Contrel EMC-D3b User manual

EMC-D3b EMC-D3b-485 instructon manual IM450-U v3.1 page 1
INSTRUCTION MANUAL
IM450-U v3.1
EMC-D3b ENERGY MULTIFUNCTION COUNTER
EMC-D3b-485
AVAILABLE MODELS
EMC-D3b: 3-phase energy counter with 7+1 digit display. 1 digital
input and two digital pulse output for kWhr and kVArhr.
EMC-D3b-485: 3-phase energy counter with 7+1 digit display, 1
digital input, two digital pulse output for kWhr and kVArhr, EIA-
RS485 serial communication port, Modbus RTU protocol.
Both are manufactured in DIN rail mounting case 6 modules 17.5
mm.
INTRODUCTION
The EMC-D3b models allows the local or remote counting of the
energy, with the help of a serial interface.
It is possible to set the instrument to count in 3 differents mode
(Normal / Total and partial / Timeband).
Also the instrument is equipped with a digital input which can cover differents function. See the digital input section for
more information.
The auxiliary power supply is taken from same Voltage inputs (VL1 and VL2), used for measuring.
It’s available as option the instrument for single phase networks.
OPTIONS and ACCESSORIES
options: - internal CT's ( not for direct line insertion) (order with -t suffix)
- current inputs for ... /1A current transformer (order with /1A suffix)
- current sensor for low current measures (Max 15 Amp) (specify when ordering)
- power supply and measuring voltages other than the standard (specify when ordering)
- power supply separated from measuring voltage (specify when ordering)
- single phase network ( power supply is taken from VL1 and neutral) (specify when ordering)
MEASURED PARAMETERS
Parameters showed in counter mode Unit of measure Identifying abbreviations
three phase system active energy [kWhr] kWh
three phase system reactive energy [kVArhr] kVArh
three phase system apparent energy [kVAhr] kVAh
Parameters showed in meter mode unit of measurement initial identification
phase voltages [V-kV] V L1-N V
L2-N V L3-N
phase to phase system voltages [V-kV] V L1-L2 V
L2-L3 V L3-L1
phase currents [A-kA] A L1 A
L2 A L3
phase power factors PF L1 PF
L2 PF L3
phase active powers [W-kW-MW] W L1 W
L2 W L3
phase reactive powers [VAr-kVAr-MVAr] VAr L1 VAr
L2 VAr L3
phase apparent powers [VA-kVA-MVA] VA L1 VA
L2 VA L3
frequency [Hz] Hz
L1
These parameters are available only on EMC-D3b-485 model and readable only by RS485 interface.
Peak, average and max demand value unit of measurement Initial identification
maximum phase voltages [V-kV] V L1-N ma
x
V
L2-N ma
x
V
L3-N ma
x
maximum phase currents [A-kA] A L1 ma
x
A
L2 ma
x
A
L3 ma
x
maximum three-phase powers [W-VAr-VA (k-M)] W ma
x
VAr ma
x
VA ma
x
maximum average phase currents (maximum demand) [A-kA] I L1 max
(
av
g)
I
L2 max
(
av
g)
I
L3 max
(
av
g)
maximum average three-phase powers (maximum demand) [W-VAr-VA (k-M)] W max
(
av
g)
VAr max
(
av
g)
VA max
(
av
g)
average phase currents [A-kA] A L1 av
g
A
L2 av
g
A
L3 av
g
average three-phase powers [W-VAr-VA (k-M)] W av
g
VAr av
g
VA av
g

EMC-D3b EMC-D3b-485 instructon manual IM450-U v3.1 page 2
INSTALLATION
Warnings for the users
Read carefully the instructions in this manual before installing the present instrument.
The instrument described in this manual is intended for being used only by properly trained staff.
Safety
This instrument has been manufactured and tested according to EN 61010-1 standards. In order to maintain these conditions and to
ensure safe operation, the users must follow the instructions of this manual.
When the instrument is received, before beginning installation, check that it’s still intact and no damage has been suffered during
transport. Before starting installation make sure that the operating voltage and mains voltage are compatible with the device
instructions.
The instrument power supply must not be earthen. Only qualified and authorised staff must carry out maintenance and/or repair. Should
it be considered that there is a safety loss during operation, the instrument must be disconnected and precautions taken against
accidental use.
Operation is no longer safe when: - The instrument doesn't work. / - The measured value are obviously wrong or
unreasonable / - There is clearly visible damage. / - After serious damage incurred during transport. / - After a storage under
unfavourable conditions.
An external protection should be foreseen, by means of a 0.5 A 250V fuse at the voltage inputs. Use adequate cables for the working
current and voltage, with a cross section of 0.5 to 2.5 mm2.
CONNECTION
S2 I
2I3
S2S1 S1
COM DI- DI+B- CO A+ DO1 DO2
V L3 V L2
V L1 N
S1S2
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36
CURRENT INPUTS VOLTAGE INPUTS
kWh
,T2
T1
kVArh
input In k/5A 3x(50-500V) 50-60Hz
output 2 digital pulses/kWh-kVArh 100÷0,1
1 optional serial port EIA485
SET
energy
EMC-D3b
energy
multifunction
counter
8888888 8

EMC-D3b EMC-D3b-485 instructon manual IM450-U v3.1 page 3
For a correct use of the device, the wiring diagram contained in the present manual, must be respected.
The connections are available on the screw terminal:
- auxiliary power supply:
The power supply is take from voltage inputs.
Are available 5 different auxiliary supply:
0 - 115V = 100-130V 50-60Hz (N-L1) (on request by single phase option)
0 - 230V = 220-240V 50-60Hz (N-L1) (on request by single phase option)
0 - 400V = 380-415V 50-60Hz (L1-L2)standard model
0 - 230V = 220-240V 50-60Hz (L1-L2) (on request)
0 - 115V = 100-130V 50-60Hz (L1-L2) (on request)
It’s possible, for example, to give an auxiliary power supply between phase and neutral, in a 4 wires system, or phase-
phase in a 3 wires system, without neutral or from a VT in a medium voltage application.
In the standard version the voltage is 400V and it’s taken between the phases L1-L2.
In the following table it’s possible to see the measurable voltage depending of the type of power supply.
power supply terminals rated voltage range of measurable voltage
VL1 - VL2
(phase to phase power supply for 3-phase networks)
400V 300÷500V phase to phase (175÷290V phase-neutral)
230V 175÷290V phase to phase (130÷170V phase-neutral)
110V 85÷145V phase to phase (50÷85V phase-neutral)
VL1-N
(phase-neutral power supply for single phase networks) 230V 175÷290V phase-neutral
110V 100÷170V phase-neutral
The standard version allows to apply the instrument at all the three-phase network 400V with or without neutral supplied.
For example for application on single phase 230V will need the L1-N / 230V. while for applications in medium voltage (for
example using external voltage transformer 15 / 0.1 kV phase to phase) will need the version L1-L2 / 110V.
- measuring voltage inputs:
4 screw terminals are available for the 3 phase plus neutral system network. The maximum voltage between phase to
phase must not overcome 500 Vrms., depending always on the instrument's power supply.
In case of three phase application with or without neutral not distributed, it is enough not to connect the terminal N.
The transformation ratio of the external Potential Tranformer’s can be set on the instrument's SETUP menu (see SeT
VT ratio.
- measuring current inputs:
6 screw terminals are available for the connection of the external CT with secondary 5A. It is also possible to use 2 CT in
a three phase system (3Phase Aaron wiring system).
It’s compulsory to use external CT’s.
The transformation ratio of the external CT's can be set on the instrument's SETUP menu.
NOTE: It’s fundamental to respect the correct phase sequence. The connections between current and voltage phase inputs must not be
inverted (for example, CT placed on phase L1 must correspond to the I1 input) and at the same time it’s not correct to invert the S1 and
S2 terminals considering that the energy metering won't be reliable.
- digital input
On the terminal board 30 (DI+) and 32 (DI-) is available the digital input.
This input can operate in three differents mode:
- Sync: can recognize pulse (minimum time = 200 mS) to syncronize the internal average period timer to an external
device; this property is available with the energy count mode ( refer to SETUP section) is set to
'TOTAL/PARTIAL' or to 'NORMAL';
- Reset when a voltage pulse of minimum 1 second is applied, perform the reset of the only PARTIAL energy
counters of each energy type (kWhr, kVArhr, kVAhr); this property is available with the energy count mode
(refer to SETUP section) is set to 'TOTAL/PARTIAL';
- Disabled No operation is done depending the digital input status.
When the energy count mode ( refer to SETUP section) is set to 'TIME.BAND’ the counting is divided in T1 or T2 band
depending the status of digital input; SETUP of digital input is disabled;
Timeband T1 is selected when no voltage is applied, T2 when the input is powered
Each parameters (kWh, kVArh and kVAhr) have two counters T1 and T2, in which the energy is counted depending the
status of digital input.

EMC-D3b EMC-D3b-485 instructon manual IM450-U v3.1 page 4
WIRING DIAGRAM
THREE-PHASE INSERTION
on line with 3 wires (without neutral or with neutral
not supplied) the N terminal must not be connected
INSERTION ON THREE PHASE LINE
WITH 3 OR 4 WIRES
INSERTION ON THREE PHASE LINE
WITH 3 WIRES AND 2 CT
(insertion AARON)
*the voltage insertion with 2 VT is
possible only for the version with
internal CT
INSERTION ON THREE PHASE LINE
WITH 4 WIRES AND 3 VT
BALANCED THREE PHASE LINE
LOAD
P1
P1
P1
P2
S1
S1
S1
S2
N
L1
L2
L3
S2
S2
S2
S1
S1
S1
I1
I2
I3
V L1
V L2
V L3
N
measure current inputs
measure voltageinputs
EMC
P1
P1
P2
S1
S1
S2
L1
L2
L3
S2
S2
S2
S1
S1
S1
I1
I2
I3
V L1
V L2
V L3
N
EMC
measure current inputs
measure voltageinputs
LOAD
LOAD
P1
S1
N
L1
L2
L3
S2
S2
S2
S1
S1
S1
I1
I2
I3
V L1
V L2
V L3
N
measure current inputs
measure voltageinputs
EMC
N
L1
L2
L3
VL1
VL2
VL3
N
EMC
measurevoltage inputs
LOAD
P1
P1
P1
P2
S1
S1
S1
S2
S2
S2
S2
S1
S1
S1
I1
I2
I3
measure current inputs

EMC-D3b EMC-D3b-485 instructon manual IM450-U v3.1 page 5
SINGLE-PHASE INSERTION
DIGITAL I/O
P1 P2
S1 S2
N
L
INSERTION ON SINGLE PHASE LINE
if the multimeters are used on single phase line, the
measure are referred at the L1 phase.
The others data displayed relatives at value of three phase
system are not to consider.
V L1
V L2
V L3
N
EMC
measurevoltage inputs
LOAD
S2
S2
S2
S1
S1
S1
I1
I2
I3
measure current inputs
NOTE:
output DO1 for ACTIVEENERGY pulses
output DO2 for REACTIVE ENERGY pulses
EMC
D igi ta l O u tp ut
Max 150mA
Max 230Vac/dc
DIGITAL OUTPUTS
From 80 to 250 Vac
From 90 to 250 Vdc
EMC
DIGITAL INPUT

EMC-D3b EMC-D3b-485 instructon manual IM450-U v3.1 page 6
FRONT PANEL DESCRIPTION – KEYS
DESCRIPTION:
A:Push-button key for selecting the energy visualisation / for decreasing values when setting at SETUP.
B:Push-button key for selecting the energy visualisation / for increasing values when setting at SETUP.
C:Push-button key to reach the programming mode; the associated LED go on to advise that the SETUP mode is active.
NOTE: pressing both A key and B key for at least 5 second, the display change to visualize instantaneous
measures (voltage, current and so on). Refer to section Measure Visualization.
D:LED for indication of the T1 time band energies. Should it be blinking, it means that the energy counting is being
accumulated on time band 1.
E:LED for indication of the T2 time band energies. Should it be blinking, it means that the energy counting is being
accumulated on time band 2.
F:LED indicating energy counting. The frequency of blinking is proportional to the energy displayed.
G:LED for indication of reactive energy counting.
H:LED for indication of active energy counting.
NOTE: when both LED G and H are OFF, is displayed the apparent energy counters.
INSTRUMENT'S PROGRAMMING MENU (SETUP)
By pressing the Ckey we get to the programming of the instrument.
The programs, confirmed with the Ckey are kept memorised, whilst the performed modifications won't be kept
memorised, if they have not been confirmed with the Ckey. Once that 16 seconds have elapsed from the last pressure to
any key, the instrument comes back to energies visualisation.
The instrument's parameters can be programmed with the SETUP menu or either cancelling the energy counters with
the RESET menu.
kWh
,
T2
T1
kVArh
input In k/5A 3x(50-500V) 50-60Hz
output 2 digital pulses/kWh-kVArh 100÷0,1
1 optional serial port EIA485
energy
EMC-D3b
energy
multifunction
counter
A
B
C
D
E
F
G
H

EMC-D3b EMC-D3b-485 instructon manual IM450-U v3.1 page 7
SET GENERAL PARAMETER (SET UP)
Entry to menu: seT UP seT Up
RESETEN
COM 485
CT Increase
Set CT ratio
from 1to 3000 Decrease
VT Increase
Set VT ratio
from 0.1 to 400.0 Decrease
Set Energy count mode E.NORMAL
E.TOT.PAR
TIME.BAND
Set type of Digital Input DI =T.SYNC
Di =Reset
DI =DI saB
T.AVR Increase
Set average time
From 1to 30 minutes Decrease
Set connection 3PH.UNBAL
type 3ph.BALAN
1PH. L1-N
Set wiring connection -3-
type
-4-
Set synchronism SYNC. 60
type SYNC. 50
SYNC. L1
PUL 10.0 kW-kVAr / pulse
Set pulse weight 01.0 kW-kVAr / pulse
00.1 kW-kVAr / pulse
0.01 kW-kVAr / pulse
TPL 100 mS
Set the duration pulse 200 mS
300 mS
400 mS
500 mS
(only for EMC-D3b-485) ID Increase
Set address of network
from 001 to 247 Decrease
BDR
Set baud rate 19200 baud 19.2
serial interface 9600 baud 9.60
(only for EMC-D3b-485) 4800 baud 4.80
2400 baud 2.40
PAR
Set parameters of bit: 8data 1stop-no parity 8.1 NO
Communication bit: 8data 2stop-no parity 8.2 NO
serial interface bit: 8data 1stop-even parity 8.1 EVE
(only for EMC-D3b-485) bit: 8data 1stop-odd parity 8.1 ODD
PAS Increase
Set Password
OFF - 0002 ÷ 9999 Decrease
Confirm and end of general settings
SET
SET
SET
SET
SET
SET
SET
SET
SET
SET
SET
SET
SET
SET
SET
SET

EMC-D3b EMC-D3b-485 instructon manual IM450-U v3.1 page 8
Programming of the transformation ratio of the external current transformers (CT)
The programming of the CT ratio, intended as the ratio between the primary and the secondary circuit (example: with CT
1000/5 it must be set 200), has to be performed by using the front keys.
After the enter in the setup (message SETUP on display) pressing the Ckey, on the display appears the message CT
(Current transformer ratio) with the transformation ratio value (set to 1 by the manufacturer). Press Bor Akeys to
increase or decrease the value respectively (the variation is performed unit by unit). In order to speed up the operation,
keep the Bor Akey pressed, the variation will be performed by tens and hundreds. To increase or decrease the value by
unit, it is necessary to release and to press the button again. To confirm the set value, press the Cbutton; in this way it is
possible to enter the next programming. If none key is pressed for 16 seconds, the instrument will automatically leave the
programming menu and the eventual setting SHALL NOT be stored.
NOTE: in instruments with option ../1A current input, the maximum CT transformer ratio is set to 9999.
Programming of the transformation ratio of the external voltage transformers (VT)
After the precedent programming phase, on display will appear the inscription VT (voltage transformer) and the value of
the transformation rate of the external TV (set to 1 from the constructor), considered as the rate between primary and
secondary (example with TV 15/0.1 kV the value will be 150). In the same way at the programming of the CT rate will be
possible to set this value. If the external TV are not used the value to set will be 1. To confirm the value press the C
button.
Programming of the Energy counter mode (E.NORMAL - E.TOT.PAR - TIME.BAND)
It’ possible to set between the following type of Energy count:
E.NORMAL Only one counter is available for each energy; resetting the energies is available only by the front panel;
E.TOT.PAR Two counters are available for each energy; the total counters are not resettable and is displayed when
the led T1 is ON; reset the partial counter is possibile by the front panel or by the digital input (se digital
input section and Programming of the Digital Input type )
TIME.BAND Two counters are available for each energy; the counted energy is totalized in T1 or T2 counter dependig
the status of digital input; resetting the energies make a reset of ALL the counters.
Pressing the Akey, confirm and go away with the next setting.
Programming of the Digital Input type (DI =T.SYNC - DI= RESET - DI =DISAB)
It’ possible to set between the following type of digital Input:
DI =T.SYNC
DI= RESET
DI =DiSAB
This setup is depending on the choice made in the previous programming of the energy counter mode
See the digital input section to more information.
Programming of the average time (seT AVR)
After the programming phase previously described, pressing another time the Ckey, on the display will appear the
message AVR and the average time settable from 1 to 30 minutes.
To increase the value press the Bkey. To decrease it, press the Akey. To confirm it press the Ckey.
The average time is the time used to calculate the average parameters (avg) and the maximum demand (maxD).
The average measures and max demand measures are readible only in the model with the serial port RS485 and only
using the RTU Modbus protocol. For list of Modbus register please refer to the manual IM154.
Programming insertion mode
The possible insertion modes are:
3PH.UNB setting or three phase unbalanced system insertion
3PH.BALAN setting for three phase balanced system (only one CT and only one VT)
1PH L1-N. Setting for a single phase networks
Programming wiring connection mode
This setting allows to definite the wiring type connection. It’s possible to chose 3 wires or 4 wires. With the 4 wires
connection the neutral parameter are displayed and enabled to use for the digital and analog outputs settings.

EMC-D3b EMC-D3b-485 instructon manual IM450-U v3.1 page 9
Programming of the synchronism type
The possible choices are
SYNC.L1
SYNC.50
SYNC.60
Choose SYNC.L1 to use the external frequency (taken from VL1 phase) as time reference for calculate frequency and
other acquisition parameters;
choose SYNC.50 or SYNC.60 Hz to use the internal clock as time reference; this is useful when presence of heavy
harmonics on the network cause defective frequency calculation.
Programmingoftheweightoftheactiveandreactiveenergypulse(PUL)
After the above mentioned programming, by pressing the Ckey again, the message PUl will appear on the display and
the value of the weight of one pulse settable on three phase values: 0,01 - 0,1 - 1- 10 kWh or kVArh (for each emitted
pulse the instrument will have counted 0,01 - 0,1 - 1 - 10 kWh o kVArh).
Press the Bkey to increase the value or Akey to decrease the value and Cto confirm.
Programming of the duration pulse (TPL)
The message TPLwill appear together the value of the duration pulse expressed in mS. It’s possible to select the value
from 100 mS to 500 mS, with 100 ms steps by using Bkey (to increase the value) and A(to decrease the value). Confirm
the value pressing the Ckey.
This setting is used by all digital outputs.
If the instrument has not options the programming continues with the set password PASS, then it come back at the first
page SETUP. The presence or the absence of the options, digital input and serial output, will allow the visualization or
not of the other settings.
Programming of the address for the communication network (ID)(only for EMC-D3b-485)
After the confirm with the Ckey of the previous value, the message ID will appear on display; to set the value that will
identify the instrument when it will be connected in a EIA485 communication network, proceed with the modality, already
described. The settable values are from 1 to 247. To confirm, press the Ckey.
Programming of the baud rate (BDR) (only for EMC-D3b-485)
The following setting is the baud rate. The message BDR with the value on the display to indicate the programming of the
baud rate. To modify the value set, it’s necessary to use the Akey to decrease and Bto increase the rate. The values
settable are:
- 19.2 => 19200 baud
- 9.60 => 9600 baud
- 4.80 => 4800 baud
- 2.40 => 2400 baud
Press Cto confirm the value displayed.
Programming of the serial parameters (only for EMC-D3b-485
On display will appear the message SET. The following message will appear on display using the Aand Bkeys. To
confirm press the Ckey.
8 1 8 data bit / 1 stop bit
NO No parity 8 2 8 data bit / 2 stop bit NO No parity 8 1 8 data bit / 1 stop bit EVE Even parity 8 1 8 data bit / 1 stop bit ODD Odd parity
Programming of the Password (PAS)
The instrument is supplied without password. When a password (from 0002 to 9999) is set, using the B(to increase), A
(to decrease) and C(to confirm) keys, only who know this value can to enter in the setup. The password, in fact, is
required all the time that someone try to enter in the setup (pressing the Ckey). If the password is wrong, the message
PASS ERR will appear on display and the instrument go back to the measures visualization. To input the password,
when required by the instrument, at the enter of the setup, use the A, Band Ckeys as the same way done previously.
The menu is cyclic. After the last setting, the instrument go back to the first page of Setup (SETUP).
I/O INFO PAGE
The status of the serial port appear on the display when the instrument has this option. If the instrument receives data, it
displays the letter Rand the number of the instrument that is in communication while if the instrument transmits data, it
displays the letter T.

EMC-D3b EMC-D3b-485 instructon manual IM450-U v3.1 page 10
MEASURES VISUALISATION
There are 2 mode of measure visualization: counter mode and meter mode:
Counter mode
In the counter mode (automatically selected at the power on and exiting from SETUP), the energies are visualised by a 7
+ 1 digit display (kWhr/kVArhr/kVAhr)
According with the switching status of the LED's kWh, kVArh, T1 and T2, the various visualization mode are explained
by the following tables:
Energy operating mode = E.NORMAL
Parameter LED's STATUS
LED kWh LED kVARh LED T1 LED T2
Visualisation active energy SWITCHED ON SWITCHED OFF ALWAYS OFF ALWAYS OFF
Visualisation reactive energy SWITCHED ON SWITCHED ON ALWAYS OFF ALWAYS OFF
Visualisation apparent energy SWITCHED OFF SWITCHED OFF ALWAYS OFF ALWAYS OFF
Energy operating mode = E.TOT.PAR
Parameter LED's STATUS
LED kWh LED kVARh LED T1 LED T2
Visualisation: ACTIVE ENERGY
TOTAL counter SWITCHED ON SWITCHED OFF SWITCHED ON SWITCHED OFF
Visualisation: ACTIVE ENERGY
PARTIAL counter SWITCHED ON SWITCHED OFF SWITCHED OFF SWITCHED ON
Visualisation: REACTIVE ENERGY
TOTAL counter SWITCHED OFF SWITCHED ON SWITCHED ON SWITCHED OFF
Visualisation: REACTIVE ENERGY
PARTIAL counter SWITCHED OFF SWITCHED ON SWITCHED OFF SWITCHED ON
Visualisation: APPARENT ENERGY
TOTAL counter SWITCHED OFF SWITCHED OFF SWITCHED ON SWITCHED OFF
Visualisation: APPARENT ENERGY
PARTIAL counter SWITCHED OFF SWITCHED OFF SWITCHED OFF SWITCHED ON
Energy operating mode = TIME.BAND
Parameter LED's STATUS
LED kWh LED kVARh LED T1 LED T2
Visualisation active energy T1time band
Energy counting on T1 time band SWITCHED ON SWITCHED OFF BLINKING SWITCHED OFF
Visualisation active energy T2time band
Energy counting on T1 time band SWITCHED ON SWITCHED OFF BLINKING SWITCHED ON
Visualisation active energy T1time band
Energy counting on T2 time band SWITCHED ON SWITCHED OFF SWITCHED ON BLINKING
Visualisation active energy T2time band
Energy counting on T2 time band SWITCHED ON SWITCHED OFF SWITCHED OFF BLINKING
Visualisation reactive energy T1time band
Energy counting on T1 time band SWITCHED OFF SWITCHED ON BLINKING SWITCHED OFF
Visualisation reactive energy T2time band
Energy counting on T1 time band SWITCHED OFF SWITCHED ON BLINKING SWITCHED ON
Visualisation reactive energy T1time band Energy
counting on T2 time band SWITCHED OFF SWITCHED ON SWITCHED ON BLINKING
Visualisation reactive energy T2time band
Energy counting on T2 time band SWITCHED OFF SWITCHED ON SWITCHED OFF BLINKING
Visualisation apparent energy T1time band
Energy counting on T1 time band SWITCHED OFF SWITCHED OFF BLINKING SWITCHED OFF
Visualisation apparent energy T2time band
Energy counting on T1 time band SWITCHED OFF SWITCHED OFF BLINKING SWITCHED OFF
Visualisation apparent energy T1time band
Energy counting on T2 time band SWITCHED OFF SWITCHED OFF SWITCHED OFF BLINKING
Visualisation apparent energy T2time band
Energy counting on T2 time band SWITCHED OFF SWITCHED OFF SWITCHED OFF BLINKING

EMC-D3b EMC-D3b-485 instructon manual IM450-U v3.1 page 11
Meter mode
The meter mode can be selected from the counter visualization mode, holding keys ‘A’ and ‘B’ for at least 5 second.
Measure are displayed on the right side of display, in 3-digit format
On the left side are displayed the name of parameter measured.
To change the parameter, press the keys ‘A’ or ‘B’.
Leds status are don’t care; only the pulse led show the status of last selected energy.
To revert to the visualization in counter mode you can hold keys ‘A’ and ‘B’ for at least 5 second or enter in SETUP and
wait the automatically exit to counter visualization measure.
The following table is the list of parameter displayed in meter mode.
Measure visualization in meter mode
Parameter Display
VOLTAGE VL1-NEUTRAL. Vl1 000
VOLTAGE VL2-NEUTRAL. Vl2 000
VOLTAGE VL3-NEUTRAL. Vl3 000
CURRENT PHASE L1 il1 000
CURRENT PHASE L2 Il2 000
CURRENT PHASE L3 Il3 000
POWER FACTOR PHASE L1. PF1 000
POWER FACTOR PHASE L2. PF2 000
POWER FACTOR PHASE L3. PF3 000
ACTIVE POWER PHASE L1. PL1 000
ACTIVE POWER PHASE L2. PL2 000
ACTIVE POWER PHASE L3. PL3 000
REACTIVE POWER PHASE L1. QL1 000
REACTIVE POWER PHASE L2. QL2 000
REACTIVE POWER PHASE L3. QL3 000
APPARENT POWER PHASE L1. SL1 000
APPARENT POWER PHASE L2. SL2 000
APPARENT POWER PHASE L3. SL3 000
VOLTAGE VL1 VL2. V12 000
VOLTAGE VL2 VL3. V23 000
VOLTAGE VL3 VL1. V31 000
FREQUENCY L1 FRE 000
NOTE regarding to the measures.
In some applications, in which the CT's secondary is connected to other instruments, different of the EMC-D3b counters, there might be
some measuring problems, depending on the typology of the current inputs. Optionally, there are alternatives adapted to solve these
possible problems.
Please get in touch with the Technical Assistance Dpt., in case of problems.
NOTE regarding digital inputs.
It is advisable to place a fast fuse 50mA 250V at the digital input.
The maximum absorbed current is 1 mA.
In absence of voltage at the input, the T1 time band will be selected.
With voltage applied to the input, the T2 time band will be selected.
Please refer to the technical characteristics for further information's regarding the digital inputs.

EMC-D3b EMC-D3b-485 instructon manual IM450-U v3.1 page 12
TECHNICAL CHARACTERISTICS
MEASURES, ACCURACY
Energy Active, reactive and apparent energy in the three-phase system, with subdivision in two time bands
Measuring range: 0 – 99999999,9 kWh (kVArh) Class 2 CEI EN62053-21 – CEI EN62052-11
POWER SUPPLY, MEASURING INPUTS
Auxiliary power supply Standard 380-415V ±15%
Frequency 50-60Hz - absorption 3VA
Voltage taken from voltage measuring inputs VL1 VL2
Voltage inputs From 20 – 500 Vrms phase to phase (depending on the voltage power supply) ; permanent overload +20% -
input impedance of 1 M
Wiring in three-phase systems, with 3 or 4 wires; single phase (option).
Current inputs From 0,02 to 5A; permanent overload 30% - with external CT's with secondary 5A,
primary programmable from 5 to 10000A - self-consumption <0,5VA
INPUTS / OUTPUTS
Digital outputs Two outputs with common, optomos 12÷230Vac/dc, max 150mA,
Pulse Function:
Weight programmable 0,01-0,1-1-10 kWh/pulse
Pulse duration 100-200-300 400 500 milliseconds selectable
dO1: active energy pulse output
dO2: reactive energy pulse output
Digital Input Changing time band function
Optoisolated input:
Insulation: 2500 Vrms 60 seconds
Impedance: 440 kohm
OFF voltage range - From 0 to 20 V ca/cc
ON voltage range - From 80 Vac to 250 Vac, 50/60Hz
- From 90 Vdc to 300Vcc, polarised.
Serial output Only for EMC-D3b-485: one RS485 port, 2400 to 19200 baud's, MODBUS-RTU protocol
GENERAL
Display, operation keys 1 display with red LED's of 7,5 mm, made by 8 digits of 7 segments
6 LED's of 3mm, for indicating about the visualisation mode
3 push-button keys for selecting measures and programming
Mechanics Protection degree: IP52 frontal - IP20 casing and terminals - weight: 0,5 kg approx.
Connections made through screw terminals for cross section wires of 2,5 mm2
Self-extinguishing plastic enclosure (Casing) for DIN rail 35mm mounting, with dimensions of 6 modules of
17,5mm.
Environmental Working temperature: -10÷60°C; relative humidity <90%
Stocking temperature: -25÷70°C
Insulation test: 3 kV during 1 minute
Standards of reference
and Marking CEI EN 50081-2; CEI EN 61000-6-2; CEI EN 61010-1; CEI EN62053-21; CEI EN62052-11
DIMENSIONS
For applications that have not been described within the present manual, please refer to the specific documentation or
contact with the Technical Assistance Department.
105
90
67
62
44
45
DIN rail mounting
According with DIN 50022
6 x 17,5 mm modules
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36
CURRENT INPUTS VOLTAGE INPUTS
kWh
,
T2
T1
kVArh
input In k/5A 3x(50 -500V) 50-60Hz
output 2 digital pulses/kWh-kVArh 100÷0,1
1 op tional s eria l port E IA485
energy
EMC-D3b
energy
multifunction
counter