CVM-96 SERIES INSTRUCTION MANUAL
Contents
1. 16 Three phase apparent power 111 34 Value of power integrated during the programmed demand period 2 DEMAND PERIOD 1 to 60 Pd Per xx 3 CLEAR MAXIMUM VALUE IN MEMORY CLr Pd xx no or YES PROGRAMMING MODE max key allows choosing the different available options min key allows the validation of the blinking digit and go forward to the next digit only for the Pd Per xx option To pass to the next option press gt If you don t want to modify anything just press the key three times without modifying any value Supply network analyzer CVM 96 User s manual Page No 16 5 4 Initial screen setting This option allows choice among fixed or rotary screen a Fixed screen choice is switch just pressing lt choice among 10 available screen of the initial screen to be shown when the CVM 96 is powered or when the CVM 96 is reset b Rotary screens all 10 screens are successively shown at intervals of 5 s This option is noticed by means of some leds SET dEF PAGE The key max permits to modify the selected page The led of the selected option will be on Whether rotary screens option is selected then all leds will be on Press Tr to validate the choice 5 5 Clearing energy counters On display we see CLR ENER no Clear energy counters max To select YES or no gt To validate the choice and pass2. CIRCUTOR SUPPLY NETWORK ANALYZER CVM 96 SERIES Power Demand INSTRUCTION MANUAL 981 326 00B GB CIRCUTOR S A Supply network analyzer CVM 96 User s manual Page No 1 CVM 96 SUPPLY NETWORK ANALYZER USER S MANUAL CONTENTS page 1 DELIVERY SPOT CHECK tis Sss 2 2 MAIN FEATURES it prr Oo pa EE HERO POPSET 3 3 INSTALLATION AND START UP hte ertet ee t te e e een 5 3 T Installation 5 22r t Are e I E e nete olea a Ss hens ope er check 5 3 2 CVM 96 RS 485 Connection terninal see lable on the rear part 7 3 3 CVM 96 RS 232 Connection terninal see lable on the rear part 8 3 4 Connection drawing for the CVM 96 irssi iures nennen trennt treten treten 9 4 OPERATION MOBDB eene ltr E trecentis 11 5 SET UP PROCEDURE o IERI GERD ENDURO or 13 5 1 Phase to Phase or Phase to Neutral voltages 14 23 2 Current Transformer Primaty ael es e 14 5 3 Setting power demand utility screens eerte retener ener rentrer tne trennen 15 23 4 Initial screen setting aou bao aaa Dried 16 23 2 Clearing energy 16 25 6 THD ot D setting oer tette Dr PUE RU bees esie de
3. RS 485 GND Neutral measurement VL3 measurement VL2 measurement VL1 measurement NOTE 5 A current inputs are isolated for the ITF model User s manual Page No 8 3 3 CVM 96 RS 232 Connection terninal see lable on the rear part L2 L1 52 1 S2 S1 S2 51 T RELAY ALARM RL1 ju COM ER DP 13 16 17 18 52 51 82 51 52 51 e 7 Z Mu C ey ee NO Terminal description Upper connection terminal Relay RL1 output Relay RL2 output Relay common Current ALS S2 input Current ALS S1 input Current AL2 S2 input Current AL2 S1 input Current AL 1 S2 input Current AL 1 S2 input Lower connection terminal Supply voltage input 0 V Supply voltage input 230 V a c RS 232 Tx RS 232 Rx RS 232 GND Neutral measurement VL3 measurement VL2 measurement VL1 measurement Supply network analyzer CVM 96 User s manual Page No 3 4 Connection drawing for the CVM 96 a Three phase network 4 wires low voltage eile e 2 g 10 11 12 13 14 15 16 17 18 52 51 52 51 52 51 L3 L2 L1 123 45 6 7 8 9 VL1 VL2 VL3
4. Power supply see specifications on the rear part of the CVM 96 CVM 96 Single phase 230 V a c Voltage tolerance 10 15 96 Frequency 50 60 Hz 5 VA Operation temperature 10 to 50 C Measuring Circuits Rated voltage 300 V a c Phase to Neutral 520 V a c Phase to Phase Frequency 35 to 65 Hz Rated current In 5 A isolated inputs in the CVM 96 ITF model Permanent overload 1 2 In Current input burden 0 75 VA Accuracy Voltage EE CRT 0 5 96 of readout 2 digits 0 5 96 of readout 2 digits POWGIS on rcp RD ERE REG 1 0 96 of readout 2 digits Test conditions Errors due to C T are not included and direct voltage measurement Temperature between 5 and 45 Power factor between 0 5 and 1 Measured values between 5 100 Mechanical Characteristics Connection pluggable connection terminal Case material Self extinguishable VO plastic Protection Assembled unit frontal IP 54 Un assembled unit side and rear covers 31 Dimensions 96 x 96 mm depth 100 mm Weight 0 520 kg Supply network analyzer CVM 96 User s manual Page No 26 Relays characteristics according to model Maximum switching load 2500 VA Maximum switching voltage 400 V acc Maximum switching current 10 Mechanical endurance gt 3x10 oper
5. A C POWER SUPPLY Supply network analyzer CVM 96 User s manual Page No 10 b Three phase network 3 wires low voltage P2 L1 L2 L3 POWER SUPPLY J M M M bud 10 11 12 13 14 15 16 17 18 S2 S1 S2 51 52 S1 L3 L2 L1 123 4 5 6 7 8 9 C3 Ca YY VL2 VL3 IMPORTANT REMARK If power 0 01 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 Correct polarity Reverse the current transformer placed at this phase Supply network analyzer CVM 96 User s manual Page No 11 4 OPERATION MODE The instrument has three displays Each one has also a LED type indicators red colour Every led will be on according to the parameter presently shown in screen When the CVM 96 is powered up the display shows xxxx so informing about the program version and the set up After some seconds the analyzer is ready for operation and shows one of the available screens A led next to the shown parameter is on Parameters on display be switch by pressing the key Leds on the right or left indicate the parameters shown on screen at any moment When the first led red is on it means that VOLTAGE values are shown on screen that is the user can read t
6. When any protection failure is suspected to exist for example it presents external visible damages the instrument must be immediately powered off In this case contact a qualified service representative 3 1 Installation Before powering the instrument for the first time verify following points a Power supply see rear part of your CVM 96 Standard supply Single phase 230 V a c LJ On request other voltages Frequency 50 60 Hz Supply voltage tolerance 10 15 Connection terminal Terminals 1 2 Power supply Burden 5 VA b Maximum voltage at the voltage measuring circuit Standard 300 V a c phase to neutral 520 V a c phase to phase 35 to 65 Hz Other models on request CVM 96 measuring 500 V 500 V a c phase to neutral 866 V a c phase to phase Supply network analyzer CVM 96 User s manual Page No 6 c Maximum allowable current Current Transformer of In 5 A a c d Operation conditions Operation temperature range 10 to 50 C Humidity 5 to 95 R H non condensing e Safety Designed to meet protection class 300 as EN 61010 Mounting J Instrument is to be mounted on panel cut out 92 78 x 92 99 mm as 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 acces
7. PF Ill Supply network analyzer CVM 96 User s manual Page No 33 MODBUS REGISTERS PARAMETER Units HEXA DECIMAL longs PRESENT MAXIMUM MINIMUM Value Value Value Frequency L1 Hz Hz x 10 28 29 88 89 E8 E9 Line voltage L1 L2 V12 x10 2A 2B 8A 8B EA EB Line voltage L2 L3 V23 Vx 10 2C 2D 8C 8D EC ED Line voltage L3 L1 V31 Vx10 2E 2F 8E 8F EE EF THD 1 x 10 30 31 90 91 FO F1 THD V 2 x 10 32 33 92 93 F2 F3 THD x 10 34 35 94 95 F4 F5 THD 1 x 10 36 37 96 97 F6 F7 THD 2 x 10 38 39 98 99 F8 F9 THD 13 x 10 3A 3B 9A 9B FA FB Active energy kWh Wh 3C 3D 9C 9D FC FD Inductive reactive energy varLh 3E 3F 9E 9F FE FF kvarh L Capacitive reactive energy varCh 40 41 1 100 101 kvarh Three phase apparent kVA 42 43 A2 A3 102 103 power Power demand Pd 44 45 A4 A5 104 105 NOTE The maximum number of parameters 1 parameter 1 word of 32 bits that can be read in one transmission is 20 Supply network analyzer CVM 96 User s manual Page No 34 EXAMPLE INQUIRY 0A 04 00 00 00 0A 7176 ANSWER 04 14 00 00 08 4D 00 00 23 28 00 00 OF AO 00 00 00 90 00 00 00 60 CB 2E 04 00 00 00 0A 71 76 CVM 96 peripheral number 10 in decimal Reading function Initial address first register Number of registers to be read CRC character
8. 0 000 82 Minimum value b 3 Programming the delay OUT 1 RELAY 1 SEC Delay in seconds 0 000 2 maximum 9999 s THD parameters can also be selected as alarm conditions Press to pass to the next option the set up for the second relay is then shown RELAY 2 CODE 2 Parameter 1 Proceed as before Pressing again gt the set up option exited Supply network analyzer CVM 96 User s manual Page No 23 ALARM ACTIVATION Alarms operation depend on the set values of MAXIMUM and MINIMUM MIN MAX max gt min MIN MAX max lt min MAX max gt min max lt min 5 ON alarm activated gt relay closed OFF alarm deactivated gt relay open Supply network analyzer CVM 96 User s manual Page No 24 The DELAY set value is applied either to the connection or the disconnection when the alarm conditions occur User definable units for the different parameters are Parameter Format Voltage With decimals V 125 0 125 kV Without decimals kV 0220 220V 25 30 25 30 kV Powers kW kvarL kvarC 0 540 540W 250 5 250 5 kW Energies kvarlh kvarCh H3 Output relay connection lay out CVM 96 C2 2 relays RELAY 10 12 N O RELAY 11 12 2 Supply network analyzer CVM 96 User s manual Page No 25 6 SPECIFICATIONS
9. 04 14 00 00 08 4D 00 00 23 28 00 00 OF AO 00 00 00 90 00 00 00 60 CB 2E CVM 96 number 10 in decimal Reading function the one use for the inquiry Bytes received 20 V 1x10 register 00 Hex in decimal 212 5 V mA 1 in decimal 9000 mA W 1 in decimal 4000 W varL 1 in decimal 144 varL PF 1 x 100 in decimal 96 PF CRC character b Reading digital outputs relays Function 01 Inquiry Answer PP0100000008CRC PP peripheral No PP0101XXCRC Where XX hexadecimal byte gt translated to binary 57 b6 b5 b4 b3 b2 61 bO bit bO relay1 1 ON 0 OFF bit b1 relay2 1 ON 0 OFF Supply network analyzer CVM 96 User s manual Page No 35 11 APPENDIX A Second SET UP of the CVM 96 A second SET UP menu is accessible in order to perform the configuration of the CVM 96 with other features different from factory supplied ones To access this menu proceed as follows Being the CVM 96 powered off simultaneously press gt max and min keys Holding these keys pressed powered the CVM 96 on Following messages will be then shown on display a COMMUNICATION PROTOCOL MODBUS SET PROT Protocol BUS BUS MODBUS c BUS protocol See related section in this manual lt key to validate the choice and pass to the next set up screen b SETTING COMMUNICATION PARAMETERS SET Default configuration max key to switch
10. ations Energy alarms pulses 1 pulse At full load 250 V a c 10 A Electrical endurance 1x10 operations Maximum operation cadence 450 oper hour Safety Category III 300 V a c 520 a c as per EN 61010 Protection against electric shock by class double isolation Standards IEC 664 VDE 0110 UL 94 IEC 801 IEC 348 IEC 571 1 EN 50081 1 EN 50082 1 EN 61010 1 Dimensions 96 C 96 Ot Supply network analyzer CVM 96 User s manual Page No 27 7 SAFETY CONSIDERATIONS All installation specification described at the previous chapters named INSTALLATION AND STARTUP INSTALLATION MODES and SPECIFICATIONS 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 This instrument is factory shipped at proper operation condition 8 MAINTENANCE The CVM 96 does not require any special maintenance No adjustment maintenance or repairing action should be done over the instrument open and powered and should those actions are essential high qualified operators must perform them Before any adjustment replacement maintenance or repairing operation is carried out the instrument must be disconnected from any power supply source When any protection failure is suspected to exist the instrument must be immediatel
11. d set you will see on the three displays the voltages of the phases L1 L2 L3 U1 U12 U2 or U23 U3 U31 Phase to Neutral Voltages U1 U2 U3 Phase to Phase Voltages U12 023 031 a To select one of the voltage options just press the green key max and both options will appear alternately ha key to b When you get in the display the desired option just press the validate it and access to the next set up option 5 2 Current Transformer Primary SET A P and five digits appear on screen allowing us to set the primary of the current transformer SETA Pons To enter or modify the value of the C T s primary just repeatedly press max to increase the value of the blinking digit b When the value in screen is the required pass to the next digit by pressing min so that the whole value can be set Supply network analyzer CVM 96 User s manual Page No 15 c When the last digit blinks pressing then min the first digit is again accessed so that set value can be modified if required d To access next set up option press NOTES The maximum programmable value is 10 000 The secondary of the current transformers is not programmable It is automatically 5 A 5 A ac 5 3 Setting power demand utility screens Push the key gt and the following screens will appear by display 1 PARAMETER TO CONTROL Pd Code xx None None A 00
12. ep its safety conditions AN Before powering the instrument for the first time verify following points a Power supply see rear part of your CVM 96 Standard 230 V a c Single phase Frequency 50 60 Hz Other supply voltages on request b Maximum measuring voltage Standard 300 V a c phase neutral 520 V a c between phases Other models on request CVM 96 measuring 500V 500 V a c phase to neutral 866 V a c phase to phase c Maximum measurable current Current transformer of In 5 A a c Supply network analyzer CVM 96 User s manual Page No 3 2 MAIN FEATURES The CVM 96 power meter is a programmable measuring instrument offering several operation possibilities selectable in its SET UP option Before power supplying the instrument read the CONNECTIONS and SET UP sections and choose the most suitable operation mode for getting your desired data CIRCUTOR V A kW kvarL C THD PF energy The CVM 96 is an instrument which measures calculates and displays all the main electrical parameters at any electrical network balanced or not The measuring is true RMS value through three a c voltage inputs and three a c current inputs from Current Transformers 5A Supply network analyzer CVM 96 User s manual Page No 4 By means of an internal microprocessor it simultaneously measures Voltage phase neutral x x x Cu rre
13. from NO YES f YES is chosen the configuration is 001 9600 8 bits 1 bit f NO is chosen pressing 2 following options successively appear Peripheral No 001 to 255 Supply network analyzer CVM 96 User s manual Page No 36 Baud 1 baud rate 1 200 2 400 4 800 9 600 19 200 Parity No even odd LEN length 8 bits Stop bits 5 10r2 c SET UP LOCKING OR UNLOCKING SET Up pui Loc locked SET UP or Unloc unlocked SET UP Use the key max to modify the choice Whether LOC is set when the SET UP is accessed configuration parameters can be visualized but cannot be modified To modify the previously set option a 4 figure password is required to be entered in case that this password is not correct this blinks and the previous menu is again accessed PASSWORD 1234 To exit this set up mode the key RESET can be pressed at any moment WARNING whether the set up is exited by pressing the key RESET some last modification might not be saved in memory or reach the end of this set up mode
14. he voltage of the phase L1 V1 voltage of the phase L2 V2 and voltage of the phase L3 V3 Whether the key gt is press the next led will be on so indicating that for this screen CURRENT values of each phase are now shown Pressing again the key the next led will be on and the screen will shown following three parameters and so successively Supply network analyzer CVM 96 User s manual Page No 12 Max min Pressing the max or min key maximum or minimum values for the parameters being shown by display respectively appear in screen This function is only valid while you keep pressing the max or min key If you stop pressing the key the instantaneous values will appear again after 5 seconds While showing maximum or minimum values the LED indicators will keep blinking Pressing the reset key the system is reset This is equivalent to switch off the power supply of the instrument The maximum and minimum values recorded will be automatically deleted from the internal memory If you are in the set up process and press the reset key you exit it without saving any modification that you might have done this event will depend on the set up section that is accessed when the reset action is carried out and reset of the system occurs Supply network analyzer CVM 96 User s manual Page No 13 5 SET UP PROCEDURE The set up procedure of the CVM 96 is performed b
15. ing value and go to the next digit NOTE When the last digit is reached the position of the decimal can be move point with the max key Example for setting a 500 W 1 pulse Firstly we enter the value 0500 and following we place the decimal point at the right position with the max key 0 500 kW Supply network analyzer CVM 96 User s manual Page No 21 For accessing to the next option press set up options for the second relay will appear only with CVM 96 C2 RELAY 2 CODE 2 Parameter value 2 Act as before Pressing again gt the set up mode is exited b ALARM conditions 1 condition for each relay If any other parameter 1 to 30 is selected at 1 two outputs can be configured as alarms For each output it is possible to set Any of the parameters measured by the CVM 96 Q MAXIMUM value MINIMUM value Delay for the conditions These screens are successively displayed by the CVM 96 once the parameter has been selected for the set up of each option proceed as in the Section a b 1 Programming the maximum value to be controlled OUT 1 RELAY 1 AL hl 0 000 2 Maximum value The key max will increase the value of the blinking digit 0 1 9 sign Use the key min to pass to the following digit Supply network analyzer CVM 96 User s manual Page No 22 b 2 Programming the minimum value to be controlled RELAY 1 AL LO
16. llel Multi point bus per port used in the PC RS 232 type output RS 232 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 CVM 96 and the P C of 15 m Supply network analyzer CVM 96 User s manual Page No 29 10 2 RS 485 TYPE CONNECTION TO A RS 232 TYPE INPUT OF A PC RS 232 CONVERTER RS 232 RS 485 g RS 485 0000 000 000 000 Supply network analyzer CVM 96 Users manual Page No 30 10 3 RS 232 TYPE CONNECTION TO A RS 232 TYPE INPUT OF A PC DB 9 ooa Supply network analyzer CVM 96 User s manual Page No 31 10 4 MODBUS protocol The CVM 96 analyzer can communicate by means of the MODBUS protocol as it is following described When the CVM 96 communicates with MODBUS protocol it uses the RTU mode Remote Terminal Unit Each 8 bits byte in a message contains two 4 bits hexadecimal characters The format for each byte in RTU mode is Code 8 bits binary hexadecimal 0 9 A F Two hexadecimal characters contained in each 8 bits field of the message Bits per Byte 8 data bits Error Check Field Cyclical Redundancy Check CRC MODBUS FUNCTIONS FUNCTION 01 Reading of relay
17. nt Reece eee I e Reactive powerC x x x EI am s Fh i TIS Fh x x x VolageTHD MH THD V x x x Current THD THD A x x x Power factor PF x EU C Frequency MHz Powerdemand Pd energy kvarhC energy x e The CVM 96 delivers the visualization of above listed parameters by means of three 4 digit led type displays Up to 3 parameters can be simultaneously read in the screen Up to 10 screens are available to visualize all 30 measured parameters x x x x x OTHER FEATURES Low size 96 x 96 mm panel mounting analyzer True R M S measuring system Instantaneous maximum and minimum values of each measured parameter Energy measurement indication through a lighting led RS 485 or RS 232 type communication to a PC optional Harmonic distortion measurement THD V amp THD A Supply network analyzer CVM 96 User s manual Page No 5 3 INSTALLATION AND START UP 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 The instrument must not be powered and used until its definitive assembly on the cabinet s door Whether the instrument is not used as manufacturer s specifications the protection of the instrument can be damaged
18. obe 18 5 7 Additional screens when RELAY OUTPUTS 2 relays are 19 6 SPECIBICATIONS 3 err eter to eni d 25 7 SAFETY CONSIDERATIONS 5 2 25 As ttuien aoe A HER Eee Recette 27 8 MAINTENANCB thee te tee DR E E 27 9 TECHNICAL SERVICE per SERERE RR RR 27 10 CVM 96 COMMUNICATIONS wii irte Rt rh 28 10 1 To take into account aem Dette e ee ei tat POR EROR 28 10 2 RS 485 TYPE CONNECTION TO A RS 232 TYPE INPUT OF A 29 10 3 RS 232 TYPE CONNECTION TO A RS 232 TYPE INPUT OF A 30 10 4 MODBUS protocol 0 e etr o tee ep RERO RED EAR ERR RIT estes 31 Supply network analyzer CVM 96 User s manual Page No 2 1 DELIVERY SPOT CHECK This manual is issued to help all the CVM 96 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 correspond to your order specifications b Check if any damage was done during the shipment process c Verify that it includes the correct instruction manual AN The manual you hold in your hands contains information and warnings about the CVM 96 that the user should respect in order to guarantee a proper operation of all the instrument functions and ke
19. sing dangerous parts Therefore the instrument must not be used until this is completely installed The instrument must be connected to a power supply circuit protected with gl type IEC 269 or M type fuses rated between 0 5 and 2 A This circuit should be provided with a circuit breaker or any equivalent element to connect ON or disconnect OFF the instrument from the power supply network The supply and measuring voltage circuits will be both connected through a wire with a minimum cross section of 1 The line of the current transformer secondary will have a minimum cross section of 2 5 User s manual Page No 7 3 2 CVM 96 RS 485 Connection terninal see lable on the rear part L3 L2 L1 ALARM RELAY RL1 RL2 COM i l i 5 5 52 51 52 S1 52 51 eeeeeeeeeeg 10 11 12 13 14 15 16 17 18 S2 S1 S2 S1 S2 S1 gt RS485 S 0 amp 9 GND VL2 VL1 123 4 5 6 7 8 9 No L o Terminal description Upper connection terminal Relay 1 output Relay RL2 output Relay common Current AL3 S2 input Current ALS S1 input Current AL2 S2 input Current AL2 S1 input Current AL 1 S2 input Current AL 1 S2 input Lower connection terminal Supply voltage input 0 V Supply voltage input 230 V a c RS 485 RS 485
20. state FUNCTION 3 or 4 Reading of n Words 16 bits 2 bytes This function permits to read all the electrical parameters of the CVM 96 Each parameters is a 32 bits long hence two words are required to inquiry for a parameter 4 bytes XX XX XX XX User s manual Page No 32 a Registers assigned to different parameters measured by the CVM 96 MODBUS REGISTERS PARAMETER Units HEXA DECIMAL longs PRESENT MAXIMUM MINIMUM Value Value Value Phase voltage V 1 x10 00 01 60 61 0 1 Current 1 mA 02 03 62 63 C2 C3 Active power kW1 W 04 05 64 65 C4 C5 Reactive power kvar 1 var 06 07 66 67 C6 C7 Power factor PF1 P F x 100 08 09 68 69 C8 C9 Phase voltage V 2 V x10 0A 0B 6A 6B CA CB Current A 2 mA 0C 0D 6C 6D CC CD Active power kW2 W OE OF 6E 6F CE CF Reactive power kvar 2 var 10 11 70 71 00 01 Power factor PF2 P F x 100 12 13 72 73 D2 D3 Phase voltage 10 14 15 74 75 D4 D5 Current A 3 mA 16 17 76 77 D6 D7 Active power kW3 W 18 19 18 79 D8 D9 Reactive power kvar 3 var 1A 1B 7A 7B DA DB Power factor PF3 P F x 100 1C 1D 7C 7D DC DD Three phase active power W 1E 1F TE 7F DE DF kWIII Three phase inductive var 20 21 80 81 EO E1 power kvarL Three phase capacitive var 22 23 82 83 E2 E3 power Cos Ill Cos x 100 24 25 84 85 E4 E5 Three phase power factor P F x 100 26 27 86 87 E6 E7
21. to the following set up option Supply network analyzer CVM 96 User s manual Page No 17 Display If any of the energies is programmed kWh kvarhL or kvarhC it is displayed as follows Example If the accumulated energy is 32 534 810 kWh it will be displayed as follows MWh kWh Wh 2534 kWh 810 Wh Note the energy counter range is limited at 999 999 999 Wh that is when the value of 1 GWh is reached the counter is reset to zero Supply network analyzer CVM 96 User s manual Page No 18 5 6 THD or D setting SET SET DHAR or dHAR d Thd Two modes for the harmonic distortion calculation can be selected d 96 total value of the harmonic distortion referred to the fundamental value Thd 96 total value of the harmonic distortion referred to the R M S value The selected option will be the one shown on screen a To select any option just press max to switch between the two available options Press gt to validate the choice Since all set up options have been completed the set up is exited all modifications are saved in memory and the running mode automatically starts up Supply network analyzer CVM 96 User s manual Page No 19 5 7 Additional screens when RELAY OUTPUTS 2 relays are equipped With these outputs the CVM 96 C2 can be set to deliver A Pulse every certain kWh or kvarh ENERGY You can define the val
22. ue corresponding to the energy consumed for generating a pulse 0 5 s long kWh 1 pulse or kvarh 1 pulse B ALARM conditions the parameter to be controlled the maximum value the minimum value and the delay are user definable for each relay output On the CVM 96 screen following messages appear at this SET UP option OUT 1 RELAY 1 CODE Parameter 1 Depending on the selected variable we will pass to a or b sections IV In case that no parameter is wanted to be programmed set par No 00 phase L1 01 v2 Reactive power kvarL 1 04 Inductive Capacitive kvarC 1 Power factor 96 THD V THD Supply network analyzer CVM 96 User s manual Page No 20 Three phase active power kW 111 Three phase inductive power kvarL Three phase capacitive kvarC power Active energy Three phase cos Three phase power factor Frequency Hz 21 Ph Ph voltage 12 13 Ph Ph voltage L3 L1 Reactive energy inductive Reactive energy capacitive Three phase apparent power III Power demand Pd a If an ENERGY parameter is chosen kW h 31 kvarh L 32 or kvarh C 33 OUT 1 RELAY 1 PULS pe o 1 Value of energy in kW four digits with floating decimal point Set up procedure max key to modify the value of the blinking value Every time it is pressed the value is increased min key to validate the blink
23. y means of several SET UP options E For accessing the set up menu the keys max amp min must be simultaneously pressed once the instrument is at the main screen When accessing the SET UP the message SET UP unloc 1 is shown for some seconds on screen or otherwise the message SET UP loc 2 1 Set up UNLOC SET UP unlocked when the SET UP is accessed configuration parameters can be either visualized and modified 2 Set up LOC SET UP locked when the SET UP is accessed configuration parameters can be visualized but cannot be modified Once into the SET UP use the keyboard to select different options and enter required variables key lt validates de value and pass to the next menu The key MAX permits to select among different options in a menu or to increase a digit when a variable is being entered The key MIN permits to move the cursor along the digits Different options are following shown in a sequential mode 1 Choice of visualization of phase to neutral or phase to phase voltages 2 Value of the current transformer primary 1 a 10000 A 3 Choice of default initial screen 4 Deleting energy counters 5 Choice of harmonic distortion determination mode d or THD 6 Setting alarms RELAY 1 OUT 1 amp RELAY 2 OUT 2 Supply network analyzer CVM 96 User s manual Page No 14 5 1 Phase to Phase or Phase to Neutral voltages After the wor
24. y put our of service The instrument s design allow a quick replacement in case of any failure 9 TECHNICAL SERVICE For any inquiry about the instrument performance or whether any failure happens contact to CIRCUTOR s technical service CIRCUTOR S A After sales service c Lepanto 49 08223 TERRASSA Tel 34 93 745 29 00 fax 34 93 745 29 14 E mail central circutor es Supply network analyzer CVM 96 User s manual Page No 28 10 CVM 96 COMMUNICATIONS Don One or some CVM 96 can be connected to a P C With this system we can get all the parameters in one central point of reading The CVM 96 has a serial RS 485 or RS 232 type output according to the model If we connect more than one device to the same communication line RS 485 we have to assign to each of them a different code or direction from 01 to 99 since the P C needs the identification of every measuring point 10 1 take into account PROTOCOL MODBUS Question Answer CVM 96 DEFAULT CONFIGURATION 001 9 600 8bits N 1 bit Available baud rates 1 200 2 400 4 800 9 600 19 200 bauds RS 485 type output 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 CVM 96 and the last peripheral of 1 200 m The CVM 96 uses a RS 485 communication bus allowing up to a maximum of 32 devices in para
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