CIRCUTOR CVM-NRG96 User Manual

Power Analyzer

CVM-NRG96

User manual

Extended version

CVM-NRG96

Checks on receipt.

This manual assists in the installation and use of the CVM NRG 96 power analyzer so that the best possible use can be gained from it. On receipt of the equipment check the following:

• The equipment corresponds to the specifications in your order.

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

• Check that it has the correct instruction manual.

TABLE OF CONTENTS

For safety reasons it is essential that anyone installing or handling the CVM NRG 96 follow the usual safety procedures as well as the specific warnings in this instruction manual. Installing and maintenance for this analyzer must be carried out by a qualified person.

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General features ……………… page 4

Installation and start-up ……………… page 6

Power supply voltage ……………… page 6 Maximum voltage in the measurement circuit ……………… page 7 Maximum admissible current ……………… page 7 Features of the transistor ……………… page 7 Operating conditions ……………… page 7 Safety ……………… page 7

Connection diagrams ……………… page 9

Operation ……………… page 13

Setting menus ……………… page 14

Programming SETUP Measurement ……………… page 15

Status of Setup Measurement ……………… page 15 Simple or compound voltages ……………… page 16 Transformation ratios ……………… page 16 Programming the power demand meter ……………… page 18 Programming the main page and preferred energy …..…… page 19 Backlight (Back-lighting of the display) ……………… page 20 Deletion of Energy meters ……………… page 21 Programming THD or d ……………… page 21 Transistor digital output ……………… page 22

Programming SETUP Communications ……………… page 26

Setting communication parameters ……………… page 27 Protection of SETUP measurement ……………… page 30

MODBUS protocol RTU ……………… page 31

MODBUS memory map ……………… page 32 RS485 connection ……………… page 35

FAQ’S (Frequently Asked questions) ……………… page 36

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General features

The CVM-NRG 96 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.

With its processor, the measurement station allows simultaneous analysis of:

MAGNITUDE

Simple Voltage Compound voltage Current Frequency Active power Reactive Power L Reactive Power C Apparent Power Power Factor Cos ϕ Cos ϕ Maximum Demand Neutral Current Voltage THD Current THD 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 decomposition (V and A) * %

The CVM-NRG 96 measures, calculates and displays the main electrical parameters in three phase, balanced or unbalanced industrial systems. Measurements are taken in true effective value using the three alternating voltage inputs and three current inputs to measure 5 A secondaries from external measurement toroids.

UNIT

V V A

Hz

kW

kvarL

kvarC

kVA

PF

L1 L2

• • •

•

• • •

•

• • •

•

Pd

I

N

% THD – V % THD – A

• • •

•

• • •

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

L3

•

III

••

•

15th

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The CVM-NRG 96 allows the display of all electrical parameters shown above, using the back-lit LCD display, showing 4 instant electrical parameters, maximum or minimum on each page jump.

Other features:

 Small sized instrument (96x96x50).  Measurement in true effective value.  Instant, maximum, minimum values for each parameter.  Energy measurer function.

- 1 GW·h in consumed energy.

- 100 MW·h in generated energy.

 Backlit LCD display.  RS485 communications (Modbus RTU®) included.

Available models:

CVM-NRG96

CVM-NRG96 M51800 CVM-NRG96-ITF M51900 CVM-NRG96-ITF-RS485-C M51911 CVM-NRG96-ITF-RS485-C-HAR M51B11 CVM-NRG96-ITF-P-RS485-C M51A11

CODE

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Installation and start-up

This manual contains information and warnings that must be followed by the user to ensure the safe operation of the equipment and to maintain it in a safe condition. The analyzer must not be switched on until it is finally attached to the electrical board.

IF THE EQUIPMENT IS HANDLED IN A WAY NOT SPECIFIED BY THE

MANUFACTURER, THE EQUIPMENT'S PROTECTION MAY BE COMPROMISED

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

Installing the equipment

Check the following points before switching the equipment on:

a) Power supply voltage. b) Maximum voltage in the measurement circuit. c) Maximum admissible current. d) Features of the transistor (digital output). e) Operating conditions. f) Safety.

A. Power supply voltage

 Standard version:

- Power supply : 230 V AC.

- Frequency : 50-60 Hz

- Power supply tolerance : -15% / +10%

- Connection board : Terminals 1-2 (Power Supply)

- Consumption of the equipment : 5 V·A

 Version Plus:

- Power supply : 85…265 V AC. // 95…300 V DC.

- Frequency : 50-60 Hz

- Connection board : Terminals 1-2 (Power Supply)

- Consumption of the equipment : 5 V·A

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B. Maximum voltage in the measurement circuit:

- Voltage : 300 V ∼AC. phase-neutral 520 V ∼AC. phase-phase

- Frequency : 45…65 Hz

C. Maximum admissible current:

- Current : External transformers In /5A.

D. Transistor features(output):

- NPN Type : Opto-isolated Transistor /Open Collector

- Maximum operating voltage: 24 V.DC.

- Maximum operating current: 50 mA

- Maximum frequency : 5 pulses / second

- Pulse length : 100 ms

E. Operating conditions:

- Operating temperature : -10 ºC / +50ºC

- Relative humidity : 5 to 95 % HR (without condensation)

- Altitude : up to 2,000 metres

F. Safety:

- Designed for category III installations 300 V ∼AC. (EN 61010).

- Protection against electric shock by class II double isolation.

Installation

Installation for the equipment is by panel(panel drill 92 DIN 43 700). All connections must remain inside the electrical board.

Bear in mind that when the equipment is connected, the terminals may be dangerous if touched. Opening covers or removing parts may access parts which are dangerous if touched. The equipment must not be used until it is fully 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. The power supply circuit and the voltage measurement circuit is connected with a cable with a minimum cross section of 1 mm The secondary line for the current transformer shall have a minimum cross section of

2.5 mm

2

.

+0.8

2

.

x 92

+0.8

m.m., according to

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Terminal list

3812

10141674

91361115

17

1

2 5

CVM-NRG96

No. Terminal description

1

Power supply voltage input

2

Power supply voltage input

3

Transistor output RL1

4

Transistor output RL2

RS-485 ( + )

5 6

RS-485 ( - )

7

RS-485 ( GND )

8

Measurement VL1

9

Measurement VL2

10

Measurement VL3

11

Neutral measurement

12

Current input AL1 – S2

13

Current input AL1 – S1

14

Current input AL2 – S2

15

Current input AL2 – S1

16

Current input AL3 – S2

Current input AL3 – S1

17

Note: Internally terminals 13, 15 and 17 are joined to terminal 6, Neutral (in no

isolated model). The current inputs... / 5 A are isolated in model ITF.

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Connection diagrams

A. Three phase system measurement with 4 wire connection (Low Voltage) and

three external current transformers.

Power supply AC. // Version Plus DC.

Description

+ V DC.

- V DC.

M9817250120-03-05A

Power supply “Plus”

Terminal

1 2

9

CVM-NRG96

B. Three phase system measurement with 3 wire connection (Low Voltage) and

three external current transformers.

Power supply AC. // Version Plus DC.

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C. Three phase system measurement with 3 wire connection using 2 transformers

and three external current transformers.

Power supply AC. // Version Plus DC.

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CVM-NRG96

D. Three phase system measurement with 3 wire connection using 2 voltage

transformers and two external current transformers.

Power supply AC. // Version Plus DC.

M9817250120-03-05A

12

o

Operation

Generic functions of the front keypad:

Key Reset:

 Starting the equipment.  Deletion of Maximum and Minimum values.  This is equivalent to starting the equipment in the absence of

voltage.

Key Display:

 Displaying all variables by repeated presses.  Function key in set-up menu: pressing the Display key moves

forward through different screens, both on the configuration menu and the communications menu.

 In runtime mode, a long press (keeping the key pressed for 2

seconds), displays the energy meters:

 Active Energy Consumed  Reactive Inductive Energy Consumed  Reactive Capacitive Energy Consumed  Apparent energy Consumed  Active energy Generated  Inductive Reactive Energy Generated  Reactive Capacitive Energy Generated  Apparent Energy Generated

Key Max and Min:

 Display of maximums or minimums for each variable displayed; this

function is only valid while the key is being pressed. Once it is stopped being pressed the instant values appears again after five seconds.

 Function keys in set-up menu: the MIN key selects the code or

parameter to be changed and the MAX key assigns the corresponding code and/or variable.

CVM-NRG96

t

e

s

e

r

max

min

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Configuration Menu

TheCVM-NRG96 analyzer has two configuration menus:

1. MEASUREMENT SETUP:

from this menu, the user can set the measurement parameters and the analyzer's different display options.

- Measurement Setup Status (locked or unlocked)

- Simple or compound voltages

- Transformation ratios

- Power Demand Meter Setting

- Main page and preferred energy setting

- Backlight (Backlit display)

- Deletion of Energy meters

-

2. COMMUNICATIONS SETUP:

Configures the communication parameters: speed, parity, stop bits, etc; it also accesses the locking menu using a password in the measurement SET UP.

- Communication parameters setting

- Protection of measurement SETUP.

CVM-NRG96

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Setting MEASUREMENT SETUP

The parameters for the CVM-NRG 96 and all its functions are displayed and changed from this menu (according to type); it may start the eight energy meters and return maximum demand to zero (Pd), maximums and minimums recorded. The analyzer does not store the changes to the settings until the whole setting program has been completed. If it is RESET before the end of the setting process, the configuration entered is not stored in the memory.



To access MEASUREMENT SETUP the MAX and MIN keys have to

pressed at the same time until setting mode is entered.

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

 M?NOJ{ohfi{ On entering setting mode it is possible to see and change the setting.

 M?NOJ{fi]{

On entering setting mode it is possible to see the setting but not possible to

Once in MEASUREMENT SETUP using the keypad, it is possible to select the different options and enter the variables:

The keypad functions to carry out the setting are as follows:

change it.

 The key enters the data and moves on to the following menu.  The MAX key allows the selection of the different options in the menu or

increases a digit in the event that a variable has been entered.

 The MIN key is used to move the cursor among the digits.

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1. Simples or Compound Voltages

 Simple Voltages O+{ O,{ O-{  Compound Voltages O+,{ O,-{ O-+

To select one of the two display options, just press the MAX key and the two options will alternate.

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

2. Transformation Ratios

 Transformer voltage primary

The display shows “m_n{ Oifn{ Jlf followed by three digits; these allow the setting of the transformer voltage primary.

{O+ {O,

{O-

{{M_n {{Oifn

{{JlC *****+

To write or change the value of the transformer primary value repeatedly press the MAX 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 MIN, to allow the remaining values to be changed. When the last digit has been changed, press MIN to move back to the first digit, allowing the previously set values to be changed again.

To enter the data and access the next setting step, press

{O+, {O,-

{O-+

CVM-NRG96

key to enter the data and

.

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 Transformer Voltage Secondary

The display shows “m_n{ Oifn{ M_] followed by three digits; these allow the setting of the transformer voltage secondary.

To write or change the value of the transformer secondary value repeatedly press the MAX 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 MIN, to allow the remaining values to be changed. When the last digit has been changed, press MIN to move back to the first digit, allowing the previously set values to be changed again.

To enter the data and access the following setting step, press

 Transformer current primary

The display shows ”m_n{=oll{JlC” followed by five digits; these allow the setting of the transformer current primary.

CVM-NRG96

{M_n {Oifn

{M_] {{**+

.

{M_n {=oll

{JlC ****+

To write or change the value of the transformer primary value repeatedly press the MAX 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 MIN, to allow the remaining values to be changed. When the last digit has been changed, press MIN to move back to the first digit, allowing the previously set values to be changed again.

To enter the data press

.

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3. Setting the Power Demand Meter

 Magnitude to Integrate

The display shows “m_n{j^{=i^_” followed by two digits which identify the code or variable to be integrated as Maximum Demand.

None Three phase active power kW III Three phase apparent power kV·A III Three phase current AIII Current per phase A1 - A2 - A3

The MAX key allows the selection of the Maximum Demand variable to be integrated.

Once selected to access the next setting step, press

 Integration Period

The display shows “m_n{ j^{ J_l” followed by two digits which will identify the period of integration for the selected magnitude.

To write or change the value of the integration period repeatedly press the MAX 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 MIN, to allow the remaining values to be changed. When the last digit has been changed, press MIN to move back to the first digit, allowing the previously set values to be changed again. The integration period may vary between 1 to 60 minutes.

To enter the data and access the following setting step, press

{M_n {J>

{J?l {{{+/

**

**{{{{

**** +0

+0{{{{

+0+0

-.

-.{{{{

-.-.

-0

-0{{{{

-0-0

;;;;''''Jb

Jb{{{{

JbJb

.

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 Deletion of maximum Demand

The display shows “=fl{j^{hi({

To select one of the two display options, just press the MAX key and the two options will alternate.

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

4. Setting the main page and preferred energy

 Preferred page and fixed or rotating mode

The display shows ”m_n{^_`{j[3_{O[lm”.

{=fl {j^

{hi

{M?n {^?@

{J;3? {O;LM

Fixed page: Default value display when switched on or the CVM-NRG 96 started.

The MIN key has to be repeatedly pressed until the required default page is displayed; to enter the page and access the following step the key

has to be pressed.

Rotating page: Display of all electrical parameters using the automatic rotation of the 12 screens in intervals of 5 seconds.

The MIN key has to be repeatedly pressed until all of the electrical magnitudes flash; to enter the rotating function and access the following

step, the

key has to be pressed

.

CVM-NRG96

{=fl {J^

{S_m

key to enter the data and

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 Preferred Magnitude of Energy

The display shows ”m_n{ ^_`{ j[3_{ ?h_l” and the Active Energy symbol (kWh) flashes.

By repeatedly pressing the MAX key the required energy magnitude is selected. This may be:

Magnitude of Energy Direction Symbol

Active Energy Consumption Inductive Reactive Energy Consumption Capacitive Reactive Energy Consumption Apparent Energy Consumption Active Energy Generation (-) Inductive Reactive Energy Generation (-) Capacitive Reactive Energy Generation (-) Apparent Energy Generation (-)

Once the energy has been selected press the key to enter the data and access the next setting step

5. Backlight (Backlit display).

 Backlight timer

The display shows ”m_n{^cmj{i``”.

{M?n {^?@

{J;3? {?h_l

CVM-NRG96

kW·h

kvarL·h

kvarC·h

kVA·h

- kW·h

- kvarL·h

- kvarC·h

- kVA·h

{M?n {^Cmj

{{i`` {{{**

Indicates the screen protector time (in seconds), disconnecting the Backlight.

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** Backlight permanently on *+{…{0*{ Backlight on from 1 to 60 seconds.

These values(t), refer to the time from the last time the equipment was used via the keypad.

6. Deletion of Energy meters.

 Deletion of the eight Energy meters

The display shows ”=fl{_h_l{hi”.

To select one of the two display options, just press the MAX key and the two options will alternate.

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

7. Setting THd or d

 Selecting Harmonic Distortion Analysis

The display shows ”m_n{b[l{nb^”.

Thd %: Total value of harmonic distortion referred to the true effective value (RMS). d %: Total value of harmonic distortion referred to the fundamental value(RMS).

{=fl {?h_l

{hi

{m_n {B[l

{nB^

CVM-NRG96

{=fl {?h_l

{s_m

key to enter the data and

{m_n {B[l

{^

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To select one of the two display options, just press the MAX key and the two options will alternate.

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

8. Digital output for the transistor.

The CVM-NRG96's digital output may set:

a. Pulse per n kW.h or kvar.h (Energy): the value for the energy

consumed or generated may be set to generate a pulse.

b. Alarm condition: associates a magnitude to a digital output, setting

a maximum, minimum and delay (delay) for the trip condition.

In the event that no variable needs to be set, put ** and enter using the

key.

The display shows ”Ion{O[l{=i^_”.

 Setting pulse per n kW·h or kvar·h

Energy code table:

Magnitude Symbol Code

Active Energy III kW·h III 31 Inductive Reactive Energy III KvarL·h III 32 Capacitive Reactive Energy III KvarC·h III 33 Apparent Energy III kVA·h III 44 Active energy Generated III kW·h III (-) 45 Inductive Reactive Energy Generated III KvarL·h III (-) 46 Capacitive Reactive Energy Generated III KvarC·h III (-) 47 Apparent Energy Generated III kVA·h III (-) 48

CVM-NRG96

key to enter the data and

{Ion {O[l

{=i^_ {{{**

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Once the energy code has been selected and entered using the key the watts per pulse must be entered or as a default kilowatts per pulse.

{Ion {Jofm

{l[n_ **(***

Example: ***(/** 500 watts·h/pulse **+(/** 1.5 kilowatts·h/pulse

To write or change the watts. hour/pulse, the MAX key has to be repeatedly pressed, increasing the value of the digit flashing at the time. When the required value is on the screen, move on to the following digit by pressing MIN, to allow the remaining values to be changed. When the last digit has been changed, press MIN to move back to the first digit, allowing the previously set values to be changed again.

Once the required option is selected, press the so finish the equipment configuration.

 Setting alarm condition

Alarm code table per condition:

Magnitude Phase Symbol L1 Code

Simple Voltage L1 V 1 01 Current L1 Active Power L1 Reactive Power L/C Power Factor % THD V % THD A Simple Voltage L2 V 2 06 Current L2 Active Power L2 Reactive Power L/C Power Factor % THD V % THD A

L1 L1 L1 L1

L2 L2 L2 L2

key to enter the data and

A 1 02

kW 1 03

KvarL/C 1 04

PF 1 05 THD V1 25 THD A1 28

A 2 07

kW 2 08

KvarL/C 2 09

PF 2 10 THD V2 26 THD A2 29

CVM-NRG96

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Magnitude Phase Symbol L1 Code

Simple Voltage L3 V 3 11 Current L3 Active Power L3 Reactive Power L/C L3 Power Factor L3 % THD V L3 % THD A L3

Magnitude Symbol Code

Simple Voltages V1 / V2 / V3 90 Currents A1 / A2 / A3 91 Active Powers kW1 / kW2 / kW3 92 Reactive Powers Kvar1 / kvar2 / kvar3 93 Power Factors PF1 / PF2 / PF3 94 Compound Voltages V12 / V23 / V31 95 % THD V Thd1 / Thd2 / Thd3 V 96 % THD I Thd1 / Thd2 / Thd3 A 97

Magnitude Symbol Code Magnitude Symbol Code

Active Power III kW III 16 Inductive Power III kvarL III 17 Power Factor III PF III 20 Capacitive Power III kvarC III 18 Frequency Hz 21 Active Energy kW·h 31 L1- L2 Voltage V 12 22 React. Energy Inductive Kvarh·L 32 L2-L3 Voltage V 23 23 React. Energy Capacit. Kvarh·C 33 L3-L1 Voltage V 31 24 Apparent Power III kV·A III 34 Maximum Demand Md (Pd) 35 Maximum Demand L1 Md (Pd) Current III AIII 36 Maximum Demand L2 Md (Pd) Neutral Current IN 37 Maximum Demand L3 Md (Pd)

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

There are also some variables 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 meet the preset conditions.

Magnitude Symbol Code

Simple Voltages V1 / V2 / V3 90 Currents A1 / A2 / A3 91 Active Powers kW1 / kW2 / kW3 92 Reactive Powers Kvar1 / kvar2 / kvar3 93 Power Factors PF1 / PF2 / PF3 94 Compound Voltages V12 / V23 / V31 95 % THD V Thd1 / Thd2 / Thd3 V 96 % THD I Thd1 / Thd2 / Thd3 A 97

cos ϕthree phase cos

A 3 12

kW 3 13

KvarL/C 3 14

PF 3 15 THD V3 27 THD A3 30

19

ϕ

35* 42* 43*

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

(hysteresis) for the alarm condition must be entered.

- Hi: Maximum value; transistor closed above this value.

- Lo: Minimum value; transistor closed below this value.

- Delay: Delay in seconds from the connection and disconnection

To write or change the maximum and minimum values, the MAX key has to be pressed, increasing the value of the digit flashing at the time. When the required value is on the screen, move on to the following digit by pressing MIN, to allow the remaining values to be changed. When the last digit has been changed, press MIN to move back to the first digit, allowing the previously set values to be changed again.

In order to enter one of the data, press the setting step. Once the delay has been set, the

entering the data and ending the configuration.

MIN +

MIN --

MIN + MAX --

MIN --

* The alarms depend on the preset values: MAXIMUM and MINIMUM

key, the maximum value, minimum value and the delay

{Ion {Bc

{***(*

{Ion {Fi

{***(*

{Ion {^_f[

{****

of the transistor.

key moving on to the next

key must be pressed

MAX +

max > min

MAX +

max < min

MAX +

MAX --

max > min

MAX --

max < min

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

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Setting COMMUNICATION SETUP

One or more CVM-NRG96 instruments may be connected to a computer or PLC in order to automize 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 CVM-NRG96 has an RS-485 communication output. 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 SETUP, the CVM-NRG96's communication parameters may be 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 RESET before the end of the setting, the configuration entered is not stored in the memory.



To access COMMUNICATIONS SETUP the RESET key has to be pressed (until the

equipment starts) and then the MAX, MIN and setting mode is entered.

On entering setting mode the message "M?NOJ{chc]" appears for a few seconds, informing the user that the equipment has entered communications display or setting mode.

Below the display shows “m_n{jlin{\om"

*(Only for models with communication)

keys have to be pressed until

{M_n {Jlin

{\om

Using this information screen, the equipment is informing the user that the Communication Protocol via the RS-485 series port is standard MODBUS©.

To enter setting mode the

key must be pressed.

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1. Setting the communication parameters

 Default settings (factory settings)

The display shows ”m_n{=^_`{hi”

To select one of the two display options, just press the MAX key and the two options will alternate.

m_n{=^_`{hi{ Personalized communication parameters. m_n{=^_`{S_m{ Peripheral: 001

Transmission speed: 9,600 bps Data bits: 8 Parity No Stop bits 1

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

If the selected option is “m_n{=^_`{S_m” the configuration screens refer to: peripheral number, speed, data bits, parity and stop bits, are omitted moving on to the last screen in the communication menu.

If the selected option is “m_n{=^_`{hi”:

 Peripheral number

The display shows ”m_n{hj_l{**+”.

{m_n {=^_`

{hi

CVM-NRG96

{M_n {=^_`

{s_m

key to enter the data and

{M?n {hj_l

{{**+

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CVM-NRG96

To write or change the number of the peripheral repeatedly press the MAX 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 MIN, to allow the remaining values to be changed. When the last digit has been changed, press MIN to move back to the first digit, allowing the previously set values to be changed again. The peripheral number varies between 0 and 255 (0 and FF in hexadecimal)

To enter the data and access the following setting step, press

 Transmission speed

The display shows ”m_n{\[o^{l[n_{30**”

.

{M?n {\[o^

{l[n_ {30**

To vary the peripheral transmission speed repeatedly press MAX changing the value of the different communications options. Available speeds are: 1,200, 2,400, 4,800, 9,600 or 19,200 bps. Once the required selection has been made, the next setting step is

accessed by pressing the key

 Parity

The display shows ”m_n{j[lcns{hi”

To select one of the two display options, just press the MAX key and the two options will alternate.

{m_n {J[lc

{ns {hi

.

{M_n {J[lc

{ns {s_m

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CVM-NRG96

Once the required option is selected, press the key to enter the data and access the following setting step.

 Data Bits

The display shows ”m_n{^[n[{\cnm{2”

{M?n {^[n[

{\cnm {{{{2

This menu option is solely for information, because data bits cannot be changed.

Then press the step.

 Stop Bits

The display shows “m_n{mnij{\cnm{+”

To select one of the two display options, just press the MAX key and the two options will alternate.

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

key to enter the data and access the following setting

{m_n {mnij

{\cnm {{{{+

{M_n {mnij

{\cnm {{{{,

key to enter the data and

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2. Protection of measurement SETUP

The display shows “m_n{OJ{ohfi”

{m_n {Oj

{ohfi

This menu option aims to protect the data set in the Measurement Setup. As a default the equipment does NOT protect data with the “ohfi&{

ijncih{ [h^{ \s{ jl_mmcha{ nb_{ e_s{ enters the data and ends the configuration of the equipment.

If on the other hand the parmeters in Measurement Setup are to be protected, the option “Fi]” has to be selected using the MAX key and then

the always be +,-.

The display shows on the screen

key must be pressed. The protection password as a default will

+,-.; any password code entered will be incorrect.

+,-.+,-.

{m_n {Oj

{J;MM {****

To write the protection password +,-. pressed, increasing the value of the digit flashing at the time. When the required value is on the screen, move on to the following digit by pressing MIN, to allow the remaining values to be changed. When the last digit has been changed, press MIN to move back to the first digit, allowing the previously set values to be changed again.

Once the password protection has been set, the entering the data and ending the configuration of the equipment.

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 fi] and the appropriate changes are made.

CVM-NRG96

{M_n {OJ

{Fi]

{M_n {OJ

{J;MM {+,-.

+,-., the MAX key has to be repeatedly

+,-.+,-.

key must be pressed,

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CVM-NRG96

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

The format for each byte in RTU mode

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 CVM-NRG96 is 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.

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Magnitude

Voltage Phase V L1 Current A L1 Active Power kW L1 Reactive Power Kvar L1 Power Factor PF L1 Voltage Phase V L2 0A-0B 6A-6B CA-CB V x10 Current A L2 Active Power kW L2 Reactive Power Kvar L2 Power Factor PF L2 Voltage Phase V L3 14-15 74-75 D4-D5 V x10 Current A L3 Active Power kW L3 Reactive Power Kvar L3 Power Factor PF L3

Active Power III kW III Inductive Power III KvarL III Capacitive Power III KvarC III Cos φ III Cos φ III Power Factor III PF III

Frequency Hz Voltage Line L1-L2 V12 Voltage Line L2-L3 V23 Voltage Line L3-L1 V31 % THD V L1 %THD VL1 30-31 90-91 F0-F1 % x 10 % THD V L2 %THD VL2 % THD V L3 %THD VL3 % THD A L1 %THD AL1 % THD A L2 %THD AL2 % THD A L3 %THD AL3

Apparent Power III KvaIII Maximum Demand Md (Pd) Three Phase Current ( Neutral Current In 48-49 A8-A9 108-109 mA Maximum Demand A2 Md (Pd) 52-53 B2-B3 112-113 mA Maximum Demand A3 Md (Pd) 54-55 B4-B5 114-115 mA

average

Symbol

) A_AVG 46-47 A6-A7 106-107 mA

MODBUS VARIABLES

Instant Maximum Minimum Unit

00-01 60-61 C0-C1 02-03 62-63 C2-C3 04-05 64-65 C4-C5 06-07 66-67 C6-C7 08-09 68-69 C8-C9

0C-0D 6C-6D CC-CD 0E-0F 6E-6F CE-CF

10-11 70-71 D0-D1 12-13 72-73 D2-D3

16-17 76-77 D6-D7

18-19 78-79 D8-D9 1A-1B 7A-7B DA-DB 1C-1D 7C-7D DC-DD

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

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

CVM-NRG96

V x10

mA

w w

x 100

mA

w w

x 100

mA

W W

x 100

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

w

w/VA/mA

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Magnitude

Active Energy kW·h III Inductive Reactive Energy kvarL·h III React. Energy Capacitive kvarC·h III 40-41 A0-A1 100-101 w·h Apparent Energy kVA·h III 56-57 B6-B7 116-117 w·h Active energy Generated kW·h III (-) 58-59 B8-B9 118-119 w·h Inductive energy generated kvarL·h III (-) 5A-5B BA-BB 11A-11B w·h Capacit. Energy Generated kvarC·h III (-) Apparent Energy Generated kVA·h III (-)

*Recordings available in HAR model

Magnitude Symbol

Harmonic decomposition in VOLTAGE Instant

RMS Current V Harmonic 2 Harmonic 3 Harmonic 4 Harmonic 5 Harmonic 6 Harmonic 7 Harmonic 8 Harmonic 9 Harmonic 10 Harmonic 11 Harmonic 12 Harmonic 13 Harmonic 14 Harmonic 15

Harmonic decomposition in CURRENT Instant

RMS current A Harmonic 2 Harmonic 3 Harmonic 4 Harmonic 5 Harmonic 6 Harmonic 7 Harmonic 8 Harmonic 9 Harmonic 10 Harmonic 11 Harmonic 12 Harmonic 13 Harmonic 14 Harmonic 15

Symbol

2BA-2BB 2D8-2D9 2F6-2F7 2BC-2BD 2DA-2DB 2F8-2F9

2C0-2C1 2DE-2DF 2FC-2FD 2C2-2C3 2E0-2E1 2FE-2FF 2C4-2C5 2E2-2E3 300-301 2C6-2C7 2E4-2E5 302-303 2C8-2C9 2E6-2E7 304-305 CA-CB 2E8-2E9 306-307

200-201 21E-21F 23C-23D 202-203 220-221 23E-23F

206-207 224-225 242-243 208-209 226-227 244-245 20A-20B 228-229 246-247 20C-20D 22A-22B 248-249 20E-20F 22C-22D 24A-24B 210-211 22E-22F 24C-24D

MODBUS VARIABLES

Instant

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

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

5C-5D BC-BD 11C-11D

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

Maximum Minimu

m

MODBUS VARIABLES

L1 L2 L3 Unit

2AE-2AF 2CC-2CD 2EA-2EB 2B0-2B1 2CE-2CF 2EC-2ED 2B2-2B3 2D0-2D1 2EE-2EF 2B4-2B5 2D2-2D3 2F0-2F1 2B6-2B7 2D4-2D5 2F2-2F3 2B8-2B9 2D6-2D7 2F4-2F5

2BE-2BF 2DC-2DD 2FA-2FB

1F4-1F5 212-213 230-231 1F6-1F7 214-215 232-233

1F8-1F9 216-217 234-235 % 1FA-1FB 218-219 236-237 % 1FC-1FD 21A-21B 238-239 % 1FE-1FF 21C-21D 23A-23B

204-205 222-223 240-241 %

CVM-NRG96

Unit

w·h w·h

Vx10

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

mA

%

% % %

% % % % % %

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QUESTION 0A 04 00 00 00 0A 71 76

0A Peripheral number, 10 in decimal 04 Reading function 00 00 Record at which the reading is to start 00 0A Number of recording to be read: 10 in decimal 71 76 CRC Character

RESPONSE 0A 04 14 00 00 08 4D 00 00 23 28 00 00 0F A0 00 00 00 90 00 00 00 60 CB 2E

0A Number of the peripheral that is responding, 10 in decimal

04 Reading function- the one used in the question 14 Number of bytes received (20). 00 00 08 4D V1x 10 (record 00 Hex) with value in decimal 212.5 V 00 00 23 28 mA 1, in decimal 9000 mA 00 00 0F A0 W 1, in decimal 4000 W 00 00 00 90 varL 1, in decimal 144 varL 00 00 00 60 PF1 x 100, in decimal 96 CB 2E CRC Character

*Each Modbus frame has a maximum limit of 20 variables (40 recordings).

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CVM-NRG96

A

2

B ( - )

A ( + )

PC

Connection for the RS485 BUS

The composition of the RS-485 cabling must be carried out with a meshed screen cable (minimum 3 wire) with a maximum distance of 1,200 metres between the CVM-NRG96 and the master unit. This Bus may connect a maximum of 32 CVM-NRG96 analyzers.

RS-232

A1

RS-485

7

2

512

5

3

RS-232 / RS-485

CONVERTIDOR

CONVERTER

RS-232 / RS-485

5

2

1

DB-9

7

3

2

C GND

CVM-NRG 96

For communication with the master unit, the RS-232 to RS-485 System Protocol Intelligent Converter has to be used (M54020 Intelligent Converter). This converter does not require the 7 Pin connection in the RS232 part.

M9817250120-03-05A

35

CVM-NRG96

FAQ’s

1. The CVM-NRG96 analyzer, once cabled and connected is seen to give a correct voltage and current reading, but shows negative values for active power (generation).

This is an error with the cabling for the current transformer secondaries; the direction of the transformer current has to be respected as shown in the connection diagram. The current transformers have a two face primary; the current must pass from P1 to P2 giving the result in secondary (S1 and S2) of 5 amps.

The error stems from:

a) The current transformers have been incorrectly installed. As a

result it gives the direction of the current as passing from P2 to P1; to resolve this problem, the current transformer does not have to be dismantled and installed again, but the transformer secondary (S1 and S2) just has to be inverted.

b) The connection of the current secondaries in the current

transformers have been incorrectly connected; to resolve this problem just connect the S1 transformer secondary to the S1 on the analyzer and the S2 on the current transformer to the S2 on the analyzer.

2. The CVM-NRG96 analyzer, once cabled and connected, is seen to give an incoherent Power factor and Cos φ III reading (-0.01 or similar).

This is again a current transformer and voltage phase connection error phase L1 (R), must correspond to the current transformer installed in phase L1 (R); phase L2 (S), must correspond to the current transformer installed in phase L2 (S); and phase L3 (T), must correspond to the current transformer installed in phase L3 (T). This connection is clearly shown on the back of the analyzer.

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CVM-NRG96

3. The CVM-NRG96 analyzer does not correctly display the current reading. It shows values varying between 0 to 5 amps of current.

Ensure that the Transformer Primary ratio has been correctly set; once correctly set the current measurement shall be shown correctly extrapolated to primary (see section on transformer ratios).

4. The CVM-NRG96 analyzer is measuring in average voltage and is displaying the secondary voltage (for example 110 volts).

Ensure that the Primary and Secondary voltage ratio has been correctly set (see section on transformer ratios).

5. The CVM-NRG96 analyzer does not respond to communications requests; it does not communicate.

Ensure that the equipment's communication parameters have been correctly set as well as the peripheral number (0 to FF).

6. The CVM-NRG96 analyzer is connected to the Power Studio System and it does not communicate with the PC.

Ensure that the analyzer has been set with a Bus speed of 19,200 bauds.

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CIRCUTOR, SA

Vial Sant Jordi, s/n 08232 Viladecavalls BARCELONA SPAIN Tel. +34 93.745.29.00 Fax. +34 93.745.29.14 web:

http://www.circutor.com

medida@circutor.es

e-mail:

38

Technical assistance:

After sales department Vial Sant Jordi, s/n 08232 Viladecavalls BARCELONA SPAIN e-mail:

medida@circutor.es

M9817250120-03-05A

CIRCUTOR CVM-NRG96 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual