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• Power Analyzer

  CVM-NRG96

  User manual Extended version

• CVM-NRG96

  COMPLETO_NRG96_ING 2

  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.

  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.

  TABLE OF CONTENTS

• CVM-NRG96

  COMPLETO_NRG96_ING 3

  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

  FAQS (Frequently Asked questions) page 36

• CVM-NRG96

  COMPLETO_NRG96_ING 4

  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.

  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.

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

  MAGNITUDE

  UNIT

  L1

  L2

  L3

  III Simple Voltage V

  Compound voltage V

  Current A

  Frequency Hz

  Active power kW

  Reactive Power L kvarL

  Reactive Power C kvarC

  Apparent Power kVA

  Power Factor PF

  Cos Cos Maximum Demand Pd

  Neutral Current IN

  Voltage THD % THD V

  Current THD % THD A

  kWh (consumption and generation) Wh

  kvarh.L (consumption and generation) Wh

  kvarh.C (consumption and generation) Wh

  kVAh (consumption and generation) Wh

  Harmonic decomposition (V and A) * % 15th

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

• CVM-NRG96

  COMPLETO_NRG96_ING 5

  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 GWh in consumed energy.

  — 100 MWh in generated energy.

  Backlit LCD display.

  RS485 communications (Modbus RTU) included.

  Available models:

  CVM-NRG96

  CODE CVM-NRG96 M51800

  CVM-NRG96-ITF M51900

  CVM-NRG96-ITF-RS485-C M51911

  CVM-NRG96-ITF-RS485-C-HAR M51B11

  CVM-NRG96-ITF-Plus-RS485-C M51A11

• CVM-NRG96

  COMPLETO_NRG96_ING 6

  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 VA

  Version Plus:

  — Power supply : 85265 V AC. // 95300 V DC. — Frequency : 50-60
  Hz — Connection board : Terminals 1-2 (Power Supply) — Consumption
  of the equipment : 5 VA

• CVM-NRG96

  COMPLETO_NRG96_ING 7

  B. Maximum voltage in the measurement circuit:

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

  — Frequency : 4565 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 m.secs.

  E. Operating conditions:

  — Operating temperature : -10 C / +50C — 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

  +0.8 x 92

  +0.8 m.m., according to

  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

  2.

  The secondary line for the current transformer shall have a
  minimum cross section of 2.5 mm

  2.

• CVM-NRG96

  COMPLETO_NRG96_ING 8

  Terminal list

  No. Terminal description

  1 Power supply voltage input

  2 Power supply voltage input

  3 Transistor output RL1

  4 Transistor output RL2

  5 RS-485 ( + )

  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

  17 Current input AL3 S1

  1 3

  8 12

  2 5

  10 14 16

  74

  9 13

  6

  11 15 17

  Note: Internally terminals 13, 15 and 17 are joined to terminal
  6 (Neutral). The current inputs… / 5 A are isolated in model
  ITF.

• CVM-NRG96

  COMPLETO_NRG96_ING 9

  Connection diagrams

  A. Three phase system measurement with 4 wire connection (Low
  Voltage) and three external current transformers.

  Power supply AC. // Version Plus DC.

  Power supply Plus

  Terminal

  Description

  1 2

  + V DC. — V DC.

• CVM-NRG96

  COMPLETO_NRG96_ING 10

  B. Three phase system measurement with 3 wire connection (Low
  Voltage) and three external current transformers.

  Power supply AC. // Version Plus DC.

• CVM-NRG96

  COMPLETO_NRG96_ING 11

  C. Three phase system measurement with 3 wire connection using 2
  transformers and three external current transformers.

  Power supply AC. // Version Plus DC.

• CVM-NRG96

  COMPLETO_NRG96_ING 12

  D. Three phase system measurement with 3 wire connection using 2
  voltage transformers and two external current transformers.

  Power supply AC. // Version Plus DC.

• CVM-NRG96

  COMPLETO_NRG96_ING 13

  orese

  t

  max

  min

  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

  COMPLETO_NRG96_ING 14

  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

  COMPLETO_NRG96_ING 15

  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 change it.

  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:

  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.

• CVM-NRG96

  COMPLETO_NRG96_ING 16

  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 key to enter the
  data and 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.

  {{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-

  {O+,{O,-

  {O-+

• CVM-NRG96

  COMPLETO_NRG96_ING 17

  Transformer Voltage Secondary

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

  {M_n{Oifn

  {M_]{{**+

  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.

  {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 .

• CVM-NRG96

  COMPLETO_NRG96_ING 18

  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
  +0+0+0+0{{{{Three phase apparent power kVA III -.-.-.-.{{{{Three
  phase current AIII -0-0-0-0{{{{Current per phase A1 — A2 — A3
  ;;;;»»JbJbJbJb{{{{

  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{`iffiq_^{\s{nqi{^cacnm{

  qbc]b{qcff{c^_hnc`s{nb_{j_lci^{i`{chn_al[ncih{`il{nb_{m_f_]n_^{g[ahcno^_({

  {M_n{J>

  {J?l{{{+/

  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
  .

• CVM-NRG96

  COMPLETO_NRG96_ING 19

  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 key to enter the
  data and 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.

  {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.

  {=fl{j^

  {hi

  {=fl{J^

  {S_m

• CVM-NRG96

  COMPLETO_NRG96_ING 20

  Preferred Magnitude of Energy

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

  {M?n{^?@

  {J;3?{?h_l

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

  Magnitude of Energy Direction Symbol

  Active Energy Consumption kWh Inductive Reactive Energy
  Consumption kvarLh Capacitive Reactive Energy Consumption kvarCh
  Apparent Energy Consumption kVAh Active Energy Generation (-) — kWh
  Inductive Reactive Energy Generation (-) — kvarLh Capacitive
  Reactive Energy Generation (-) — kvarCh Apparent Energy Generation
  (-) — kVAh

  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{^Cmj

  {{i«{{{**

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

• CVM-NRG96

  COMPLETO_NRG96_ING 21

  ** 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 key to enter the
  data and 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

  {=fl{?h_l

  {s_m

  {m_n{B[l

  {nB^

  {m_n{B[l

  {^

• CVM-NRG96

  COMPLETO_NRG96_ING 22

  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 key to enter the
  data and 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^_.

  {Ion{O[l

  {=i^_{{{**

  Setting pulse per n kWh or kvarh Energy code table:

  Magnitude Symbol Code

  Active Energy III kWh III 31

  Inductive Reactive Energy III KvarLh III 32

  Capacitive Reactive Energy III KvarCh III 33

  Apparent Energy III kVAh III 44

  Active energy Generated III kWh III (-) 45

  Inductive Reactive Energy Generated III KvarLh III (-) 46

  Capacitive Reactive Energy Generated III KvarCh III (-) 47

  Apparent Energy Generated III kVAh III (-) 48

• CVM-NRG96

  COMPLETO_NRG96_ING 23

  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 wattsh/pulse

  **+(/** 1.5 kilowattsh/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 key to enter the
  data and 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 A 1 02 Active Power L1 kW 1 03 Reactive Power L/C L1
  KvarL/C 1 04 Power Factor L1 PF 1 05 % THD V L1 THD V1 25 % THD A
  L1 THD A1 28 Simple Voltage L2 V 2 06

  Current L2 A 2 07 Active Power L2 kW 2 08 Reactive Power L/C L2
  KvarL/C 2 09 Power Factor L2 PF 2 10 % THD V L2 THD V2 26 % THD A
  L2 THD A2 29

• CVM-NRG96

  COMPLETO_NRG96_ING 24

  Magnitude Phase Symbol L1 Code

  Simple Voltage L3 V 3 11

  Current L3 A 3 12 Active Power L3 kW 3 13 Reactive Power L/C L3
  KvarL/C 3 14 Power Factor L3 PF 3 15 % THD V L3 THD V3 27 % THD A
  L3 THD A3 30

  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 cos three phase cos 19 Inductive
  Power III kvarL III 17 Power Factor III PF III 20

  Capacitive Power III kvarC III 18 Frequency Hz 21

  Active Energy kWh 31 L1- L2 Voltage V 12 22

  React. Energy Inductive KvarhL 32 L2-L3 Voltage V 23 23

  React. Energy Capacit. KvarhC 33 L3-L1 Voltage V 31 24

  Apparent Power III kVA III 34

  Maximum Demand Md (Pd) 35 Maximum Demand L1 Md (Pd) 35*

  Current III AIII 36 Maximum Demand L2 Md (Pd) 42*

  Neutral Current IN 37 Maximum Demand L3 Md (Pd) 43*

  * 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

• CVM-NRG96

  COMPLETO_NRG96_ING 25

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

  using the key, the maximum value, minimum value and the delay
  (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

  of the transistor.

  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 key moving on to
  the next

  setting step. Once the delay has been set, the key must be
  pressed entering the data and ending the configuration.

  MIN + MAX +

  max > min

  ON OFF ON

  ====== 0 Min Max

  MIN + MAX +

  max < min

  OFF ON OFF

  ============== 0 Max Min

  MIN — MAX + ON OFF ON

  ======= Min 0 Max

  MIN + MAX —

  OFF ON OFF

  ============= Max 0 Min

  MIN — MAX —

  max > min

  ON OFF ON

  ===== Min Max 0

  MIN — MAX —

  max < min

  OFF ON OFF

  ================ Max Min 0

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

  {Ion{Fi

  {***(*

  {Ion{Bc

  {***(*

  {Ion{^_f[

  {****

• CVM-NRG96

  COMPLETO_NRG96_ING 26

  Setting COMMUNICATION SETUP *(Only for models with
  communication) 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 keys have to
  be pressed until 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»

  {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.

• CVM-NRG96

  COMPLETO_NRG96_ING 27

  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 key to enter the
  data and 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{hj_l

  {{**+

  {m_n{=^_`

  {hi

  {M_n{=^_`

  {s_m

• CVM-NRG96

  COMPLETO_NRG96_ING 28

  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

• CVM-NRG96

  COMPLETO_NRG96_ING 29

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

  {m_n{mnij

  {\cnm{{{{+

  {M_n{mnij

  {\cnm{{{{,

• CVM-NRG96

  COMPLETO_NRG96_ING 30

  2. Protection of measurement SETUP

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

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

  The display shows on the screen

  To write the protection password +,-.+,-.+,-.+,-., 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 password protection has been set, the key must be
  pressed, 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.

  {m_n{Oj

  {ohfi

  {M_n{OJ

  {Fi]

  {m_n{Oj

  {J;MM{****

  {M_n{OJ

  {J;MM{+,-.

• CVM-NRG96

  COMPLETO_NRG96_ING 31

  MODBUS Protocol

  The CVM-NRG96 power analyzers communicate by using MODBUS
  protocol,

  described below:

  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.

• CVM-NRG96

  COMPLETO_NRG96_ING 32

  MODBUS memory map

  MODBUS VARIABLES

  Magnitude Symbol Instant Maximum Minimum Unit

  Voltage Phase V L1 00-01 60-61 C0-C1 V x10

  Current A L1 02-03 62-63 C2-C3 mA

  Active Power kW L1 04-05 64-65 C4-C5 w

  Reactive Power Kvar L1 06-07 66-67 C6-C7 w

  Power Factor PF L1 08-09 68-69 C8-C9 x 100

  Voltage Phase V L2 0A-0B 6A-6B CA-CB V x10

  Current A L2 0C-0D 6C-6D CC-CD mA

  Active Power kW L2 0E-0F 6E-6F CE-CF w

  Reactive Power Kvar L2 10-11 70-71 D0-D1 w

  Power Factor PF L2 12-13 72-73 D2-D3 x 100

  Voltage Phase V L3 14-15 74-75 D4-D5 V x10

  Current A L3 16-17 76-77 D6-D7 mA

  Active Power kW L3 18-19 78-79 D8-D9 W

  Reactive Power Kvar L3 1A-1B 7A-7B DA-DB W

  Power Factor PF L3 1C-1D 7C-7D DC-DD x 100

  Active Power III kW III 1E-1F 7E-7F DE-DF w

  Inductive Power III KvarL III 20-21 80-81 E0-E1 w

  Capacitive Power III KvarC III 22-23 82-83 E2-E3 w

  Cos III Cos III 24-25 84-85 E4-E5 x 100

  Power Factor III PF III 26-27 86-87 E6-E7 x 100

  Frequency Hz 28-29 88-89 E8-E9 Hz x 10

  Voltage Line L1-L2 V12 2A-2B 8A-8B EA-EB V x10

  Voltage Line L2-L3 V23 2C-2D 8C-8D EC-ED V x10

  Voltage Line L3-L1 V31 2E-2F 8E-8F EE-EF V x10

  % THD V L1 %THD VL1 30-31 90-91 F0-F1 % x 10

  % THD V L2 %THD VL2 32-33 92-93 F2-F3 % x 10 % THD V L3 %THD VL3
  34-35 94-95 F4-F5 % x 10 % THD A L1 %THD AL1 36-37 96-97 F6-F7 % x
  10

  % THD A L2 %THD AL2 38-39 98-98 F8-F9 % x 10 % THD A L3 %THD AL3
  3A-3B 9A-9B FA-FB % x 10

  Apparent Power III KvaIII 42-43 A2-A3 102-103 w

  Maximum Demand Md (Pd) 44-45 A4-A5 104-105 w/VA/mA

  Three Phase Current (average) A_AVG 46-47 A6-A7 106-107 mA

  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

• CVM-NRG96

  COMPLETO_NRG96_ING 33

  MODBUS VARIABLES

  Magnitude Symbol Instant Maximu

  m Minimum

  Unit

  Active Energy kWh III 3C-3D 9C-CD FC-FD wh

  Inductive Reactive Energy kvarLh III 3E-3F 9E-9F FE-FF wh

  React. Energy Capacitive kvarCh III 40-41 A0-A1 100-101 wh

  Apparent Energy kVAh III 56-57 B6-B7 116-117 wh

  Active energy Generated kWh III (-) 58-59 B8-B9 118-119 wh

  Inductive energy generated kvarLh III (-) 5A-5B BA-BB 11A-11B
  wh

  Capacit. Energy Generated kvarCh III (-) 5C-5D BC-BD 11C-11D
  wh

  Apparent Energy Generated kVAh III (-) 5E-5F BE-BF 11E-11F
  wh

  *Recordings available in HAR model MODBUS VARIABLES

  Magnitude Symbol L1 L2 L3 Unit

  Harmonic decomposition in VOLTAGE Instant

  RMS Current V 2AE-2AF 2CC-2CD 2EA-2EB Vx10

  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
  CA-CB 2E8-2E9 306-307 % Harmonic decomposition in CURRENT
  Instant

  RMS current A 1F4-1F5 212-213 230-231 mA

  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 %

• CVM-NRG96

  COMPLETO_NRG96_ING 34

  Example of a MODBUS question 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).

• CVM-NRG96

  COMPLETO_NRG96_ING 35

  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.

  A1

  A2

  5

  1

  2

  B ( — )

  A ( + )

  C GND

  5 12

  75

  2357

  32

  RS-485

  RS-232

  CONVERTIDOR

  DB-9

  RS-232 / RS-485

  PC

  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.

  RS-232 / RS-485 CONVERTER

• CVM-NRG96

  COMPLETO_NRG96_ING 36

  FAQs

  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 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.

• CVM-NRG96

  COMPLETO_NRG96_ING 37

  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.

• CVM-NRG96

  COMPLETO_NRG96_ING 38

  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 e-mail: [email protected]

  Technical assistance: After sales department Vial Sant Jordi,
  s/n 08232 Viladecavalls BARCELONA SPAIN e-mail:
  [email protected]