----- Supply network analyzer CVMk and CVMk-ITF ------ Page Nº 3 BASIC INSTRUCTIONS 1.1. Delivery spot check This manual is issued to help all the CVMk users to install and use it in order get the best from it. After receiving the unit please check the following points: (a) Does this device corresponds to your order specifications? (b) Check if any damage was done during the shipment process.
----- Supply network analyzer CVMk and CVMk-ITF ------ Page Nº 4 MAIN CHARACTERISTICS The CVMk power meter is a programmable measuring instrument, offering several operation possibilities selectable in its SETUP option. Before power supplying the instrument, read the CONNECTIONS and SETUP sections and choose the most suitable operation mode for getting your desired data.
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----- Supply network analyzer CVMk and CVMk-ITF ------ Page Nº 5 and connecting the Energy + Clock module, besides: Parameter CVMk CVMk-4C Date/Time dd/mm/yy hh:mm:ss TIME TIME Active energy ( two indep. meters in case of kWh (+) and (--) the CVMk-4C: demanded energy (+) and generated energy (--) ) Reactive energy (inductive), two indep.
----- Supply network analyzer CVMk and CVMk-ITF ------ Page Nº 6 2.1. Other Characteristics Panel mounting instrument of low dimensions (144 x 144 mm). True RMS measurements. Memorizes Maximum and Minimum values. Autoscaling during data reading. Display : LCD or LEDs (check frontal cover) CVMk Displays of liquid crystal, 4 digits (LCD), dimensions: 67 x 26 mm CVMk-4C...
----- Supply network analyzer CVMk and CVMk-ITF ------ Page Nº 7 INSTALLATION AND STARTUP The manual you hold in your hands contains information and warnings that the user should respect in order to guarantee a proper operation of all the instrument functions and keep its safety conditions.
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----- Supply network analyzer CVMk and CVMk-ITF ------ Page Nº 8 a.2.- CVMk... / SDC : - Power supply Vdc (only for LCD display version) 24 V d.c. ( 20 V d.c..64 V d.c. ) 110 V d.c. ( 64 V d.c..130 V d.c. ) - Connection terminals : Terminals 1 - 2 - 3 .
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----- Supply network analyzer CVMk and CVMk-ITF ------ Page Nº 9 Mounting: Instrument is to be mounted on panel (cutout 138 x 138 mm, as per DIN 43 700). All connections keep inside the cabinet. Note that with the instrument powered on, the terminals could be dangerous to touching and cover opening actions or elements removal may allow accessing dangerous parts.
----- Supply network analyzer CVMk and CVMk-ITF ------ Page Nº 10 3.2. Connection terminal The CVMk has a connection terminal located at the side of the instrument to connect the power supply and the incoming network measuring signals. This connection terminal consists of: Standard CVM model = 12 terminals CVM - ITF model = 13 terminals* Termn.
----- Supply network analyzer CVMk and CVMk-ITF ------ Page Nº 11 3.3. Connection drawing for the Standard CVMk (12 terminal model - NON ITF) Connection diagram of the CVMk for a low voltage, three phase network. NOTE : FOR A HIGH VOLTAGE NETWORK IS ALWAYS ADVISABLE TO INSTALL THE CVM - ITF...
----- Supply network analyzer CVMk and CVMk-ITF ------ Page Nº 12 3.4. Connection drawing for the CVMk - ITF ( 13 terminal model - ITF ) a) Connection diagram of the CVMk-ITF for a low voltage, three phase network: IMPORTANT REMARK! If power = 0 is shown for any of the phases (codes 03, 09 and 15) and voltage and current are not zero for this phase, check out following points: - Assure that L1, L2 and L3 phases coincide in voltage and current.
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----- Supply network analyzer CVMk and CVMk-ITF ------ Page Nº 13 b.- CVMk-ITF: 3 current transformers + two voltage transformer :...
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----- Supply network analyzer CVMk and CVMk-ITF ------ Page Nº 14 c.- CVMk-ITF : Two current transformers + 2 voltage transformers. S2 of the current transformer grounded to earth...
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----- Supply network analyzer CVMk and CVMk-ITF ------ Page Nº 15 S1 of the current transformer grounded to earth...
When you switch on the power supply of the CVMk, all the 9 LED indicators will light on for some seconds, and you will see on the display : "Circutor xxxx" (program version) and following you will read "CARD TYPE xxxx" (identification of the connected module).
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----- Supply network analyzer CVMk and CVMk-ITF ------ Page Nº 17 Pressing the "max" key, the maximum values for the parameters being shown appear in the displays. This function is only valid while you keep pressing the "max" key. If you stop pressing the key the instantaneous values appear again.
----- Supply network analyzer CVMk and CVMk-ITF ------ Page Nº 18 SETUP To access into the setup menu just follow these steps: (a) Connect (supply) the instrument. (b) Press the two green buttons (max, min) simultaneously. You will see during a few seconds the word "set". It means that we are in the setup process.
----- Supply network analyzer CVMk and CVMk-ITF ------ Page Nº 19 5.2. Voltage Transformer Primary On the screen we read the word "SET U P" followed by 6 digits. They allow us setting the primary of the voltage transformer. SET U P - - - - - - Last digit of the first display indicates "U"...
----- Supply network analyzer CVMk and CVMk-ITF ------ Page Nº 20 5.3. Voltage Transformer Secondary We can now set the value of the secondary of the voltage transformer. Only three digits are available: SET U - - - Same process than in point 5.2: - "max"...
----- Supply network analyzer CVMk and CVMk-ITF ------ Page Nº 21 NOTES: - The maximum programmable value is 10.000 - The secondary of the current transformers is not programmable. It is automatically taken as 5 A (... / 5 A ac) 5.5.
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----- Supply network analyzer CVMk and CVMk-ITF ------ Page Nº 22 Parameter Symbol Code Symbol Code Symbol Code phase L1 phase L2 phase L3 Single voltage Current Active power kW 1 kW 2 kW 3 Inductive power kvarL 1 kvarL 2 kvarL 3 Capacitiva power kvarC 1...
----- Supply network analyzer CVMk and CVMk-ITF ------ Page Nº 23 5.6. First Page SETUP This option allows selecting among fixed or rotary page: a.- Fixed page (the page is changed pressing the "display" key): the page among the three available ones that we want to see when the CVMk is supplied (or a reset is made) can be selected.
----- Supply network analyzer CVMk and CVMk-ITF ------ Page Nº 24 5.7. Maximum power demand Push the key "display" and the following screens will appear by display: 1.- DEMAND PERIOD ( 1 to 60 min.) ("SET Per xx") 2.- PARAMETER TO CONTROL ("SET Pd xx") Three phase active power kW III...
----- Supply network analyzer CVMk and CVMk-ITF ------ Page Nº 25 OTHER SETUP SCREENS WITH THE CONNECTION OF THE ENERGY AND CLOCK MODULES 5.8. DATE / TIME SETUP Pressing the "display" key we will see in the CVMk.. screen the following: 1.- DAY : MONTH ("SET day dd:mm") 2.- YEAR...
----- Supply network analyzer CVMk and CVMk-ITF ------ Page Nº 26 5.9. Clearing energy counters On display we see "CLR ENER no" (Clear energy counters). - "max": To select "YES" or "no" - "display": To validate the selected option. Once finishing this option, all the modifications that we have done are saved in memory and the setup process is finished.
----- Supply network analyzer CVMk and CVMk-ITF ------ Page Nº 27 SPECIFICATIONS Power supply : see specifications on the rear part of the CVMk - CVMk... : Single phase 230 V a.c. or 400 V a.c. 240 V a.c. or 480 V a.c. 110 V a.c.
----- Supply network analyzer CVMk and CVMk-ITF ------ Page Nº 29 TECHNICAL SERVICE For any inquiry about the instrument performance or whether any failure happens, contact to CIRCUTOR’s technical service. CIRCUTOR S.A. - Aftersales Service Vial Sant Jordi, s/n 08232 - Viladecavalls - SPAIN...
----- Supply network analyzer CVMk and CVMk-ITF ------ Page Nº 30 10. MODULES : PCB based modules can be inserted into the rear of the CVMk. The standard modules are: Code Type Description Version 7 70 190 CVM / ER Energy Module card 6 7 70 191...
----- Supply network analyzer CVMk and CVMk-ITF ------ Page Nº 31 10.1. ADDITIONAL SCREEN WITH THE RELAY OUTPUT MODULES Relay modules: CVM-ERC-1 (1 relay ), CVM-ERC-2 ( 2 relays ), CVM-ERC420-1 ( 1 relay + 1 analog output) or the CVM-RED-C2 ( 2 outputs ). With this modules the CVMk - can be configured for: A.- Pulse every certain kW.h or kvar.h (ENERGY).
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----- Supply network analyzer CVMk and CVMk-ITF ------ Page Nº 32 a.- If an ENERGY parameter is chosen: 32, 33 or 34 OUT 1 RELAY 1 PULS xxxx kW / pulse (1) Value of energy in kW : four digits with floating decimal point - For programming: - "max"...
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----- Supply network analyzer CVMk and CVMk-ITF ------ Page Nº 33 b.- ALARM conditions (1 condition for each relay): If any other parameter (1 to 30) is selected in (1), two outputs can be configured as alarms. For each output it is possible to program: Any of the parameters measured by the CVMk MAXIMUM value...
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----- Supply network analyzer CVMk and CVMk-ITF ------ Page Nº 34 OUT 2 RELAY 2 CODE Parameter Nr. Proceed as before. Pressing again "display" we exit the setup option. --------------------------------------------------------------------------- ALARM ACTIVATION: The alarms depend on the programmed values of MAXIMUM and MINIMUM.
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----- Supply network analyzer CVMk and CVMk-ITF ------ Page Nº 35 The DELAY set value is applied either to the connection or the disconnection when the alarm conditions occur. The programming units for the different parameters are: Parameter Format Example Voltage Without decimals = V (xxxx)
----- Supply network analyzer CVMk and CVMk-ITF ------ Page Nº 36 10.2. ADDITIONAL SCREEN WITH THE 4 - 20 mA OUTPUT MODULES 20 mA output modules: CVM/ER420-1 (1 analog output), CVM/ER420-2 (2 analog outputs), CVM/ERC 420-1 (1 relay +1 analog output), CVM/RED-420 (communications + 1 4 -20 mA output).
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----- Supply network analyzer CVMk and CVMk-ITF ------ Page Nº 37 c.- Scale offset: Value of the parameter that we assign as the zero of the scale. dA 1 OUTPUT D/A Nr.1 Zero zero of the scale: x.xxx allows choosing the zero of the scale (four digits with floating decimal point) - "max"...
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----- Supply network analyzer CVMk and CVMk-ITF ------ Page Nº 38 - For passing to the next option, press "display": the setup for the second output will appear (only with a module type CVM/ER420-2 ). dA 2 OUTPUT D/A Nr.2 code xxxx Proceed as in the previous sections.
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----- Supply network analyzer CVMk and CVMk-ITF ------ Page Nº 39 Output of the power factor parameter ( P.F.): 0/4 mA ---------------------------- -------------------------20 mA +0.00 Ind. 1.00 Cap. – 0.00 3.- Default full scale: Parameter Condition Full scale ( 20 mA ) Voltages Primary <...
----- Supply network analyzer CVMk and CVMk-ITF ------ Page Nº 40 11. CVMk COMMUNICATIONS ---- One or some CVMk... can be connected to a computer. With this system we can get all the parameters in one central point of reading. The CVMk..., with the CVM/xx485 module, has a serial output type RS-485.
----- Supply network analyzer CVMk and CVMk-ITF ------ Page Nº 43 11.2.3. CVMk-... COMMANDS WITH THE ENERGY + CLOCK MODULE (*) negative energies only for the CVMk- 4C (four quadrants). COM.. CONCEPT QUESTION ANSWER UNIT $pp RWH ch Read active energy (positive, $pp 1 x 9 digits ch $pp 2 x 9 digits ch negative -...
----- Supply network analyzer CVMk and CVMk-ITF ------ Page Nº 47 11.4. DEFAULT CVMk CONFIGURATION : 00 / 9.600 / 7 bits / N / 1 bit - Available baud rates: 2.400 - 4.800 - 9.600 - 19.200 bauds - CVM / RS-485 module: DB-9 - Male connector Nr.
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----- Supply network analyzer CVMk and CVMk-ITF ------ Page Nº 48 - RS-485 COMMUNICATION LINK TO MULTIPLE DEVICES RS-485 connection will be carried out by means of a twisted and screened cable with a minimum of 3 wires, with a maximum distance between the CVMk and the last peripheral of 1.200 m.
----- Supply network analyzer CVMk and CVMk-ITF ------ Page Nº 49 12. APPENDIX 12.1. APPENDIX A: FOUR QUADRANTS OF THE CVMk-4C- Example of the phase difference Active power Reactive power P.F. between voltage kW or kW.h kvar or kvar.h and current 30º...
1.- COMMUNICATION PROTOCOL SETUP mode PROT Protocol: CIRC CIRCUTOR (CIRC) or MODBUS (BUS) protocol The "max" key allows the modification of this option. (*) To work with MODBUS see the APPENDIX F - "display" key: allows validating the selected option and pass to the next setup screen: 2.- Power units setup...
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----- Supply network analyzer CVMk and CVMk-ITF ------ Page Nº 51 - "display" key: allows validating the selected option and passing to the next setup screen: 3.- Communication parameters setup Cdef default configuration "max" key allows choosing NO / YES - If YES is chosen: the configuration is 00 / 9.600 / 7 bits / N / 1 bit - If NO is chosen, pressing "display"...
----- Supply network analyzer CVMk and CVMk-ITF ------ Page Nº 52 12.3. APPENDIX C : CVM-RED-C2 module ( Communications + 2 staticn outputs ) This module is equal to the CVM/RED module, with the addition of two outputs of free voltage contacts (Card type 0242). - DB- 9 OUTPUT: it corresponds to a CVM/RED module.
----- Supply network analyzer CVMk and CVMk-ITF ------ Page Nº 53 12.4. APPENDIX D : CVM-RED-420 module This module is equal to the CVM/RED, with the addition of a 4 - 20 mA analog output. (Card type 0251) - DB- 9 OUTPUT: it corresponds to a CVM/RED module. This module provides: a.- ENERGY ( kW.h , kvarh.L and kvarh.C ) b.- Main serial communication RS-485...
----- Supply network analyzer CVMk and CVMk-ITF ------ Page Nº 54 12.5. APPENDIX E : CVM-RED-MAX module With this module (Card type 0231 ) THREE billing periods can be controlled, each one with a meter of kW.h, kvarh.L, kvarh.C and maximum power demand: The CVMk has then a total of 9 METERS ( 18 meters for the four quadrants CVMk-4C ).
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----- Supply network analyzer CVMk and CVMk-ITF ------ Page Nº 55 Two additional screens appear in the CVMk when this module is connected: disc Billing period - Tariff type: Close connection terminal contacts (inp - HARDWARE option) or own clock (cloc - SOFTWARE option) SinC Synchronism with power demand controller...
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----- Supply network analyzer CVMk and CVMk-ITF ------ Page Nº 56 COMMUNICATIONS COMMANDS WITH THE CVM / RED-MAX MODULE (*) negative energies only for the CVMk- 4C (four quadrants). COM.. CONCEPT QUESTION ANSWER UNIT $pp RWHXn ch RWHXn Read active energy (positive, $pp a x 9 digits ch W.
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----- Supply network analyzer CVMk and CVMk-ITF ------ Page Nº 57 - MAXIMUM POWER DEMAND COMMANDS COM. CONCEPT QUESTION ANSWER CMDXn Delete maximum demand value pd=0 $pp CMDXn ch $pp ACK ch $pp RMDXn ch RMDXn Read maximum demand value: $pp 35 digits ch xx/xx/xx xx:xx:xx DATE, MAXIMUM (from the last reset),...
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----- Supply network analyzer CVMk and CVMk-ITF ------ Page Nº 61 Energy registers ( three tariffs ) : VARIABLE REGISTERS DECIMAL HEXADECIMAL DATE / HOUR * NOTE 1 TARIFF 200 - 201 C8 - C9 + Wh 202 - 203 CA - CB + varh L 204 - 205...
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----- Supply network analyzer CVMk and CVMk-ITF ------ Page Nº 62 EXAMPLE QUERY 0A 03 00 26 00 10 A4 B6 CVMk number, 10 in decimal Reading function 00 26 Starting address (first register ) 00 10 Number of registers for reading A4B6 CRC character RESPONSE...
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----- Supply network analyzer CVMk and CVMk-ITF ------ Page Nº 63 MODBUS SELECTION There are two ways for the change of the protocol (CIRBUS or MODBUS ) : a.- It is possible to access to a second MENU of SET-UP that allows the configuration of the CVMk : CIRBUS or MODBUS (*) see the APPENDIX B.
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