Contrel EMM-R4H User manual

EMM-R4h EMM-μ4h instruction manual IM441-U v0.7 pag. 1
INSTRUCTION MANUAL
IM441-U v0.7
EMM-R4h ELECTRICAL MULTIFUNCTION METER
EMM-µ4h
GENERALITY
These digital multimeters series allow to monitor all the electrical parameters
present on a distribution line. The local display of 30 electrical parameters is
carried out by 4 display with red LED guaranteeing a good and contemporary
reading of more measures. A simple front panel completes the intuitive
selection of several electrical parameters, with a great quantity of information.
These instruments, over of the instantaneous measures, display the
maximum peak of the main parameters (maximum peak and maximum
demand).
The presence of the serial port communication EIA485 (option) allows the
connection in network of more instruments to realize centralized measure
networks.
These multimeters replace in a unique device, all the functions of voltmeters,
ammeters, energy meters, cosphimeters, wattmeters, varmeters, frequency
meters permitting a great economic saving, a reduction of dimension and the
wiring energy and a simplification in the purchase and management of the
instruments because this is a model usable at all of need of local measure in
the electrical panel, machine, etc.
OPTIONS
- internal CT
- digital output (in alternative to the serial port)
- serial port (in alternative to the digital output)
- power supply different from standard version
- current input 1A
MEASURED PARAMETERS
parameters unit of measurement initial identification
phase and three phase voltages [V-kV] V L1-N V
L2-N V L3-N V L-N
phase to phase and three phase system voltages [V-kV] V L1-L2 V
L2-L3 V L3-L1 V L-L
phase and three phase currents [A-kA] A L1 A
L2 A L3 A
phase and three phase power factors PF L1 PF
L2 PF L3 PF
phase and three phase active powers [W-kW-MW] W L1 W
L2 W L3 W
phase and three phase system reactive powers [VAr-kVAr-MVAr] VAr L1 VAr
L2 VAr L3 VAr
phase and three-phase system apparent powers [VA-kVA-MVA] VA L1 VA
L2 VA L3 VA
frequency [Hz] Hz
L3
temperature [°C] T
three phase system active energy [kWh] kWh
three phase system reactive energy [kVArh] kVArh
three phase system apparent energy [kVAh] kVAh
hours counter [hr] h
peak value (maximums):
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

EMM-R4h EMM-μ4h instruction manual IM441-U v0.7 pag. 2
INSTALLATION
WARNING FOR THE USER
Read carefully the instructions/indications contained in this manual before installing and using the instrument.
The instrument described in this manual is intended for use by properly trained staff only.
SAFETY
This instrument has been manufactured and tested in compliance with EN 61010-1standards. In order to maintain these conditions and
to ensure safe operation, the person must comply with the indications and markings contained in the manual. When the instrument is
received, before beginning installation, check that it's O.K. And it has not suffered any damage during transport. When starting
installation make sure that the operating voltage and mains voltage are compatible with the device instructions. The instrument power
supply must not be earthed. Maintenance and/or repair must be carried out only by qualified and authorized personnel. If there is ever
the suspicious that, that there is a lack of safety ,during operation, the instrument must be disconnected and cautions 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
CONNECTION
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 3 different auxiliary supply:
0 - 115V = 100-130V 50-60Hz (N-L3) (on request)
0 - 230V = 220-240V 50-60Hz (N-L3) (on request)
0 - 400V = 380-415V 50-60Hz (L2-L3) (standard model)
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 L2-L3.
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
L2-L3 (phase to phase power supply) 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)
L3-N (phase – neutral power supply) 230V 300÷500V phase to phase (175÷290V phase-neutral)
110V 175÷290V phase to phase (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 L3-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 L2-L3 / 110V.
- measure voltage inputs:
4 terminals are available for the connection to
the 3 phase and neutral of the network of
measure, the maximum voltage phase to
phase shouldn't be over 500 V rms and
dependent to the auxiliary power supply. In
case of a 3 phase system without neutral, or
non distributed neutral to leave terminal N
free. It’s possible to use external voltage
transformer in fact the transformation rate of
the external transducer can be set in the
SETUP of the instrument and the
visualization allows the reading of voltage up
to 40,0 kV.
- measure current inputs:
4 terminals are available for the connection to
3 external amperometric transformers with secondary 5A, it’s possible to use 2 TA on lines with 3 wires (insertion three
phase Aron). The utilization of external TA is obligatory. The transformation rate of the external transducer can be set in
the SETUP of the instrument and the visualization allows the reading of voltage up to 9,99 kA.
REMARKS: It's a must to respect the 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). So as it is not correct to invert S1 and S2 terminals,
since power factors and powers might not be reliable.
For fixing the flush mount version instrument to the panel, use the fixing devices supplied, by inserting them in the side groves of the
enclosure and tighten the screws.
For safety reasons, place an external fuse protection at the input voltages, and use adequate cables for the working voltages and
currents, with a cross sections from 0,5 to 2,5 mm2.
ENERGY COUNTERS
REAR PANNEL
extractible screw terminal
EMM-R4h EMM-µ4h

EMM-R4h EMM-μ4h instruction manual IM441-U v0.7 pag. 3
WIRING DIAGRAMS
LOAD
INSERTION ON THREE PHASE
LINE WITH 4 WIRES AND 3 VT
EMM
P1
S1
P1
P1
P2
S1
S1 S2
INSERTION ON THREE PHASE
LINE WITH 3 OR 4 WIRES
on line with 3 wires (without neutral
or with neutral not supplied) the N
terminal must not be conneccted
LOAD
EMM
P1
S1
P1
P1
P2
S1
S1 S2
N
L1
L2
L3
N
L1
L2
L3

EMM-R4h EMM-μ4h instruction manual IM441-U v0.7 pag. 4
LOAD
EMM
P1
S1
P1 P2
S1 S2
N
L1
L2
L3
A
MPEROMETRIC INSERTION ON
THREE PHASE LINE WITH 2CT
(AARON insertion)
V
OLTAGE INSERTION ON
THREE PHASE LINE WITH
3 WIRES AND 2 VT
This voltage insertion is possible
only with the version with internal
CT (-t suffix).
LOAD
EMM
L1
L2
L3
S2 S2S1 S1
P2P2 P1P1

EMM-R4h EMM-μ4h instruction manual IM441-U v0.7 pag. 5
LOAD
EMM
P1 P2
S1 S2
INSERTION ON BALANCED
THREE PHASE LINE WITH
3 OR 4 WIRES
on line with 3 wires (without neutral
or with neutral not supplied) the N
terminal must not be connected
L1
L2
L3
LOAD
EMM
P1 P2
S1 S2
INSERTION ON SINGLE PHASE
Only for models with power supply
phase-neutral (Vaux L3-N)
N
L

EMM-R4h EMM-μ4h instruction manual IM441-U v0.7 pag. 6
DESCRIPTION FRONT PANEL– OPERATORS
LEGEND:
A: push-button for the visualization of electrical parameters of three-phase system with the corresponding LED
indication. In modality programming (SETUP) it’s used to confirm the parameter set.
B: push-button for the selection of the electrical parameter to be displayed on display F. In modality programming
(SETUP) it’s used to increase the value of the parameters to set.
C: push-button for the selection of the electrical parameter to be displayed on display G. In modality programming
(SETUP) it’s used to reduce the value of the parameters to set.
D: LED bar for the indication of the electrical parameter displayed on display F.
E: LED bar for the indication of the electrical parameter displayed on display G.
F: 3 displays for the visualization of every phase measures. When LLED is ON, only the main display will be active
showing the three-phase system value of the measure selected. LED kand Mshow the eventual multiplying factor:
k=kilo=x1000, M=Mega=x1000000. Using the Ckey the display indicates also the values of the active, reactive and
apparent energy counters. Using the Aand Bkeys the display indicates the maximum and average values.
G: display for the visualization of the measure indicated in LED E(energy counters excluded). The voltage values are
referred to the three-phase system. The kLED displays the reading in kilo (x1000). Using the Ckey the display
indicates the type of the energy displayed. Using the Aand Bkeys, the display indicates the type of average or
maximumvalue.
A+C:when pressing simultaneously the instrument pass to the following menu: instrument programming (SETUP),
energy counters and peak values deleting (RESET), digital outputs programming (SET DO1;SET DO 2) (only
for version with digital output), hour counter programming (HR_), I/O diagnostic page.
A+B:when pressing simultaneously the instrument pass to the visualization of average and maximum values stored.
MENU OF INSTRUMENT PROGRAMMING (SETUP)
Toenter in SETUPit’s necessary to press at the same time AandCkeys,on the Fdisplaywill appear themessage SETUP.
Pressing the Akey on the Gdisplay will appear the message SET that will remain always displayed during the set of each
parametertohighlighttheSeTUp phase in running. The setvalueswillbekeepalsoin absence of auxiliary power supply.
B
C
D
E
F
A
G
kM
kV
L-N
L1
L2
L3
 L
Hz
electrical
multi meter
V
A
P.F.
W
VAr
VA
V
L-N
L-L
°C
V L-L
alarm
kWh
kVArh
...h
max
avg
max
maxD
avg
EMM
DIGITAL OUTPUTS
Digital outputs:
the DO1 output is used as PULSE and it's linked
to the ACTIVE energy counter,
the DO2 output is used as PULSE and it's linked
to the REACTIVE energy counter.
DO1 and DO2 can be used as ALARM and
linked to a measured parameter.
Max 150mA
Max 230Vac/dc

EMM-R4h EMM-μ4h instruction manual IM441-U v0.7 pag. 7
SET GENERAL PARAMETER (SET UP)
Entry to menu:
seT UP seT Up
RESET
SET DO1
SET DO2
SET HR_
DO_ OFF OFF
SET CT Increase
Set CT ratio
from1to 2000 Decrease
SET VT Increase
Set VT ratio
from0.1 to 400.0 Decrease
seT AV9 T Increase
Set average time
from1to 30 minutes Decrease
seT EN TOT PAR
Set Energy visualization NORMAL
type
seT 3pH BALANC
Set connection UN_BAL
Type 1PH L3
seT MDE -3-
Set wiring connection
type -4-
seT SYN MDE L3
Set synchronism 50
type 60
seT PUL SE
Set pulse weight 10.0 kW-kVAr / pulse
(version with digital output) 01.0 kW-kVAr / pulse
0.10 kW-kVAr / pulse
0.01 kW-kVAr / pulse
seT TPL Increase
from 100 to 500 mS
in step by 100 mS Decrease
(version with digital output)
seT ID ADR Increase
Set address of network
from001 to 127 Decrease
(version with serial output)
seT SER BDR
Set baud rate 19200 baud 19.2
serial interface 9600 baud 9.60
(version with serial output) 4800 baud 4.80
2400 baud 2.40
seT PAR
Set parameters of bit: 8data 1stop-no parity 8.1 pAR NO
Comunication bit: 8data 2stop-no parity 8.2 paR NO
serial interface bit: 8data 1stop-even parity 8.1 paR eVe
(version with serial output) bit: 8data 1stop-odd parity 8.1 paR ODD
SET PAS Increase
Set Password
OFF - 0002 ÷ 9999 Decrease
Confirm and end of general settings

EMM-R4h EMM-μ4h instruction manual IM441-U v0.7 pag. 8
Programming of the transformation ratio of the external current transformers (SET 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 Fdisplay) pressing the Ckey, the message seT will appear on the G
display and the message CT (Current transformer ratio) on the first Fdisplay; the transformation ratio value (set to 1 by
the manufacturer) on the second and the third Fdisplay. Press Bor Ckeys to increase or decrease the value
respectively (the variation is performed unit by unit). In order to speed up the operation, keep the Bor Ckey 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 Abutton; in this way it is possible to enter the next
programming. If none key is pressed for 10 seconds, the instrument will automatically leave the programming menu and
the eventual setting SHALL NOT be stored.
- Programming of the transformation ratio of the external voltage transformers (SET VT)
After the precedent programming phase, on Fdisplay 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 A
button.
If the instrument has not options the programming continues with the set of average time AVG T’ and after with the
password PASS, then it come back at the first page SETUP. The presence or the absence of the options, neutral
current, digital output and serial output, will allow the visualization or not of the other settings.
Programming of the average time (seT AVG T’)
After the programming phase previously described, pressing another time the Akey, on the Fdisplay will appear the
message AVG T’ and the average time settable from 1 to 30 minutes.
To increase the value press the Bkey. To decrease it, press the Ckey. To confirm it press the Akey.
The average time is the time used to calculate the average parameters (avg) and the maximum demand (maxD).
Programming of the energy visualization type (seT EN)
This setting allows to define the energy visualization type after the visualization of the temperature.
With TOT PAR will have the visualization of the partial and total energy counters. With NORMAL there will be only the
visualization of total counters (that it’s possible to reset from RESET menu).
Programming insertion mode (3PH)
In a unbalance three phase system it’s necessary to set UN_BAL (unbalance) while in a balance system (only one CT
and only one VT) the correct set is BALANC (balance). For asingle phase insertion it’s necessary to set 1PH L3.
Programming wiring connection mode (MDE)
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.
Programming of the synchronism type (SYN MDE)
In this setting for the synchronization type, it’s possible to choose L3 to use the external frequency (on L3 phase) or 50,
60 Hz to use the internal clock.
Programmingoftheweightoftheactiveandreactiveenergypulse(seTPULSE)(onlyforvers.withdigitaloutput)
After the above mentioned programming, by pressing the Akey again, the message PULSE will appear on the Fdisplay
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 Ckey to decrease the value and Ato confirm.
Programming of the duration pulse (SET TPL) (only for vers. with digital output)
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 C(to decrease the value). Confirm
the value pressing the Akey.
This setting is used by all digital outputs.
Programming of the address for the communication network (SET ID ADR) (only for vers. with serial output)
After the confirm with the Akey of the previous value, the message ID aDR will appear on Fdisplay; 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 Akey.
Programming of the baud rate (SET BDR) (only for vers. with serial output)
The following setting is the baud rate. The message SET appears on Gdisplay, the message SET BDR on the first two
parts of Fdisplay to indicate the programming of the baud rate displayed on the third part (L3) of the Fdisplay. To modify
the value set, it’s necessary to use the Ckey 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 Ato confirm the value displayed.

EMM-R4h EMM-μ4h instruction manual IM441-U v0.7 pag. 9
Programming of the serial parameters (only for vers. with serial output)
On Gdisplay will appear the message SET. The following message will appear on Fdisplay using the Band Ckeys. To
confirm press the Akey.
8 1 8 data bit / 1 stop bit
PAR No parity
NO
8 2 8 data bit / 2 stop bit
PAR No parity
NO
8 1 8 data bit / 1 stop bit
PAR Even parity
EVE
8 1 8 data bit / 1 stop bit
PAR Odd parity
ODD
Programming of the Password (SET PAS)
The instrument is supplied without password. When a password (from 0002 to 9999) is set, using the B(to increase), C
(to decrease) and A(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 Aand Bkey at the same time). If the password
is wrong, the message PASS ERR will appear on Fdisplay 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). It’s always possible
to come back to measures visualization mode pressing at the same time the Aand Ckeys.
PEAK VALUES AND ENERGY COUNTERS RESET (RESET)
From the measures visualization mode, pressing the Aand Ckeys simultaneously the message SETUP will appear on F
display, press the key Cuntil the message RESET appears on the same display. To accede to the menu, press the A
key. Now it’s possible to select the enabling of cancellation type, by pressing the Ckey, according with following types:
RESET PEA: all maximum value will be delete.
RESET AVG: all average and average maximum value (maximum demand) will be delete.
RESET EN: with NORMAL as energy mode (EN) the total energy counters will be delete, with TOT PAR the partial
energy counters will be delete.
RESET ALL: to delete all average and maximum values and all energy hours counters.
Entry to menu:
seT UP seT Up
RESET
SET DO1
SET DO2
SET HR_
--- OFF OFF (the visualization depends on the settings and the I/O status)
RESET PEA NO / YES Confirm Reset
Deleting maximum values (max)
RESET AVG NO / YES Confirm Reset
Deleting average values (avg)
and maximum demand (maxD)
RESET EN NO / YES Confirm Reset
Deleting energy counters
RESET ALL NO / YES Confirm Reset
Deleting maximum and average
values, and energy counters
To enable the chosen type, press the Bkey to change the indication on display Gfrom NO to yes.
Confirm enabling cancellation, by pressing the Akey. The indication on display Gchange from yes to --- .
PROGRAMMING OF THE DIGITAL OUTPUT (SET DO1 SET DO2) (only for vers. with digital output)
The DO1 and DO2 digital outputs have three modality of functioning: PULSE, alarm (ALR) and REMOTE command.
The DO1 modality setting is independent from DO2. For example it’s possible to set DO1 on PULSE (pulse emission)
and DO2 on alarm mode (ALR).
In the menu SET DO1 and SET DO2 it’s possible to program the function of all digital outputs. In these menus are
available the following modality: PULSE, ALR and REMOTE.
In PULSE mode the digital output DO1 will emit pulses proportional to the active energy counted while the digital output
DO2 will emit pulses proportional to the reactive energy counted. The proportionality will depend from the PULSE set in
the SETUP and the duration of the impulse is set in the TPL voice of the SETUP.
The ALR modality is divided in two parts: ALR SYS 3PH and ALR SYS 123. With ALR SYS 3PH the digital
output will function as alarm verifying that the three phase value doesn’t exceed the threshold set (ALR HI and ALR
LO). With ALR SYS 123 the digital output will function as alarm verifying that the maximum value of the single phases
doesn’t exceed the maximum threshold set (ALR HI) and that the minimum value of the single phases doesn’t come
down the minimum threshold set (ALR LO). The activation of the alarm output will come after some seconds of delay
set(ALR DL).
In the REMOTE mode, the output status will be decided from the status of the correspondent MODBUS register (see
protocol modbus manual for EMM).

EMM-R4h EMM-μ4h instruction manual IM441-U v0.7 pag. 10
Enter to menu:
seT UP seT Up
RESET
SET DO1
SET DO2
SET HR_
--- OFF OFF (the visualization depends on the settings and the I/O status)
PUl se To choose the output modality
ALR SYS 3PH (selecting PULSE or
ALR PH_ 123 BY_ REMOTE
BY_ REMOTE the setting finish)
ALR SEl uLN
ALR SEl AMP
ALR SEl P.f To chose the parameter
ALR SEl ACT to control
ALR SEl REA (see variable list)
ALR SEl APP
ALR SEl VLL
ALR SEL FRE (only for ALR SYS 3PH)
AlR sel T°c(only for ALR SYS 3PH)
Set maximum alarm threshold Increase
ALR HI Decrease (after 0there is OFF)
Set minimum alarm threshold Increase
ALR LO Decrease (after 0there is OFF)
Set delay Increase
ALR Dl Decrease
Confirm and end of digital output settings.
ENTER IN THE SETUP
From the measures visualization, press at the same time the Aand Ckeys, the message Set Up will appear on the F
displays.
CHOOSE THE DIGITAL OUTPUT TO PROGRAM
Press repeatedly the Ckey until the message SET DO1 (DO1 output) or SET DO2 (DO2 output) appears on the F
display. Press the Akey to select this setting.
SELECT THE MODALITY OF FUNCTIONING OF THE DIGITAL OUTPUT
To select the functioning mode, using the Band Ckeys, it’s possible to select: PULSE (pulse emission), ALR SYS
3PH, (alarm on three phase value), ALR PH_ 123 (alarm on minimum and maximum single phase value) and BY_
REMOTE (the digital output is managed using serial output). Press Akey to confirm.
CHOOSE THE PARAMETER TO LINK TO THE DIGITAL OUTPUT
With an alarm modality set, it’s necessary to select the parameters associated to the alarm output; by pressing the Band
Ckeys until the parameter choice appears on the third part (L3) of Fdisplay and the glowing the corresponding led on the
Dbar. Press Akey to confirm the set.
SET THE HIGH AND THE LOW THRESHOLDS
On Fdisplay will appear the message ALR Hi with the high threshold value; confirming with the Akey on the same
display will appear the message ALR LO with low threshold value. The B(to increase) and C(to decrease) keys are
used to set the high and the low thresholds values. The range depends by the parameter and it is linked to the CT and VT
ratios. Pressing Akey to confirm.
The threshold set is linked with CT and VT ratios, for this reason it’s necessary to make this operation after the
programming of the CT and VT. The end scale value must be confirmed when CT and VT ratios are modified.
The low threshold will be lower than high threshold. If the high threshold is set as OFF the low threshold will have the
range of the high threshold.
SET THE DELAY TO THE DIGITAL OUTPUT ACTIVATION
Now it’s possible to set the delay that will pass between the alarm condition set and the activation of digital output. On F
display will appear ALR DLY and the value expressed in seconds (range 1÷900). The modification of the value is done
in the same way of the threshold set. With the confirmation (Akey) the set is complete.
The programming will be referred to the digital output indicated on Gdisplay (DO1 o DO2).

EMM-R4h EMM-μ4h instruction manual IM441-U v0.7 pag. 11
t <delay
Digital
output
Threshold HI
delay
HysteresisHI
Alarm
SET THE DELAY TO THE DIGITAL OUTPUT ACTIVATION
Now it’s possible to set the delay that will pass between the alarm condition set and the activation of digital output. On E
display will appear ALR DLY and the value expressed in seconds (range 1÷900). The modification of the value is done
in the same way of the threshold set. With the confirmation (Akey) the set is complete.
The programming will be referred to the digital output indicated on Edisplay (DO1 o DO2).
With only the HI threshold set, the alarm condition is activated when the parameter set in alarm exceed the threshold.
The digital output is enabled only if the alarm condition remain activated for all delay time set. From the activation of the
digital output, the restore is automatic when the parameter decreases below the hysteresis value.
With only the LO threshold set, the alarm condition is activated when the parameter set in alarm drop below the
threshold. The digital output is enabled only if the alarm condition remain activated for all delay time set. From the
activation of the digital output, the restore is automatic when the parameter grow above the hysteresis value.
With both LO and HI threshold set, the alarm condition is activated when the parameter set in alarm is outside from the
values band limited by LO and HI thresholds. The digital output is enabled only if the alarm condition remain activated for
all delay time set. From the activation of the digital output, the restore is automatic when the parameter return inside the
values band limited by LO and HI thresholds.
t < delay
Digital
output
ThresholdLO
delay
HysteresisLO
Threshold HI
Alarm delay
HysteresisHI
t < delay
Digital
output
ThresholdLO
delay
Hysteresis LO
Alarm
Functioning for
exceeding the
maximum threshold
Functioning for
dropping above
minimum threshold
Functioning for
exceeding or dropping
by the band defined by
maximum and
minimum threshold

EMM-R4h EMM-μ4h instruction manual IM441-U v0.7 pag. 12
PROGRAMMING OF THE HOURS COUNTER (SET HR_)
The hour counter will be increased when the measure of the parameter will exceed the set threshold value.
seT UP seT Up
RESET
SET DO1
SET DO2
SET HR_
--- OFF OFF (the visualization depends on the settings and the I/O status)
HR_ SEl VLN
HR_ SEl AMP
HR_ SEl P.f To chose the parameter
HR_ SEl ACT (see the variable list)
HR_ SEl REA
HR_ SEl APP
HR_ SEl VLL
HR_ SEL FRE
HR_ sel T°c
Set the threshold Increase
HR_ HI Decrease
Confirm and end of hour counter settings.
SELECT THE PARAMETER TO LINK TO THE HOURS COUNTER
From the previous setting, pressing the Ckey it’s possible to set the hours counter: the message SET HR_ appears on
the Fdisplay. Press the Akey to define the parameter to link to the hours counter. Press more time the Bkey to select
the parameter and the Akey to confirm it.
SET THE THRESHOLD
Subsequently it’s necessary to set the threshold using the B(to increase) and C(to decrease) keys. Confirm with Akey.
I/O INFO PAGE
After the hour counter set, the I/O info page appears in F displays: on the second part (L2) the status of the first digital
output (DO1), on the third part (L3) the status of the second digital output (DO2).
The visualization of the status of the two digital outputs is ON if the digital output is activated or OFF if deactivated.
The status of the serial port appear on the Gdisplay 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.
VARIABLE LIST
VLN three-phase voltage
AMP three-phase current
P.F three-phase power factor
ACT active power
REA reactive power
APP apparent power
VLL phase to phase voltage
FRE frequency
T°Ctemperature

EMM-R4h EMM-μ4h instruction manual IM441-U v0.7 pag. 13
MEASURES VISUALIZATION
The instrument is divided in two distinct section:
the first is composed by three displays (F), by Aand Bkeys and by LED bar
D; the second (in the low part) is composed by Gdisplay, by Ckey and by
LED bar E.
The two sections are to consider as two different instruments in a only one
box, in fact it’s possible to act in a zone without to modify the visualization in
the other (peak value and energy counters visualization excluded).
Visualization section 1
The three measures of phases (on L1, L2 and L3), of the parameter
indicated from the led Don, appears on Fdisplay. For the measure of the
phase to phase voltages (V L-L), the three measures are VL1-L2, VL2-L3, VL3-L1.
It’s necessary to press the Bbutton to select the parameter that can be displayed and indicated from DLED.
Press Abutton to see on Fdisplay the three phase value (the average of the single phase of voltage, current, power
factor and the sum of single phase for the power) of the parameter selected: the led inside the Akey is on.
To press another time the same key the visualization come back at the phase values.
The unit of measurement can be expressed in kilo or Mega, in the this case the relative LED is on.
A sign – on the first digit indicates the visualization of the capacitive power factor (example the reading -.95 indicates a
power factor of 0.95 capacitive)
Note: If in the Setup the single phase mode (1PH L3) is set, all the measures appear on the L3 display.
Visualization section 2
At the same way of the section 1, press the Cbutton to select the parameter that can be displayed and indicated from E
LED. The voltage values are of the three phase system, the frequency is of the L3 channel.
Visualization energy and hours counters
With the Ckey it’s possible to visualize on Fdisplay the active, reactive and apparent energy counters. One segment of
the right digit of the Gdisplay, in correspondence of the kWh and KVArh on the front panel, turn on, to indicate the
visualization of the active and reactive energy counters. The led VA and the segment of the right digit of the Gdisplay, in
correspondence of …h on the front panel, turn on, to indicate the visualization of the apparent energy counter. To
complete the visualization the led kover the Fdisplay could be on.
This is the visualization if NORMAL is the set in EN voice of the setup. Instead if the setting is TOT PAR on the F
display will be visualized alternatively the partial and the total active, reactive and apparent energy counters; the first digit
of the Gdisplay indicates the type of the counter: Pfor the partial (the user could be reset it) and Tfor the total (it’s no
possible to reset it).
The right digit of Gdisplay, in correspondence of the …h, turn on, when the visualization of hours counters is active.
The reading of the counters use the 9 digits (maximum reading 99999999.9) of the Fdisplay: the measure is displayed in
the way that the L1 display will indicate the first 3 digits, the display L2 the seconds 3 digits and the L3 display the last 3.
For example if: L1=000, L2=028, L3=53.2 the reading is 2853.2 kWh.
section 1
section 2
kM
kV
L-N
L1
L2
L3
 L
Hz
electrical
multi meter
V
A
P.F.
W
VAr
VA
V
L-N
L-L
°C
V L-L
alarm
kWh
kVArh
...h
max
avg
max
maxD
avg

EMM-R4h EMM-μ4h instruction manual IM441-U v0.7 pag. 14
VISUALIZATION PEAK AND AVERAGE VALUES
Pressing at the same time the Aand Bkeys, on Fdisplay will appear the
average and maximum stored value, that are selected using the Bkey while a
luminous segment on the Gdisplay indicates the type of the maximum and/or
average value.
AVG: the average values are calculated on a average time set The calculation
is at fixed window and it’s sinchronized when the instrument turn on.
The stored maximum values are the two types:
MAX: the instantaneous maximum values store the maximum value achieved
by the parameter of measure for at least one second.
MAX AVG: the average maximum values (maximum demand) store the
maximum value achieved in the average time as set in the setup menu.
The integration for the calculating of the average values is synchronized all the
time that the instrument turn on.
Press Aand Bkeys another time to come back to the measures visualization. The instrument will come back to the
measure visualization automatically if for 10 seconds no one button is pressed.
The average value, the maximum value and the maximum average value selectable with Bkey are the following:
parameter Identifications / description G display
phase voltages V L1-N ma
x
V
L2-N ma
x
V
L3-N ma
x
max
maxD
avg
maximum instantaneous phase voltages
phase currents I L1 ma
x
I
L2 ma
x
I
L3 ma
x
max
maxD
avg
maximum instantaneous phase currents
three-phase power W ma
x
VAr ma
x
VA ma
x
max
maxD
avg
maximum three phase powers (
phase currents I L1 max av
g
I
L2 max av
g
I
L3 max av
g
max
maxD
avg
maximum of average phase currents (max. demand)
three-phase power W max av
g
VAr max av
g
VA max av
g
max
maxD
avg
maximum of average three phase powers (maximum demand)
phase currents I L1 av
g
I
L2 av
g
I
L3 av
g
max
maxD
avg
average phase currents
three-phase power W avg Var avg VA avg
max
maxD
avg
average three phase powers
NOTE relative to the measure
The refresh time of the display is lower of a second and it depends by the time of calculating of the measure and concerning the
methodology of measure used in the way to allow a comfortable reading of value also in presence of fast variation of the measure
parameter.
If the multimeters are used on single phase lines, the measures are referred at the phase L3. The other data displayed and relative to
the three-phase system must not considered.
If the measure indicated by the instrument are not reliable or absurd it’s necessary to verify the connection of the measure inputs of
currents and voltages because must be respected the sequence of the phase, the corresponding of the currents and voltages of the
same phase (the L1 voltage phase and the TA located on L1 phase must be connected on the L1 input) and the sense of the current
(the S1 terminals of the TA must be connected at the S1 terminals of the instrument).
In some application where the secondary is connected to other instruments apart from the EMM multimeter, some problems could
happen concerning the typology of the amperometric inputs.
If there are some problem call the assistance service.
kM
kV
L-N
L1
L2
L3
 L
Hz
electrical
multi meter
V
A
P.F.
W
VAr
VA
V
L-N
L-L
°C
V L-L alarm
kWh
kVArh
...h
max
avg
max
maxD
avg
B
C
D
E
F
A
G

EMM-R4h EMM-μ4h instruction manual IM441-U v0.7 pag. 15
COMMUNICATION INTERFACE EIA485 (RS485)
It is possible to exchange information between the instrument and a PC, PLC or other compatible system, through the
asynchronous serial line RS485. The interface EIA485 allows a multi-drop connection, in order to connect various
instruments in the same network. The maximum suggested length for a RS485 connection is 1200m. For longer
distances provide the use of low attenuation cables or signal amplifiers. On the same RS485 it is possible to install up to
32 units, beyond this number of units it is required to place a signal repeater, each one of them will be able to manage up
to 32 instruments. The higher is the number of connected instruments on the same serial line, the lower will be their
response speed.
Not shielded connection
As shown in the diagram, it is necessary to place a serial
RS232/485 converter between the RS232 PC's outlet and
the instrument/s.
it’s necessary to insert a line termination resistance
(Rt=100÷120 ohm) between the twisted pair of cables,
placing it between the converter and the end of the network
(last instrument connected). Use always twisted cables with
minimum section of 0,36mm2(22AWG) and lower capacity
of 60 pF/m (i.e.: BELDEN cable type EIA RS485-
Ref.3105A).
Shielded connection
Should it be the case of long distance networks, ambiences
where there have been placed energy transporting cables or
ambiences subject to be electrically disturbed, it is
suggested to use 100÷120ohm 1/2W resistors, placed
between the common of the RS485 outlet and the shielded
cable.
For other information on the serial line it’s better to see the manual of EMI1 serial converter.
DIMENSIONS
RS485/232 converter
Max 32 EMM; max 300 meters
R=120
A1
B1
A2
B2
serial converter
C1
R1*
R2*
C2
LINE 1
LINE 2
]
]
RS232 RS485 CONNECTION WITH NOT SHIELDED CABLE
PERSONALCOMPUTER
RS485/232 converter
PERSONALCOMPUTER
Max 32 EMM; max 1200 meters
R=120
A1
B1
A2
B2
serial converter
C1
R1*
R2*
C2
LINE 1
LINE 2
]
]
RS232 RS485
CONNECTION WITH SHIELDED CABLE
68
68
R3
72
72
cut panel
72
81 149
65.8
EMM-µ4h
 L
L1
L2
L3
electrical
multi meter
kWh
kVArh
...h
VA
P.F.
W
VAr
VA
V
L-N
L-L
V L-N Hz °CV L-L
alarm
k
max
avg
maxD
max
avg
K
M
92
92
R3
96
96
90
96
56
9
20
cut panel
kM
kV
L-N
L1
L2
L3
 L
Hz
electrical
multimeter
V
A
P.F.
W
VAr
VA
V
L-N
L-L
°C
V L-L alarm
kWh
kVArh
...h
max
avg
max
maxD
avg
EMM-R4h

EMM-R4h EMM-μ4h instruction manual IM441-U v0.7 pag. 16
TECHNICAL FEATURES
MEASURES, PRECISIONS
voltage true RMS of the phase voltages and the phase to phase voltages and values of three phase system
range of total measure: 20÷500V trms phase-phase - 290V rms phase-neutral dependent by the auxiliary
power supply
visualization (0,02÷50,0kV) - measure precision: ±0,5% ±1 digit– management maximum values
current true RMS of the phase currents and of the value of three phase system
range of measure: 0,02÷5A trms - measure precision: ±0,5% ±1 digit
visualization 0,02÷9990A – management average and maximum values
frequency frequency of the L3 phase –range of measure: 45÷65Hz
precision: ±0,5% ±1 digit
powers phase and three phase system reactive and active power
range of measure: 0,001÷9990kW - 0,001÷9990kVAr - 0,001÷9990kVA
precision: ±1% ±1 digit - management average and maximum value
power factor phase and three phase power factor
range of measure: -0,1÷0,1 / precision: ±1% ±1 digit - management average and maximum value
energy measure three phase system active, reactive and apparent energy
range of measure: 0÷99999999,9 kWh / kVArh class 2 ( IEC 1036)
precision: ±1%
hours counter precision: ±1%; resolution 1/10 of hour
AUXILIARY POWER SUPPLY, INPUTS
auxiliary power
supply standard 380-415V ±15% - optional 100-125 / 220-240V ±15% frequency 45-65Hz - consumption 3VA
voltage from the voltage measure input
voltage inputs from 20 to 500V phase-phase (dependent from auxiliary power supply); permanent overload +20% - input
impedance: 1 M
insertion on three phase line with 3 wires, 4 wires and single phase
insertion in MT with external TV and transforming rate programmable from 0.1 to 400.0
current inputs from 0,02 to 5A; permanent overload 30% - from external TA with secondary 5A,
primary programmable from 5 to 10000A - auto-consumption <0,5VA
INPUTS / OUTPUTS
digital outputs Two outputs with common, optomos 12÷230Vac/dc, max 150mA,
Insulation: 3kV for 60 second
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
serial output One optional output RS485, baud rate selectable, MODBUS-RTU protocol
Insulation: 3kV for 60 second
GENERALS
display, operators 4 displays with red LED 10mm everyone of 3 digit by 7 segments
3 push-button for selecting measure and programming
mechanic protection degree: IP52 frontal - IP20 enclosure and terminals - weight: about 0,5 kg
connections with screw terminals for cable 2,5 mm2
enclosure thermoplastic self-extinguishing
EMM-R4h: flush mounting DIN 96x96mm, depth 56mm
EMM-µ4h: flush mounting DIN 72x72mm, depth 95mm
environmental working temperature: -10÷60°C; humidity <90%
storing temperature: -25÷70°C
insulation test: 3 kV for 1 minute
standards CEI EN 50081-2; CEI EN 50082-1;
CEI EN 61010-1
NOTE
At reason of the evolution of standards and products, the company reserves to modify in every time the features of the product described in this
document, that it’s necessary to verify preventively.
The liability of the producer for damage caused by defect of the product ”can be reduced or deleted (…) when the damage is caused joint by a defect of
product or for blame of the damaged or a person of which the damaged is responsible” (Article 8, 85/374/CEE).