Function Check
- connect PC Tool - correct the fault - select address of NMV- D2M to be tested Possible cause: The required NMV-D2M has a different address Activate 'Test' function (menu option 'Service') Test Reaction: - compare the Serial No. in... -
Page 46: Formulae
VAV – Module NMV-D2M N-D2 Formulae - Formulae for converting units /h -> l/s Volumetric flow [m /h -> cfm Volumetric flow [m 1.6990107955 l/s -> m Volumetric flow [l/s] l/s -> cfm Volumetric flow [l/s] 2.1188800033 cfm -> m Volumetric flow [cfm] 1.6990107955... - Page 47 VAV – Module NMV-D2M Notes...
- Page 48 VAV – Module NMV-D2M...