CIRCUTOR CVM-MINI User Manual

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POWER ANALYZER

CVM-MINI SERIES

INSTRUCTION MANUAL

M98174001-01-05A

CIRCUTOR, SA

CONTENTS

1 BASIC INSTRUCTIONS............................................................................................................. 3

1.1 Checks on receipt. ....................................................................................................... 3

1.2 Main features ............................................................................................................... 3

1.3 Electrical parameters ................................................................................................... 3

1.4 Other features .............................................................................................................. 4

1.5 Available models .......................................................................................................... 4

2 INSTALLATION AND START-UP .............................................................................................. 5

2.1 Installation .................................................................................................................... 5

2.1.1 Power supply voltage............................................................................................... 5

2.1.2 Maximum voltage in the voltage measurement circuit ............................................ 5

2.1.3 Maximum permanent current in the current circuit .................................................. 5

2.1.4 Transistor output features........................................................................................ 5

2.1.5 Temperature probe features .................................................................................... 5

2.1.6 Operating conditions................................................................................................ 6

2.1.7 Safety....................................................................................................................... 6

2.2 Start-up ........................................................................................................................ 6

2.2.1 Description of terminals ........................................................................................... 6

2.2.2 Connection diagrams............................................................................................... 7

3 OPERATING MODE .................................................................................................................. 7

3.1 Keypad ......................................................................................................................... 8

3.2 Default settings ............................................................................................................ 8

3.2.1 Default display ......................................................................................................... 9

3.2.2 LED Indicators ....................................................................................................... 10

4 SETTING SET-UP.................................................................................................................... 10

4.1 Measurement Set-up ................................................................................................. 10

4.1.1 Transformation Ratios ........................................................................................... 11

4.1.1.1 Voltage primary value ................................................................................... 11

4.1.1.2 Voltage secondary value............................................................................... 11

4.1.1.3 Current primary value ................................................................................... 11

4.1.1.4 Current secondary value ............................................................................... 12

4.1.2 Measurement in 2 or 4 quadrants.......................................................................... 12

4.1.3 Power demand meter parameterisation ................................................................ 13

4.1.3.1 Integrated parameter .................................................................................... 13

4.1.3.2 Integration period .......................................................................................... 13

4.1.3.3 Clearing power demand meter value ............................................................ 14

4.1.4 Display and backlight............................................................................................. 14

4.1.4.1 Selection of screens to be displayed ............................................................ 14

4.1.4.2 Selection of start page .................................................................................. 14

4.1.4.3 Backlight (Backlit display) ............................................................................. 15

4.1.5 Clearing energy meter values................................................................................ 15

4.1.6 Setting THd or d..................................................................................................... 15

4.1.7 Digital output for the transistor (2) ......................................................................... 15

4.1.7.1 Impulse per n KW·h or Kvar·h consumed or generated ............................... 16

4.1.7.2 Alarm condition ............................................................................................. 16

4.2 Communication Set-up .............................................................................................. 19

4.2.1 Default settings ...................................................................................................... 19

4.2.2 Peripheral number ................................................................................................. 20

4.2.3 Transmission speed............................................................................................... 20

4.2.4 Parity...................................................................................................................... 20

4.2.5 Data bits................................................................................................................. 21

4.2.6 Protection of data Set-up using password............................................................. 21

5 APPENDIX – CVM-MINI-ITF-HAR-RS485-C2 SERIES .......................................................... 22

6 MODBUS RTU PROTOCOL .................................................................................................... 22

6.1 MODBUS memory map ............................................................................................. 23

6.2 RS485 Connection diagram ....................................................................................... 26

7 TECHNICAL SERVICE ............................................................................................................ 26

Page 2 of 26

1 BASIC INSTRUCTIONS

This manual is designed to familiarise the user with operating the CVM-MINI power analyzer in order to get the best from its features.

1.1 Checks on receipt.

Please check the following points on receipt of the analyzer:

• The equipment delivered matches your order specifications.

• Check that the equipment has not been damaged during delivery.

• Check that it has the correct instruction manual.

This manual contains information and warnings about the CVM-MINI analyzer which must be followed to guarantee the proper operation of all instrument functions and to maintain it in a safe condition. Installing and maintenance for this analyzer must be carried out by a qualified person.

1.2 Main features

The CVM-MINI panel analyzer is a programmable measuring instrument; it offers a series of options for using it, which may be selected from configuration menus on the instrument itself. Before starting the analyzer carefully read sections: power supply, connection and setting and select the most suitable form of operation in order to obtain the required data.

The CVM-MINI measures, calculates and displays the main electrical parameters for three-phase, balanced or unbalanced industrial systems. Measurements are taken in true effective value using the three alternating and neutral voltage inputs and three current inputs to measure I transformers.

/1A or IN /5A secondaries from external measurement

Figure 1. [CVM-MINI]

The CVM-MINI allows the display of all electrical parameters, using the backlit LCD display, showing three instant electrical parameters, maximum or minimum on each page jump.

1.3 Electrical parameters

By using its internal processor, the CVM-MINI shows on the screen and through communication (according to model), over 100 parameters, which may be either singlephase or three-phase. These parameters may or may not be displayed on the screen, according to the equipment’s preset values.

Page 3 of 26

PARAMETER UNIT L1 L2 L3 III

Phase-neutral voltage V f-n • • • Phase-phase voltage V f-f • • • Current A • • • •• Frequency Hz • Active power kW • • • • Reactive power L kvarL • • • • Reactive power C kvarC • • • • Apparent power kVA • • • • Power factor PF • • • • Cos ϕ Cos

•

Maximum demand Pd • • • • Neutral current IN • Voltage THD % THD - V • • • Current THD % THD - A • • • kWh (consumption and generation) W·h • kvarh.L (consumption and generation) W·h • kvarh.C (consumption and generation) W·h • kVAh (consumption and generation) W·h • Harmonic content (V and A) * % • • • 15th Temperature ºC •

( • ) Available through display and communications. ( •• ) Only available through communications. ( * ) Harmonic content in HAR model.

1.4 Other features

• A small sized instrument with a 85x52x70mm (3 steps).

• Measurement in true effective value (TRMS).

• Instant, maximum, minimum values for each parameter.

• Energy measurer function.

• 1 GW·h counter in consumed energy.

• 100 MW·h counter in generated energy.

• Backlit LCD display.

• Built in RS485 communications (Modbus RTU®).

• Temperature probe built in the equipment.

1.5 Available models

CODE REFERENCE

M52000 CVM-MINI-Shunt M52010 CVM-MINI-ITF M52021 CVM-MINI-ITF-RS485-C2 M52031 CVM-MINI-ITF-HAR-RS485-C2 M52022 CVM-MINI-ITF-Plus-RS485-C2

=cl] onil O?L+(**

Page 4 of 26

2 INSTALLATION AND START-UP

This manual contains information and warnings about the analyzer which must be followed to guarantee the proper operation of all instrument functions and to maintain it in a safe condition. The analyzer must not be switched on until it is finally connected to the electrical board.

If the equipment is handled in a way not specified by the manufacturer, the

When it is likely that the equipment has lost its protection (i.e. with visible damage), it must be disconnected from the auxiliary supply. In this event, contact a qualified technical service representative.

equipment's protection may be compromised.

2.1 Installation

The following features must be taken into consideration before supplying power to the equipment:

2.1.1 Power supply voltage

Standard model power supply: Single-phase 230 V AC. Plus model power supply: 85…265 V AC. / 95…300 V DC. Frequency: 50 Hz … 60 Hz Power supply tolerance: -15 % / +10% Connection terminals: 14 - 15 Equipment consumption: 3 VA

2.1.2 Maximum voltage in the voltage measurement circuit

Voltage: 300 V ∼ AC. phase-neutral

520 V ∼ AC. phase-phase

Frequency: 50 Hz … 60 Hz

2.1.3 Maximum permanent current in the current circuit

In scale IN /1A: 1.2 amperes In scale I

/5A: 6.0 amperes

2.1.4 Transistor output features

Type NPN transistor: Opto-insulated / Open Collector Maximum operating voltage: 24 V DC. Maximum operating current: 50 mA Maximum frequency: 5 impulses / second Impulse length: 100 ms

2.1.5 Temperature probe features

The CVM-MINI has a built in temperature sensor. The sensor has a ± 2ºC accuracy and a temperature measurement range of -10ºC +50ºC.

The interior temperature of the CVM-MINI has been estimated at 14.0 ºC above the interior of the cabinet where it has been installed, if the cabinet has no ventilation. If the cabinet has forced ventilation then the temperature of the CVM is 3.5 ºC higher.

Page 5 of 26

2.1.6 Operating conditions

Operating temperature: -10 ºC / +50ºC Relative humidity: 5 to 95 % RH (without condensation) Altitude: Up to 2000 metres

2.1.7 Safety

Designed for category III installations, 300 V ∼ AC (EN 61010). Class II double insulation against electric shock protection.

2.2 Start-up

The equipment is mounted on a DIN rail 46277 (EN 50022). All connections must remain inside the electrical board.

Note that when the instrument is switched on, the terminals may be dangerous

when touched and opening or removing parts may access dangerous areas.

Therefore, the equipment must not be used until it is properly installed.

The equipment must be connected to a power supply circuit protected with gl (IEC 269) or type M fuses between 0.5 and 2 A. It must have an overload/short circuit switch or equivalent device in order to disconnect the equipment from the power supply system. An earth leakage switch or similar device must be fitted to disconnect the equipment from the power supply system. The power supply circuit and the voltage measurement circuit are connected with a cable with a minimum diameter of 1 mm The secondary line for the current transformer shall have a minimum diameter of 2.5

2.2.1 Description of terminals

TERMINAL TERMINAL DESCRIPTION

1 Current input AL1 - S1 2 Current input AL1 - S2 3 Current input AL2 - S1 4 Current input AL2 - S2 5 Current input AL3 - S1 6 Current input AL3 - S2 7 Transistor output RL2 8 Common transistor output

9 Transistor output RL1 10 Measurement VL3 11 Measurement VL2 12 Measurement VL1 13 Neutral V measurement 14 Power supply voltage input 15 Power supply voltage input

A RS-485 (+)

S RS-485 (GND)

B RS-485 (-)

Page 6 of 26

Ali

tac

ionPower Supply

S2P2S1

P2S1P1

BaA

AbBaA

S2P2S1

Alim

tacionP

r Suppl

2.2.2 Connection diagrams

Figure 2. [4-wire / 3-wire - Low Voltage] Figure 3. [2 voltage transformers -

3 current transformers]

Figure 4. [2 voltage transformers -

2 current transformers]

3 OPERATING MODE

When power is supplied to the CVM-MINI, the equipment will start its software interface on the screen showing the version of the firmware and its setting. After a few seconds the equipment is ready to operate and shows all available screens. Once started the power analyzer will display the programmable electrical parameters via the measurement Set-up. If there is no previous setting, the analyzer will display the voltage between phase and neutral for L1, L12 and L1

THD

PF Pd

=cl] onil

2(2(2(2

O?L+(**

2(2(2(2

kvVAr=h

Figure 5. CVM-MINI

2(2(2(2(22

Figure 6. CVM-MINI display - LCD SEGMENTS

Page 7 of 26

clear

3.1 Keypad

The keypad comprises a total of seven silicon buttons which are used to set the equipment. Some buttons have a rapid access function, i.e. entering the Set Up interface is not required. Only the rapid access key needs to be pressed to run the function. Only three of the seven buttons may be pressed when the upper cover is down. This is because the remaining five keys have a high risk factor if they were to be accidentally pressed.

KEY FUNCTION

resetN

Nsetup

energy

max Pd

min

max

Starting the equipment and clearing maximum and minimum values for all instant parameters. Pressing the Reset key is equivalent to starting the equipment in the absence of voltage. Using a long press, after starting the equipment (in the absence of voltage, or after pressing the Reset key), Communication Set-up is accessed. Here the RS485 port parameters may be set and all communication and measurement parameters may be blocked using a password. Using a long press, after starting the equipment (runtime mode), Measurement Set-up is accessed. Each and every parameter for measurement may be changed. Rapid access function; using a long press (pressed for 5 seconds), all enabled energy counters are cleared (kW·h / kvarL·h / kvarC·h / kVA·h in power consumption or consumption and generation). Rapid access function; using a long press (pressed for 5 seconds), the Power demand parameter previously set in Measurement Set- up is cleared (Power demand) (kW III / kV·A III / A III / A ph). Displaying all electrical variables by repeated presses, in runtime mode. In Set-up mode has the function of advancing the setting screens. Pressing in runtime mode, displays the minimum value of displayed variable/s. In Set-up mode it has the function of moving 1 digit sideways. Pressing in runtime mode, maximum variable values are displayed. In Set-up mode it has the function of increasing 1 digit cyclically (from * to 3), or selecting between two possible preset configurations (for example: s_m or hi).

3.2 Default settings

The CVM-MINI Analyzer has a factory setting for display, communication and measurement. For this reason and due to the fact that this default setting is not valid in nearly all cases, the user must properly set-up the display, measurement and communication in accordance with the installation’s requirements.

Page 8 of 26

*(33*(33*(3

PdPF

{-23(/

{-3*(+

,,3(2

{,-*(+

L2 L3

3.2.1 Default display

{,,3(/

Figure 7. Phase-neutral voltage

{{{1(0

{{+.(+

K VAr

{{{1(0

Figure 11. Reactive power per

phase

THD

{{{0&.

{{{/(*

{{{.&3

Figure 15. % harmonic

distortion in current per phase

{{*(33 {-13&.

Figure 19. Cos ϕϕϕϕ III / Apparent

power III

K VA

{/*-&,

{/1*(3

{//*(2

Figure 9. Current per phase

Figure 8. Phase-phase voltage

{++1(3

{+--(.

K VA

{+,2(/

Figure 12. Apparent power per

{{*(33 {-11(3

Figure 16. PF III / Active power

{{30&,

phase

III

kvV

{{/*(* {{,.&0i=

Figure 20. Neutral current /

Frequency / Temperature

Figure 13. Power factor per

{{*(33 {{,3(,

Figure 17. PF III / Inductive

{-1/&/

Figure 21. Maximum demand

phase

K VArF

reactive power III

kvV

{++1&,

{+-,&/

{+,2&/

Figure 10. Active power per

{{{+(-

{{{+(*

Figure 14. % harmonic

distortion in voltage per phase

{{*(33 {{{{*

Figure 18. PF III / Capacitive

/,-.3(+

Figure 22. Imported / Consumed

kvV

phase

THD

K VAr=

reactive power III

kvV h

active energy

K VArFh

{+,.0(.

Figure 23. Imported / Consumed

inductive reactive energy

K VArFh

'+,.0(.

Figure 27. Exported / Generated

inductive reactive energy

{{,/-(,

Figure 24. Imported / Consumed

capacitive reactive energy

'{,/-(,

Figure 28. Exported / Generated

capacitive reactive energy

Page 9 of 26

K VAr=h

/,002(0

Figure 25. Imported / Consumed

apparent energy

',002(0

Figure 29. Exported / Generated

apparent energy

K VA h

,-.3(+-

Figure 26. Exported / Generated

active energy

kvV h

3.2.2 LED Indicators

The CVM-MINI power analyzer is supplied with two LED indicators which give information on the status of:

LED FUNCTION

CPU

The slow flashing of the LED CPU shows that the equipment has auxiliary power supply and is operative. The rapid flashing of the LED CPU shows that there is an internal problem with the start up software.

COMM

The slow flashing of the COMM LED shows that the equipment is communicating with a master peripheral via its RS485

communications port. The CVM-MINI

power analyzer’s

communications protocol is Modbus RTU.

4 SETTING SET-UP

The CVM-MINI power analyzer has two very different Set-up configurations which can set the parameters for all the measurement and communication settings.

Measurement set-up: All parameterisation of the equipment’s measurements are carried out from this menu; voltage display (phase-neutral or phase-phase voltages and current transformer ratios, setting the power demand meter, setting the start page, backlight setting, returning the energy counters to zero and maximum demand, type of harmonic distortion and setting the transistor outputs.

Communication set-up: All of the analyzer’s RS485 RTU Modbus communications are parameterised from this set-up menu. Also the option to enter a password to protect previous data settings in both Set-ups is possible from this menu.

4.1 Measurement Set-up

The measurement parameters for the CVM-MINI and all its functions are changed from this menu (according to type); it may start the eight energy meters and reset maximum demand (Pd), maximums and minimums recorded. The analyzer does not store the setting changes until all of the setting has been finished; the analyzer does not store the changes to the settings until the whole setting

program has been completed. If setting entered is not stored in the memory.

 To access MEASUREMENT Set-Up the SETUP key has to be pressed with a

long press with the equipment started until setting mode is entered.

On entering setting mode, the message "M?NOJ{ fi]", or as a default "M?NOJ{ ohfi" is displayed for a few seconds indicating that it is in setting and is informing of their status (locked or unlocked respectively).

M?NOJ{ohfi: on entering setting mode it is possible to view and change the setting. M?NOJ{fi]: on entering setting mode it is possible to view the parameterisation but

it is not possible to change it.

resetN

is pressed before the end of the setting, the

Page 10 of 26

4.1.1 Transformation Ratios

This menu accesses the voltage and current ratios and the voltage and current primary and secondary may be changed.

4.1.1.1 Voltage primary value

The display shows ”m_n{JlcO” followed by six digits; these allow the setting of the transformer voltage primary. To write or change the voltage transformer primary value, repeatedly press the

ma x

key increasing the value of the digit which is flashing at the time. When the required value is on the screen, move on to the following digit by pressing When the last digit has been changed, press digit, allowing the previously set values to be changed again. To enter the data

and access the next setting process, press .

min

, to change the remaining values.

min

to move back to the first

m_n JlcO *****+

Figure 30. Voltage primary ratio

4.1.1.2 Voltage secondary value

The display shows ”m_n{ M_]O” followed by three digits; these allow the setting of the transformer voltage secondary. To write or change the voltage transformer secondary value, repeatedly press

ma x

the When the required value is on the screen, move on to the following digit by pressing When the last digit has been changed, press digit, allowing the previously set values to be changed again. To enter the data

and access the next setting step, press

key increasing the value of the digit which is flashing at the time.

min

, to change the remaining values.

min

to move back to the first

m_n M_]O {{{**+

Figure 31. Secondary voltage ratio

4.1.1.3 Current primary value

The display shows ”m_n{JlC;” followed by five digits; these allow the setting of the transformer current primary. To write or change the current primary value, repeatedly press the increasing the value of the digit which is flashing at the time. When the required value is on the screen, move on to the following digit by pressing

min

, to change the remaining values.

Page 11 of 26

ma x

key

90º

Capacitive

When the last digit has been changed, press digit, allowing the previously set values to be changed again. To enter the data

and access the next setting step, press

min

to move back to the first

m_n jlc[ {****/

Figure 32. Current primary ratio

4.1.1.4 Current secondary value

Due to the fact that the CVM-MINI analyzer has a double scale for measuring the current secondary, the secondary to be measured by the analyzer must be set (I To select one of the two display measurement options, press the the two options will alternate. Once the required secondary of current has been

selected, press the

/1A or IN /5A).

key to enter the data and access the next setting step.

m_n M_][ {{{/

Figure 33. Current secondary value IN /5A Figure 34. Current secondary value IN /1A

m_n M_][ {{{+

ma x

key and

4.1.2 Measurement in 2 or 4 quadrants

The CVM-MINI power analyzer may measure in two quadrants (power consumption), or in four quadrants (power consumption and generation). If measurements are only to be taken in power consumption, the two quadrant option is recommended to avoid exported or generated energies being displayed (-kW·h / -kvarL·h / -kvarC·h / -kVA·h).

Capacitive

Inductive

180º

Inductive

0º

-90º

Page 12 of 26

To select one of the two display options (2 or 4 measurement quadrants), press

ma x

the selected, press the

key and the two options will alternate. Once the required option is

key to enter the data and access the next setting step.

m_n ko[^ {{{.

Figure 35. Measurement in 4 quadrants Figure 36. Measurement in 2 quadrants

m_n ko[^ {{{,

4.1.3 Power demand meter parameterisation

The

CVM-MINI

instant parameter. The amplitude of this window is preset by the integration time.

4.1.3.1 Integrated parameter

The display shows ” or variable to be integrated as Maximum Demand.

To select one of the four integration parameters available, press the and the four options will alternate in turn. Once the required option is selected,

press the key to enter the data and access the next setting step.

power demand meter is the integration in the time of a preset

J^{=i^_

” followed by two digits which identify the code

ma x

key

J^ =i^_ {{+0

Figure 37. Active power III

If “

J^{ =i^_{ **

meter will be deactivated.

4.1.3.2 Integration period

The Integration Period of the power demand meter may vary between a minimum of 1 minute up to a maximum of 60 minutes. To write or change the integration time value, repeatedly press the increasing the value of the digit which is flashing at the time. When the required value is on the screen, move on to the following digit by pressing When the last digit has been changed, press digit, allowing the previously set values to be changed again. To enter the data

and access the next setting step, press

min

J^ =i^_ {{-.

Figure 38. Apparent power III

” is selected, the instant integration of the power demand

, to allow the remaining values to be changed.

J^ =i^_ {{-0

Figure 39. Current III

min

J^ =i^_ ['jb

Figure 40. Current per phase

to move back to the first

ma x

key

Page 13 of 26

4.1.3.3 Clearing power demand meter value

To clear or save maximum demand, press the alternate. Once the required option is selected, press the

data and access the next setting step.

ma x

key and the two options will

key to enter the

=fl j^ hi

Figure 41. No-clearing power demand meter value Figure 42. Clearing power demand meter value

=fl j^ s_m

4.1.4 Display and backlight

4.1.4.1 Selection of screens to be displayed

Due to the fact that the default screens (as shown in section 3.2.1 Default display), the user has the option of setting a personalised display by selecting screens to be displayed.

The display shows as default “ pressed to proceed to the personalised display option. The analyzer will show

^_`{j[a_{hi

“ press Once the personalisation option has been entered, by using

screens shown in section 3.2.1 Default display will be displayed in turn. By using the

” respectively.

“

ma x

” on the screen; to enter the data and proceed to this setting,

button, the screen to be displayed is selected. Select “

CVM-MINI

power analyzer has a large number of

^_`{ j[a_{ s_m

”; the

ma x

key has to be

key the

s_m

” or

4.1.4.2 Selection of start page

In order to select the equipment’s preferred start up screen, repeatedly press

ma x

the is selected, press the

step.

key up to display the screen to be selected. Once the required option

key to enter the data and access the next setting

{m_n

{chcn

{j[a_

Figure 43. Select preferred page

Rotating function: Using the rotating display function, the Power analyzer automatically displays every available screen for five seconds each.

The parameters are flashing at the same time.

must be used to enter the rotating display function when all electrical

Page 14 of 26

4.1.4.3 Backlight (Backlit display)

The time in which the back lighting will be on after the last use is set by using the keypad in this menu. The display is permanently on if

is set.

4.1.5 Clearing energy meter values

Clearing energy meters refers to the four consumed or imported energy meters. To select clear these meters of

alternate. Once the required option is selected, press the data and access the next setting step.

kw·h

, press the

ma x

key and the two options will

key to enter the

{]fl {_h_l {hi

Figure 44. No-clearing energy meters Figure 45. Clearing energy meters

{]fl {_h_l {s_m

4.1.6 Setting THd or d

Harmonic distortion rate

options: the effective value or the fundamental value. To select one of the two calculation options, press the

options will alternate. Once the required option is selected, press the enter the data and access the next setting step.

{m_n {B;L {NB>

Figure 46. Harmonic distortion value for the

effective value (RMS)

measurements may be made using two measurement

ma x

key and the two

{m_n {B;L {>

Figure 47. Harmonic distortion value for the

fundamental value

key to

4.1.7 Digital output for the transistor (2)

Two types of setting may be made using the outputs:

•

Impulse per n or generated may be set to generate an impulse.

•

Alarm condition: associates a parameter to a digital output, setting a maximum, minimum and delay (

In the event that no condition needs to be set, the using the

key.

kW·h

kvar·h

Page 15 of 26

(Energy): the value for the energy consumed

delay

) for the trip condition.

CVM-MINI’s

code is typed and entered

digital transistor

4.1.7.1 Impulse per n KW·h or Kvar·h consumed or generated

In order to generate an impulse for consumed used has to be selected:

PARAMETER SYMBOL CODE

Active energy III Inductive reactive energy III Capacitive reactive energy III Apparent energy III Active energy generated III Inductive reactive energy generated III Capacitive reactive energy generated III Apparent energy generated III

Once the energy code has been selected and entered using the key, the watts·time per impulse is entered or as a default, kilowatts·time per impulse.

For entering the watts·time rate per impulse, repeatedly press the increasing the value of the digit which is flashing at the time. When the required value is on the screen, move on to the following digit by pressing When the last digit has been changed, press digit, allowing the previously set values to be changed again. To enter the data

and access the next setting step, press

min

, to allow the remaining values to be changed.

n kW·h

, the energy meter to be

kW·h III

KvarL·h III

KvarC·h III

kVA·h III

kW·h III (-)

KvarL·h III (-)

KvarC·h III (-)

kVA·h III (-)

min

to move back to the first

31 32 33 44 45 46 47 48

ma x

key

{Ion+ {Jofm {***(***

Figure 48. Watts / impulse

4.1.7.2 Alarm condition

In order to link an alarm condition to an energy parameter, the code for the selected parameter has to be entered. A list of electrical parameters and their codes is shown below.

Page 16 of 26

PARAMETER PHASE SYMBOL CODE

Phase-neutral voltage L1 Current L1 Active power L1 Reactive power L/C L1 Apparent power L1 Power factor L1 % THD V L1 % THD A L1 Phase-neutral voltage L2 Current L2 Active power L2 Reactive power L/C L2 Apparent power L2 Power factor L2 % THD V L2 % THD A L2 Phase-neutral voltage L3 Current L3 Active power L3 Reactive power L/C L3 Apparent power L3 Power factor L3 % THD V L3 % THD A L3 Temperature -

V 1 A 1

kW 1

KvarL/C 1

kV·A

PF 1 THD V1 THD A1

V 2 A 2

kW 2

KvarL/C 2

kV·A

PF 2 THD V2 THD A2

V 3 A 3

kW 3

KvarL/C 3

kV·A

PF 3 THD V3 THD A3

ºC

01 02 03 04 38 05 25 28 06 07 08 09 39 10 26 29 11 12 13 14 40 15 27 30 41

PARAMETER SYMBOL CODE PARAMETER SYMBOL CODE

Active power III Inductive power III Capacitive power III Active energy Inductive reactive energy Capacit. reactive energy Apparent power III Maximum demand Current III Neutral current

* Variables only valid if the Maximum Demand for current has been set per phase.

There are also some codes which refer to the three-phases at the same time (Function OR). If one of these variables has been selected, the alarm will go off when any of the three-phases, or all three at the same time, match the preset conditions.

kW III kvarL III kvarC III

kW·h

Kvarh·L

Kvarh·C

kV·A III

Md (Pd)

AIII

16 17 Power factor III 18 Frequency 31 L1- L2 Voltage 32 L2- L3 Voltage 33 L3- L1 Voltage 34 Temperature 35 Maximum demand L1 36 Maximum demand L2 37 Maximum demand L3

cos

three-phase

cos ϕ

PF III

Hz V 12 V 23 V 31

ºC

Md (Pd) Md (Pd) Md (Pd)

19 20 21 22 23 24

41 35* 42* 43*

Page 17 of 26

PARAMETER SYMBOL CODE

Phase-neutral voltage Current Active power Reactive power Apparent power Power factor Phase-phase voltage % THD V % THD I

Once the Alarm Condition code has been selected and the data entered using the

(hysteresis) for the alarm condition must be entered.

For entering the maximum, minimum and hysteresis values, repeatedly press the When the required value is on the screen, move on to the following digit by pressing When the last digit has been changed, press digit, allowing the previously set values to be changed again. In order to enter

one of the pieces of data, press the press the

key, the

ma x

key increasing the value of the digit which is flashing at the time.

min

maximum value, minimum value

, to allow the remaining values to be changed.

key entering the data and ending the setting.

V1 / V2 / V3 A1 / A2 / A3

kW1 / kW2 / kW3

Kvar1 / kvar2 / kvar3

kV·A1 / kV·A2 / kV·A3

PF1 / PF2 / PF3

V12 / V23 / V31 Thd1 / Thd2 / Thd3 V Thd1 / Thd2 / Thd3 A

and the

min

to move back to the first

key. Once the delay has been set,

delay

90 91 92 93 98 94 95 96 97

in seconds

{Ion+ {BC {***(*

Figure 49. Maximum value

Setting the number 2 digital output is shown on the display as “ must be set by using the settings shown below.

MIN +

MIN -- MAX +

MIN + MAX --

MIN --

Activating the outputs of the programmable values as Maximums and Minimums.

MAX + max > min

MAX + max < min

MAX -max > min

MAX -max < min

{Ion+ {fi {***(*

Figure 50. Minimum value

ON OFF ON ====== 0 Min Max OFF ON OFF ============== 0 Max Min ON OFF ON ======= Min 0 Max OFF ON OFF ============= Max 0 Min ON OFF ON ===== Min Max 0 OFF ON OFF ================ Max Min 0

{Ion+ {^_f[ {****

Figure 51. Hysteresis / Delay

Ion{,

”. This

Page 18 of 26

4.2 Communication Set-up

One or more to automate a production process or an energy control system. As well as the usual operation of each instrument, this system may centralize data at one single point; for this reason the If more than one instrument is connected to one single series line (RS-485), it is necessary to assign to each a number or address (from 01 to 255) so that the central computer or PLC sends the appropriate requests to these addresses for each peripheral.

From communication displayed and/or changed; this may match these parameters to the requirements of the system topologies and/or applications. The analyzer does not store the setting changes until all of the setting has been finished. If it is the memory.



To access the COMMUNICATION Set-up, first press the

On entering setting mode the message " informing the user that the equipment has entered communications display or setting mode.

CVM-MINI

Reset

immediately press the

instruments may be connected to a computer or PLC in order

has an RS-485 communication output.

Set-up

before the end of the setting, the setting entered is not stored in

, the

Set-up

CVM-MINI

key for a long time to enter a setting.

's communication parameters may be

Reset

M?NOJ{chc]

" appears for a few seconds,

key and

{m_n {jlin {\om

Figure 52. Protocol information

Using this information screen, the equipment is informing the user that the Communication protocol via the RS-385 series port is standard MODBUS©.

To enter setting mode, press the

4.2.1 Default settings

This menu option allows the automatic selection of a predefined communication parameter; the default preset parameters are: Peripheral number 1, speed 9,600 bps, parity NO, data bits 8 and stop bit 1.

If a different preset communication setting is not required, “ selected.

To select one of the two options, just press the alternate. Once the required option is selected, press the

data and access the next setting step.

key.

” should be

ma x

key and the two options will

key to enter the

Page 19 of 26

{m_n {=^_` {hi

Figure 53. Non-standard communication

parameters

{m_n {=^_` {s_m

Figure 54. Predefined communication

parameters

4.2.2 Peripheral number

The peripheral number varies between 0 and 255 (0 and FF in hexadecimal). To write or change the number of the peripheral, repeatedly press the increasing the value of the digit which is flashing at the time. When the required value is on the screen, move on to the following digit by pressing When the last digit has been changed, press allowing the previously set values to be changed again. To enter the data and

access the next setting step, press

min

, to allow the remaining values to be changed.

min

to move back to the first digit,

ma x

key

{m_n {hj_l {{**+

Figure 55. Peripheral number

4.2.3 Transmission speed

The transmission speed of RS485 communication bus may be: 1,200 bps, 2,400 bps, 4,800 bps, 9,600 bps or 19,200 bps. To select one of the transmission speeds available, press the

Once the required option is selected, press the access the next setting step.

ma x

key and the four options will alternate in turn.

key to enter the data and

{m_n {\[o^ {{+3,**

Figure 56. Transmission speed

4.2.4 Parity

Parity may be selected, even or odd; to select the type of parity, press the key and the three options will alternate in turn. Once the required option is

selected, press the key to enter the data and access the next setting step.

ma x

Page 20 of 26

{m_n {J[lc {hi

Figure 57. Parity

4.2.5 Data bits

7 or 8 data bits may be selected; to select the number of bits, press the and the two options will alternate in turn. Once the required option is selected,

press the

key to enter the data and access the next setting step.

ma x

key

{m_n {mnij {{{{+

Figure 58. Data bits

4.2.6 Protection of data Set-up using password

This menu option aims to protect the data set in As a default the equipment does NOT protect data with the “ pressing the If, on the other hand, the parameters in

the option “ pressed. The protection password as a default will always be password code entered will be incorrect.

key the data is entered and setting the equipment is finalised.

Measurement Set-up

Fi]

” has to be selected using the

Measurement Set-up

ohfi

are to be protected,

ma x

key and then the key

. ” option. By

+,-.

; any other

{m_n {j[mm {****

Figure 59. Password request to protect Set-up data

For entering the password, repeatedly press the the digit which is flashing at the time. When the required value is on the screen, move on to the following digit by pressing When the last digit has been changed, press allowing the previously set values to be changed again. In order to enter the

password, press the key entering the data and ending the setting.

In the event that the measurement SETUP parameters are to be changed again, the equipment has to be first unlocked by the same procedure (position “ and the appropriate changes are made.

min

, to allow the remaining values to be changed.

key. Once the password has been set, press the

{m_n {j[mm {+,-.

Figure 60. Enter password to protect Set-up data

ma x

key increasing the value of

min

to move back to the first digit,

ohfi

”),

Page 21 of 26

5 APPENDIX – CVM-MINI-ITF-HAR-RS485-C2 SERIES

The

CVM-MINI

harmonic in voltage and current, showing the content on the LCD display. Therefore, the HAR has a high number of display screens, where the value of the current and voltage fundamental and the content of each harmonic may be seen. The equipment’s display diagram is obtained by using the following procedure:

Series has an analyzer for the harmonic content up to the 15th

Figure 61. Display of Harmonic Content in Voltage and Current

6 MODBUS RTU PROTOCOL

The

CVM-MINI

MODBUS protocol the RTU (Remote terminal Unit) mode is used; each 8-bit per byte in a message contains two 4-bits hexadecimal characters.

The format for each byte in RTU mode is:

Page 22 of 26

Code 8 bit binary, hexadecimal 0-9, A-F.

2 hexadecimal characters contained in each 8-bit field in

the message. Bits per byte 8 data bits. Field Check-Error CRC Type (Cyclical Redundancy Check).

Modbus functions used:

Function 01 Reading the status of the relays.

Function 03 and 04 Reading n Words (16 bits-2 bytes). Function used for

reading the electrical parameters that the measuring. All electrical parameters are long with 32 bits, because of this two Words are required to request each parameter.

(4 bytes - XX XX XX XX)

Function 05 Writing a relay.

CVM-MINI

6.1 MODBUS memory map

PARAMETER SYMBOL

Voltage phase Current Active power Reactive power Apparent power Power factor Voltage phase Current Active power Reactive power Apparent power Power factor Voltage phase Current Active power Reactive power Apparent power Power factor Temperature

V L1 A L1

kW L1 Kvar L1 kV·A L1

PF L1

V L2 A L2

kW L2 Kvar L2 kV·A L2

PF L2

V L3 A L3

kW L3 Kvar L3 kV·A L3

PF L3

ºC

Instant Maximum Minimum Units

00-01 60-61 C0-C1 02-03 62-63 C2-C3 04-05 64-65 C4-C5 06-07 66-67 C6-C7

4A-4B AA-AB 10A-10B

08-09 68-69 C8-C9 0A-0B 6A-6B CA-CB 0C-0D 6C-6D CC-CD 0E-0F 6E-6F CE-CF

10-11 70-71 D0-D1 4C-4D AC-AD 10C-10D

12-13 72-73 D2-D3

14-15 74-75 D4-D5

16-17 76-77 D6-D7

18-19 78-79 D8-D9 1A-1B 7A-7B DA-DB 4E-4F AE-AF 10E-10F 1C-1D 7C-7D DC-DD

50-51 B0-B1 110-111

V x10

ºC x 10

w w

x 100

w w w

x 100

W W

x 100

Page 23 of 26

PARAMETER SYMBOL

Active power III Inductive power III Capacitive power III Cos φ III Power factor III

Frequency Voltage line L1-L2 Voltage line L2-L3 Voltage line L3-L1 % THD V L1 % THD V L2 % THD V L3 % THD A L1 % THD A L2 % THD A L3

Apparent power III Maximum demand

Three-phase current (average)

Neutral current Maximum demand A2 Maximum demand A3

kW III

KvarL III KvarC III Cos φ III

PF III

Hz V12 V23 V31

%THD VL1 %THD VL2 %THD VL3 %THD AL1 %THD AL2 %THD AL3

KvaIII

Md (Pd)

A_AVG

In Md (Pd) Md (Pd)

PARAMETER SYMBOL

Active energy Inductive reactive energy Capacitive reactive energy Apparent energy Active energy generated Inductive energy generated Capacitive energy generated Apparent energy generated

kW·h III kvarL·h III kvarC·h III

kVA·h III

kW·h III (-) kvarL·h III (-) kvarC·h III (-)

kVA·h III (-)

Instant Maximum Minimum Units

1E-1F 7E-7F DE-DF

20-21 80-81 E0-E1 22-23 82-83 E2-E3 24-25 84-85 E4-E5 26-27 86-87 E6-E7

28-29 88-89 E8-E9 2A-2B 8A-8B EA-EB 2C-2D 8C-8D EC-ED

2E-2F 8E-8F EE-EF

30-31 90-91 F0-F1

32-33 92-93 F2-F3

34-35 94-95 F4-F5

36-37 96-97 F6-F7

38-39 98-98 F8-F9 3A-3B 9A-9B FA-FB

42-43 A2-A3 102-103

44-45 A4-A5 104-105

46-47 A6-A7 106-107

48-49 A8-A9 108-109

52-53 B2-B3 112-113

54-55 B4-B5 114-115

MODBUS VARIABLES

Instant Maximum Minimum Units

3C-3D 9C-CD FC-FD

3E-3F 9E-9F FE-FF

40-41 A0-A1 100-101 56-57 B6-B7 116-117

58-59 B8-B9 118-119 5A-5B BA-BB 11A-11B 5C-5D BC-BD 11C-11D

5E-5F BE-BF 11E-11F

w w

w x 100 x 100

Hz x 10

V x10 V x10 V x10

% x 10 % x 10 % x 10 % x 10 % x 10 % x 10

w/VA/mA

mA mA mA mA

w·h w·h w·h w·h w·h w·h w·h w·h

Page 24 of 26

* Recordings available in HAR model

MODBUS VARIABLES

PARAMETER SYMBOL L1 L2 L3 Units

Harmonic content in VOLTAGE

RMS current

Harmonic 2 2B0-2B1 2CE-2CF 2EC-2ED Harmonic 3 2B2-2B3 2D0-2D1 2EE-2EF Harmonic 4 2B4-2B5 2D2-2D3 2F0-2F1 Harmonic 5 2B6-2B7 2D4-2D5 2F2-2F3 Harmonic 6 2B8-2B9 2D6-2D7 2F4-2F5 Harmonic 7 2BA-2BB 2D8-2D9 2F6-2F7 Harmonic 8 2BC-2BD 2DA-2DB 2F8-2F9 Harmonic 9 2BE-2BF 2DC-2DD 2FA-2FB Harmonic 10 2C0-2C1 2DE-2DF 2FC-2FD Harmonic 11 2C2-2C3 2E0-2E1 2FE-2FF Harmonic 12 2C4-2C5 2E2-2E3 300-301 Harmonic 13 2C6-2C7 2E4-2E5 302-303 Harmonic 14 2C8-2C9 2E6-2E7 304-305 Harmonic 15 2CA-2CB 2E8-2E9 306-307

Instant Maximum Minimum

2AE-2AF 2CC-2CD 2EA-2EB

Vx10

% % % % % % % % % % % % % %

* Recordings available in HAR model

MODBUS VARIABLES

PARAMETER SYMBOL L1 L2 L3 Units

Harmonic content in CURRENT

RMS current

Harmonic 2 1F6-1F7 214-215 232-233 Harmonic 3 1F8-1F9 216-217 234-235 Harmonic 4 1FA-1FB 218-219 236-237 Harmonic 5 1FC-1FD 21A-21B 238-239 Harmonic 6 1FE-1FF 21C-21D 23A-23B Harmonic 7 200-201 21E-21F 23C-23D Harmonic 8 202-203 220-221 23E-23F Harmonic 9 204-205 222-223 240-241 Harmonic 10 206-207 224-225 242-243 Harmonic 11 208-209 226-227 244-245 Harmonic 12 20A-20B 228-229 246-247 Harmonic 13 20C-20D 22A-22B 248-249 Harmonic 14 20E-20F 22C-22D 24A-24B Harmonic 15 210-211 22E-22F 24C-24D

Instant Maximum Minimum

1F4-1F5 212-213 230-231

% % % % % % % % % % % % % %

Page 25 of 26

CONVERTER

6.2 RS485 Connection diagram

RS-232

RS-485

512

-232 / RS-485

CONVERTIDOR RS-232 / RS-485

A ( + )

B ( - )

S GND

DB-9

7 TECHNICAL SERVICE

In the event of any equipment failure or any operational queries please contact the technical service of CIRCUTOR S.A. CIRCUTOR S.A. - After sales service. Vial Sant Jordi, s/n 08232 - Viladecavalls. Tel. - +34.93.745.29.00 Fax - +34.93.745.29.14 E-mail -

medida@circutor.es

Page 26 of 26

CIRCUTOR CVM-MINI User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual