SUPPLY NETWORK ANALYZER
CVM-BDM SERIES
INSTRUCTION MANUAL
( M98153001-03 / 06C )
(c)
CIRCUTOR S.A.
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USER'S MANUAL page
1.- BASIC INSTRUCTIONS ........................................................................ 3
1.1.- Delivery spot check............................................................................... 3
1.2.- Connection procedures......................................................................... 3
2.- MAIN CHARACTERISTICS................................................................... 4
2.1.- Other features....................................................................................... 6
2.2.- Types of CVM-BDM.............................................................................. 7
3.- INSTALLATION AND STARTUP ........................................................... 7
3.1.- Installation............................................................................................. 8
3.2.- CVM-BDM Connection terminal (see side labels)............................... 10
3.3.- Connection drawing for the CVM-BDM: .............................................. 11
4.- OPERATION MODE............................................................................ 15
5.- SETUP PROCEDURE......................................................................... 17
5.1.- Phase-to-Phase or Phase-to-Neutral voltages.................................... 18
5.2.- Voltage transformation ratio................................................................ 19
5.2.1.- Voltage Transformer Primary........................................................ 19
5.2.2.- Voltage Transformer Secondary ................................................... 20
5.3.- Current Transformer Primary .............................................................. 20
5.4.- Network specifications ........................................................................ 21
5.4.1.- Rated voltage................................................................................ 21
5.4.2.- Rated frequency............................................................................ 21
5.5.- Integration period of voltage and frequency signals............................ 22
5.6.- Parameter SETUP .............................................................................. 23
5.7.- First Page SETUP............................................................................... 25
5.8.- Maximum power demand.................................................................... 26
5.9.- DATE / TIME SETUP.......................................................................... 27
5.10.- Clearing energy counters.................................................................. 28
5.11.- Memory SETUP................................................................................ 29
5.12.- THD or D setting ............................................................................... 30
5.13.- Additional screen with the relay output.
............................................ 31
5.14.- Additional screen with the 4 - 20 mA outputs.
................................... 36
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6.- DATA COLLECTION INTO MEMORY................................................. 39
6.1.- Characteristics .................................................................................... 39
6.2.- File types ............................................................................................ 39
6.3.- Memory capacity................................................................................. 40
6.4.- Setting the memory up from PC.......................................................... 40
7.- CONTRAST......................................................................................... 41
8.- SPECIFICATIONS............................................................................... 42
9.- SAFETY CONSIDERATIONS.............................................................. 43
10.- MAINTENANCE................................................................................... 44
11.- TECHNICAL SERVICE........................................................................ 44
12.- CVM-BDM... COMMUNICATIONS ...................................................... 45
12.1.- ! To take into account:....................................................................... 45
12.2.- RS-485 type connection to a RS-232 type input of a PC .................. 46
12.3.- MODBUS © protocol........................................................................ 47
13.- APPENDIX........................................................................................... 53
13.1.- Appendix A: Four quadrant measuring method in the CVM-BDM..... 53
13.2.- Appendix B: Second SETUP of the CVM-BDM................................. 54
13.3.- Appendix C: Internal memory reading and setting procedures ........ 56
13.3.1.- Description.................................................................................. 56
13.3.2.- Internal memory setting for data collection purposes.................. 57
13.3.2.1.- Recording period................................................................... 57
13.3.2.2.- Parameters to be saved into memory ................................... 57
13.3.2.3.- Trigger .................................................................................. 58
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1.- BASIC INSTRUCTIONS
1.1.- Delivery spot check
This manual is issued to help all the CVM-BDM users to install and use it in
order to get the best from it. After receiving the unit please check the following points:
(a) Does this device corresponds to your order specifications?
(b) Check if any damage was done during the shipment process.
(c) Verify that it includes *One instruction manual .
(d) CD with PC software (Power-Vision).
1.2.- Connection procedures
The manual you hold in your hands contains information and
warnings about the CVM-BDM that the user should respect in order
to guarantee a proper operation of all the instrument functions and
keep its safety conditions.
Before connecting the instrument to the mains verify the following:
(a) Power supply :
230 V a.c. Power supply Va.c. ( Single phase ) 50 ... 60 Hz
(b) Maximum measuring voltage:
Standard: 500 V a.c. phase-neutral / 866 V a.c. between phases
A special model for 110 V measuring is available:
100 V a.c. phase-neutral / 173 V a.c. between phases
(c) Maximum measuring current: Transformer of In / 5 A a.c.
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2.- MAIN CHARACTERISTICS
The CVM-BDM power meter is a programmable measuring instrument,
offering several operation possibilities selectable in its SETUP option.
This analyzer is also equipped with an internal memory to record main
electrical parameters of the monitored power system.
Before power supplying the instrument, read the CONNECTIONS and SETUP
sections and choose the most suitable operation mode for getting your desired data.
The CVM-BDM is an instrument which measures, calculates, displays and
memorizes all the main electrical parameters at any electrical network (balanced or
not). The measuring is true RMS value, through three a.c. Voltage inputs and three
a.c. Current inputs (from Current Transformers .../ 5A).
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By means of an internal microprocessor it simultaneously measures:
Parameter L1 L2 L3 III
Voltage (phase-neutral) x x x x
Voltage (phase-phase) x x x x
Current x x x x
Neutral current x
Active power x x x x
Reactive power L x x x x
Reactive power C x x x x
Power factor x x x x
Apparent power x
Frequency x
Power demand x
Voltage THD x x x
Current THD x x x
Individual harmonic
current content (Up to the 15
th
)
xx xx xx
Individual harmonic
voltage content (Up to the 15
th
)
xx xx xx
Flicker x x x
Available: x: Display and communications xx: Communications
Parameter CVM-BDM
Date/Time dd/mm/yy hh:mm:ss TIME
Active energy ( two indep. meters: demanded energy (+) and
generated energy (--) )
kWh (+) and (--)
Reactive energy (inductive), two indep. meters kvarh.L (+) and (--)
Reactive energy (capacitive), two indep. meters kvarh.C (+) and (--)
CVM-BDM permits above enumerated parameters to be view in a three-line
alphanumeric display. Three parameters are shown in every screen.
(a) Phase-to-neutral or phase-to-phase voltage of every phase.
(b) User-selectable parameters according to the model (see attached table).
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) And also the MAXIMUM POWER DEMAND: The power demand is
integrated during a prefixed period.
You can select:
a) The parameter to be controlled (it can measure active power kW,
apparent power kVA or three phase average current AIII).
b) The demand period (1 to 60 min.).
This power demand function works with sliding window: shows the
accumulated demand over the last period from "now".
---------------------------------------------------------------------------------------------
) CVM-BDM is equipped with an internal memory for the collection of main
parameters from the electric network.
By means of the PC see, the user can select the parameters to be save into
memory among all measured by the power meter (instantaneous, maximum and
minimum values). You can also set the data recording period.
2.1.- Other features
- DIN rail mounting device with low dimensions.
- True RMS value measurements.
- Internal memory (1Mbyte)
- Measurements in all four quadrants.
- Power demand
- Memorizes Maximum and Minimum values.
- 2 leds for the indication of CPU and communications performance.
- Harmonic distortion measurement (THD-V & THD-A ).
- Individual harmonic current content (Up to the 15
th
)
- Flicker measurement (PST & WA)
- Neutral current calculation.
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2.2.- Types of CVM-BDM
Available standard CVM-BDM types are:
CVM-BDM Type Description
7 70 290 CVM-BDM Communications, internal memory and data display
7 70 291 CVM-BDM-C2 CVM-BDM +2 relay outputs
7 70 292 CVM-BDM-C420 CVM-BDM +1 relay output + 1 analog output
7 70 293 CVM-BDM-420 CVM-BDM + 2 analog outputs
Different CVM-BDM... provide more parameters to be displayed (additional SETUP).
3.- INSTALLATION AND STARTUP
The manual you hold in your hands contains information and
warnings that the user should respect in order to guarantee a proper
operation of all the instrument functions and keep its safety conditions.
The instrument must not be powered and used until its definitive
assembly on the cabinet’s door.
Whether the instrument is not used as manufacturer’s specifications, the
protection of the instrument can be damaged.
When any protection failure is suspected to exist (for example, it presents
external visible damages), the instrument must be immediately powered off. In this
case contact a qualified service representative.
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3.1.- Installation
Before applying AC power to the, check following points :
a.- Supply voltage :
- Power supply Va.c. ( Single phase ) 50 ...60 Hz
230 V a.c.
- Frequency : 50 ... 60 Hz
- Supply tolerance : + 10 % / --15 %
- Connection terminals : Terminals 1 - 28
- Instrument burden : 6 VA
b.- Maximum voltage at the voltage measuring circuit:
Standard: 500 V a.c. phase-neutral / 866 V c.a. between phases
A special model CVM-BDM for 110 V measurement is also available:
100 V a.c. phase-neutral / 173 V a.c. between phases
c.- Maximum admissible current : Transformer of In / 5 A a.c.
d.- Operation conditions :
- Operating temperature : 0 to 50ºC
- Humidity : 25 to 80 % R.H. not-condensing
e.- Safety : Designed to meet protection class II as per EN 61010.
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Installation :
The instrument is to be fit onto a DIN 46277 (EN 50022) rail . All connections
keep inside the cabinet.
Note that with the instrument powered on, the terminals could be dangerous to
touching and cover opening actions or elements removal may allow accessing
dangerous parts. Therefore, the instrument must not be used until this is completely
installed.
The instrument must be connected to a power supply circuit protected with gl
type (IEC 269 ) or M type fuses rated between 0.5 and 2 A. This circuit should be
provided with a circuit breaker or any equivalent element to connect or disconnect the
instrument from the power supply network. The supply and measuring voltage circuits
will be both connected through a wire with a minimum cross-section of 1 mm2.
The line of the current transformer secondary will have a minimum crosssection of 2,5 mm2.
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3.2.- CVM-BDM Connection terminal (see side labels)
Terminal No Designation Concept
1 - 28 A1 - A2 supply voltage : 230 V a.c.
27 - 26 dep. model Relay output No. 1 / 1 output of 4- 20 mA
25 - 24 dep. model Relay output No. 2 / 2 output of 4- 20 mA
23 - 19
Termination
resistor (RT)
240 Ω resistor: adaptation of the line final
impedance ( bridge 23 -- 22 and 19 -- 20 )
22
21
20
+
GND
--
COM1 CVM-B : RS-485 connection to the PC
22 + --------------> 1 (+)
21 GND --------------> 5 converter
20 -- ---------------> 2 (--) RS-485/RS-232
16
17
18
No used.
No used.
No used.
15 N NEUTRAL
14 VL3 Voltage phase 3
13 VL2 Voltage phase 2
12 VL1 Voltage phase 1
11 - 10 I L3: s1 - s2 Current phase L3 .../ 5 A
9 - 8 I L2: s1 - s2 Current phase L2 .../ 5 A
7 - 6 I L1: s1 - s2 Current phase L1 ... / 5 A
NOTE: Current inputs are isolated in the CVM-BDM model
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3.3.- Connection drawing for the CVM-BDM:
a.- CVM-BDM: Three-phase network.- 4 wires (low voltage) :
S2
P2
S1
P1
S2
P2
S1
P1
S2
P2
S1
P1
A2
A1
N
L1
L2
L3
N
CVM-BDM
1
28
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b.- CVM-BDM: 3 current transformers + 2 voltage transformer :
A2
A1
S2
P2
L1
L2
L3
POWER
SUPPLY
CVM-BDM
S1
P1
S2
P2
S1
P1
S2
P2
S1
P1
1
6 7 8 9 10 11 12 13 14
S1
P1
S2
P2
S1
P1
S2
P2
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c.- CVM-BDM: 2 current transformers + 2 voltage transformer.
S2 of the current transformer grounded to earth
A2
A1
S2
P2
L1
L2
L3
POWER
SUPPLY
CVM-BDM
S1
P1
S1
P1
S2
P2
S1
P1
S2
P2
S2
P2
S1
P1
1
6 7 8 9 10 11 12 13 14
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S1 of the current transformer grounded to earth
A2
A1
S2
P2
L1
L2
L3
POWER
SUPPLY
CVM-BDM
S1
P1
S1
P1
S2
P2
S1
P1
S2
P2
S2
P2
S1
P1
1
6 7 8 9 10 11 12 13 14
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4.- OPERATION MODE
The instrument has a display with three lines (10 characters every line).
When you switch on the power supply of the CVM-BDM you will see on the display:
After some seconds the instrument is ready to work, showing one of the
possible screens. The display indicates the parameter presently shown.
display
The first display shows the voltage of phase L1 (V1), the voltage of phase L2
(V2) and the voltage of phase L3 (V3).
220 V1
220 V2
220 V3
If you press the "display" key, we are now reading the CURRENT values for
each phase (A1, A2, A3). However, this screen can be configured in order to display
other different parameters.
When pressing again the "display" key, we will see on display the three
previously programmed parameters. If you press the "display" key again you can
see from 1 to 15 screens depending of the previous setup.
Card Circ
xxxxx utor
xxxx yyy
Where:
xxxx = hardware configuration.
yyy = Versión software
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max
Pressing the "max" key, the maximum values for the parameters being shown
appear in the displays.
xxxx MAX
xxxx MAX
xxxx MAX
This function is only valid while you keep pressing the "max" key. If you stop
pressing the key the instantaneous values appear again.
min
Pressing the "min" key, the minimum values for the parameters being shown
appear in the displays.
xxxx MIN
xxxx MIN
xxxx MIN
This function is only valid while you keep pressing the "min" key. If you stop
pressing the key the instantaneous values appear again.
Reset
Pressing the "reset" key the system is reset. This is equivalent to switch off
the power supply of the instrument. The stored maximum and minimum values will be
automatically deleted from the internal memory.
If you are in the setup process and press the "reset" key, you exit it without
saving any modification that you have done and making a reset of the system.
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5.- SETUP PROCEDURE
The setup procedure of the CVM-BDM is performed by means of several
SETUP options.
) For accessing the setup menu the keys max & min must be
simultaneously pressed once the instrument is at the main screen.
When accessing the SETUP, the message "SETUP unloc " (1) is shown for
some seconds on screen, or, otherwise, the message "SETUP loc" (2).
(1) Setup UNLOC (SETUP unlocked ) : when the SETUP is accessed,
configuration parameters can be either visualized and modified.
(2) Setup LOC
(SETUP locked ) : when the SETUP is accessed,
configuration parameters can be visualized but cannot be modified .
Once into the SETUP, use the keyboard to select different options and enter
required variables:
- The key Display validates de value and pass to the next menu.
- The key MAX permits to select among different options in a menu, or to
increase a digit when a variable is being entered.
- The key MIN permits to move the cursor along the digits.
Different options are following shown in a sequential mode:
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