CARLO GAVAZZI EN61036 User manual

EM4-DIN: three-phase energy
meter
Energy meters; Gas and Water
meters; Plug and play technique.
These are only a few among many
other functions performed by your
EM4-DIN. What’s more,
Carlo Gavazzi means ISO9001 cer-
tification, a working experience of
many decades and a widespread
presence all over the world.
All this because we want our
customers to have the top service
and the top products.
Welcome in the Carlo Gavazzi
world and compliments for your
smart choice. Visit our web-site at:
www.carlogavazzi.com
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CARLO GAVAZZI
Automation Components
EN61036
EN61268

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2Index
Front panel description
4
3
EM4-DIN Instruction manual: INDEX
CARLO GAVAZZI
EM4-DIN, three-phase energy meter
FW rev.01
TO BEGIN WITH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .04
■Front panel description . . . . . . . . . . . . . . . . . . . .04
■List and description of displayed measuring pages .04
PROGRAMMING . . . . . . . . . . . . . . . . . . . . . . . . . . . . .07
■Access to the main menu . . . . . . . . . . . . . . . . . . .07
■Change password . . . . . . . . . . . . . . . . . . . . . . . .08
■CT ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .08
■VT ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .09
■Dmd calculation . . . . . . . . . . . . . . . . . . . . . . . . . .09
■Access to the energy meters menu . . . . . . . . . . .11
❑The functions of the energy meters submenu .11
■Digital outputs . . . . . . . . . . . . . . . . . . . . . . . . . . .14
❑Digital output 1 . . . . . . . . . . . . . . . . . . . . . . .14
❑Alarm digital output . . . . . . . . . . . . . . . . . . . .15
❑Digital output 2 . . . . . . . . . . . . . . . . . . . . . . .16
■RS422 / 485 Serial communication port address .16
■Reset of total meters . . . . . . . . . . . . . . . . . . . . . .17
■Reset of partial meters . . . . . . . . . . . . . . . . . . . . .17
■End of programming . . . . . . . . . . . . . . . . . . . . . .17
USEFUL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . .18
■How to prevent key-pad programming . . . . . . . . .18
■Table of open collector digital output pulses . . . . .19
■The “Err” message . . . . . . . . . . . . . . . . . . . . . . . .20
■Displayed variables . . . . . . . . . . . . . . . . . . . . . . .20
■Digital alarm output . . . . . . . . . . . . . . . . . . . . . . .21
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
■How to remove the upper cover . . . . . . . . . . . . . .22
■Module connections . . . . . . . . . . . . . . . . . . . . . . .23
■Module removal . . . . . . . . . . . . . . . . . . . . . . . . . .24

■Dimensions and panel cut-out for panel mounting . . . .25
■Open collector output connections . . . . . . . . . . .26
■Digital input connections . . . . . . . . . . . . . . . . . . .26
■RS422 / 485 serial output connections . . . . . . . . .27
■Electrical diagrams of 90A version . . . . . . . . . . . .28
■Electrical diagrams of 5A version . . . . . . . . . . . . .29
■Two-phase connections . . . . . . . . . . . . . . . . . . . .31
TECHNICAL FEATURES . . . . . . . . . . . . . . . . . . . . . . . .32
We suggest you to keep the original packing in
case it is necessary to return the instrument to our
Technical Service Department. In order to achieve
the best results with your instrument, we recom-
mend you to read this instruction manual carefully.
HOW TO USE THE SYMBOLS
Go to the page where the previous main subject
is described.
Go to the page where the next main subject is
described.
Go to the page where the subject written on the
top of the current page starts.
Go to the page where the subject written on the
bottom of the current page finishes.
This symbol indicates a particularly important sub-
ject or information.
This symbol indicates that more details are given
on the current subject.
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3
Index
Access to the main menu
2
7
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■Front panel description
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4To begin with
Measuring pages
6
6
Display
previous page
Display
next page
Access to
programming or
setting confirma-
tion
Safety Reference
standards to which
the instrument
refers
Back-lighted
LCD Display
■ List and description of displayed measuring pages
When the instrument is switched
on, it displays the first measuring
page relating to the kWh and
kvarh total meters (as shown in the picture on the top of the
page); the next pages are modified according to the setting
of the instrument. To display the other measuring pages, use
the keys. Using the key when the instrument
is without digital input module or set on “tot par”, the
instrument displays:
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5
To begin with
VT ratio
3
Index
4
9
6
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The values of the partial energy
meters.
The instrument displays the
energy values corresponding to
the following tariffs: t1, t2, t3 and
t4 when the digital input mod-
ules are present and the
instrument is set on “tot prd”.
The tariffs are managed by set-
ting the digital inputs as shown
in the table on page 13.
When digital input modules are
present and the instrument is
set on “tot 1.Cn”,it displays the
GAS m3 (daily tariff),
Energy meters display, tariff 3.
Energy meters display, tariff 4.
and the GAS m3(night tariff);
hour periods are managed by
means of the digital inputs (see
table on page 13).

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6To begin with
CT ratio
4
8
It displays the Wdmd system
active power
It displays the W active power
relating to phase 3.
It displays the W active power
relating to phase 2.
It displays the W active power
relating to phase 1.
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When digital input modules are
present and the instrument is
set on “tot 2.Cn”, it displays the
WATER meter m3(H2o)
and the GAS m3meter.
These pages are common to all the settings of the instru-
ment.

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7
Programming
Energy meters
5
Measuring pages
11
17
If the RS422/485 is present, then “r”means that the
instrument is receiving data, while “t”means that the
instrument is transmitting data; this confirms that the seri-
al module is operating correctly and that the wiring is cor-
rect.
Phase sequence: 1.2.3 is cor-
rect and 3.2.1 is wrong.
“Err”stands for a reversed cur-
rent connection and “1.2.3”
shows its phase. See “Useful
information”on page 20.
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The scrolling of the measuring
pages is cyclic, at the end of the
cycle, you go back to the first
page on the left.
■Access to the main menu
From the measuring and display
phase, press the key, to
enter the programming menu,
when the password is request-
ed, enter the correct PASS value
by means of the and
keys, then confirm it using the
key.
If the PASSWORD is correct
(when the instrument is new, it’s
equal to 0), you access the main
menu.
S
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S
S
S
Access to the main
menu
“AL”indicates
that the alarm is
active (for all
measuring pages).

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8Programming
Synchronisation
3
Index
7
10
17
■Change password
This function allows you to
choose the desired password
value (from 0 to 1000). Choose
the function “CnG PASS”by
means of the and keys;
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S
S
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▲
then press to modify PASS,
enter the desired value by means
of the and keys and
confirm the new value with the
key.
S
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S
■CT ratio
This function allows the user to
select the value of the CT ratio.
Example: if the CT primary (cur-
rent transformer) has a current of
300A and the secondary has a
current of 5A, the CT ratio corre-
sponds to 60 (that is 300/5).
Choose the “Ct rAtio”function by
means of the and keys;
to enter the menu press ;
then select the desired value by
means of the and keys
and confirm the new value with
.
S
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S
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S
S
S
S
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1.2..
..2.1
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When the “AL”box (normally used for the alarm indi-
cation) is active during the programming phase, it
means that the displayed value can be modified.
This rule is valid for all the programming menus.

The energy meters are reset by changing the CT
or VT ratio.
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9
Programming
Pulse combination
7
Access to the main menu
7
13
17
S
S
S
S
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1.2..
..2.1
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S
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1.2..
..2.1
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■VT ratio
This function allows you to select
the VT ratio’s value. Example: if
the connected VT primary (volt-
age transformer) is 20kV and the
secondary is 100V, the VT ratio
corresponds to 200 (that is
20000/100). Choose the “Vt
rAtio”function by means of the
and , to enter the menu
press , then select the
desired value by means of the
and keys and confirm it
with .
S
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S
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■Dmd calculation
This function allows the user to
select the integration time of the
W and VA demand value (VA only
by means of RS485). To enter
these functions select “P int t”
from the main menu by means of
the and keys, to enter
the menu press . Set the min-
utes by the and keys and
confirm the value with .
S
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S
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S

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10 Programming
tot c1-tot c2 meters
5
Measuring pages
7
12
17
DMD VALUE CALCULATION
Where: Pc is the contractual power,
t1 is the selected period of demand/integration
If, for example, you select the value 15 minutes, the
instrument calculates the dmd value and updates it
every 15 minutes.
SYNCHRONISATION OF THE POWER DMD CALCULATION
The calculation can be synchronized in two different ways:
•without DIGITAL INPUT module:
the reset and the beginning of the SYNCHRONISATION is car-
ried out when the instrument is switched on;
•with installed DIGITAL INPUT module:
the SYNCHRONISATION starts at the status modification of
the digital inputs (therefore when the tariff changes). A follow-
ing change of status resets and synchronizes again the power
demand calculation.

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11
Programming
Digital alarm output
9
Dmd calculation
7
15
17
S
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S
Scroll the parameters
of the energy meters,
see the functions
described below.
■Access to the energy
meters menu
This function allows the user to
choose the parameters for the
management of the energy meters.
Choose the function “COUntEr”by
means of the and keys: to
confirm the value and enter the
submenu press . By means of
the and keys, it’s possible
to scroll all the functions relating to
the energy meters that will be
described in detail below.
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S
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The submenu of the energy meters with the relevant
functions is only available if the digital input module is
present; if not, the instrument displays only the total
and partial energy meters (kWh and kvarh) and the relevant
menu “COUntEr tot PAr”.
S
S
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❑The functions of the Energy
Meters submenu.
Choose the desired function by
means of the and keys,
press to confirm. It’s possi-
ble to choose the following com-
binations:
tot PAr: it enables the combina-
tion of total and partial meters.
S
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tot Prd: it enables the combination of total and partial
meters: tariff t1, t2, t3 and t4 managed by the digital inputs;

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12 Programming
Digital outputs
7
Access to the main menu
7
14
17
S
S
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1.2..
..2.1
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S
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1.2..
..2.1
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S
S
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1.2..
..2.1
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tot 1.Cn: it enables the combination
of total meters and day-time and
night-time GAS counters (see also
“Display pages”on page 5). Once
“PrESCAL C1”has been selected,
enter by means of the
keys the weight of every pulse of the
IN2 digital input of the GAS coun-
ters and confirm with .
The same input increases alterna-
tively the day-time and night-time
meters.
tot 2.Cn: it enables the combina-
tion of total meters and Water and
Gas counters (see also “Display
pages”on page 6). Once the
“PrESCAL C 1”has been selected,
enter by means of the
keys the weight of every pulse of
the IN1 digital input of the water
counter, confirm with and go
to the “PrESCAL C 2”submenu.
Enter by means of the
keys the weight of every pulse of
the IN2 digital input of the Gas
counters, then confirm with .
S
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S
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S
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The prescaler (PrESCAL) sets the weight of the input
pulses to the digital input module; e.g.: by setting the
prescaler at 10, for each received pulse the meter
increases by 10 (10, 20, 30, etc.). The range of the
prescaler varies from 0.1 to 100.0.

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13
Programming
Meters reset
11
Energy meters menu
7
17
17
The increase of the Water, Gas / night tariff gas
counters or the change of tariff (t1, t2 t3, t4) is car-
ried out thanks to the combination of the input puls-
es to the AO2940 digital input module, according to
the following table:
For the connections of the AO2940 digital input module, see
page 26.
INSTRUMENT
MODE
“tot Prd”mode
Display of total and
partial multitariff
meters.
“tot 1.Cn”mode
Display of total and
day/night time tariff
GAS meters.
“tot 2.Cn”mode
Display of total, GAS
and WATER meters.
RESULT
Tariff 1
Tariff 2
Tariff 3
Tariff 4
GAS
Night tariff
GAS
Day tariff
DIGITAL INPUTS
IN 1
ON
ON
ON
ON
OFF
OFF
OFF
OFF
GAS
counter
increase
WATER
counter
increase
GAS
counter
increase
OFF
ON
IN 2

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14 Programming
Digital Output N. 2
9
VT ratio
7
16
17
■Digital Outputs
❑Digital Output 1
This function enables to set the
parameters of the open collector
digital outputs. Choose the
“diGout”function by means of the
and keys, to enter the
menu press . Then, you may
set the following parameters.
ACt EnE: enable the retransmis-
sion of the active energy by
means of pulses. Confirm with
and then set the number of
pulses (see table on page 19) by
means of the and keys
and confirm the value with .
rEA EnE: enable the retransmis-
sion of the reactive energy by
means of pulses. Confirm it with
and then set the number of
pulses (see table on page 19) by
means of the and keys
and confirm the value with .
AL dmd: access to the alarm
function (see alarm digital output
S
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S
S
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S
S
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S
S
S
S
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Alarm parame-
ters on page 15
To digital output 2
on page 16
S
S
▲
1.2..
..2.1
▼
on page 15). Confirm with to enter the relevant menu.
rEn: enables the activation of the output by means of the
serial communication. Confirm with to enable the func-
tion.
S
S

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15
Programming
Pulse table
13
Pulse combination
7
19
17
❑Alarm Digital Output
This function allows the user to
set the parameters of the alarm
digital output relating to the
Wdmd variable (Power dmd).
Choose the “diGout1- AL dmd”
function by means of the
keys: to enter the menu press .
Then, you may set the following
parameters.
on: on-alarm set-point. It’s the
value of the W dmd variable over
which the alarm is activated.
Select the value of the W dmd
variable by means of the
keys and confirm with .
oFF: off-alarm set-point. It’s the
Wdmd value over which the alarm
is deactivated. Select the Wdmd
value by means of the
keys and confirm it with .
nd: normally de-energized out-
put when there is no alarm.
nE: normally energized output
when there is no alarm.
S
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S
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S
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S
S
S
S
S
To digital output 2
on page 16
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1.2..
..2.1
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1.2..
..2.1
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1.2..
..2.1
▼
Select the output status by means of the and keys and
confirm it with .
SEC: delay time at the activation of the alarm output. Choose
the value of the delay time in seconds by means of the
keys (up to 255 seconds) and confirm with .
S
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S
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16 Programming
Useful information
11
Energy meters menu
7
18
17
S
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1.2..
..2.1
▼
S
S
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1.2..
..2.1
▼
❑Digital output 2
ACt EnE: enables the retransmis-
sion of the active energy by means
of pulses. Confirm with and
afterwards set the number of pulses
(see table on page 19) by means of
the keys and confirm the
value with .
rEA EnE: enables the retransmis-
sion of the reactive energy by
means of pulses. Confirm it with
and then set the number of
pulses (see table on page 19) by
means of the keys and
confirm with .
S
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S
S
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S
From Digital output 1,
rEn, Pul, SEC page15
■RS422/ 485 Serial port
address
Select “AddrESS”from the main
menu by means of the
keys; to enter the menu press ,
then set the desired address value
(from 1 to 255) by means of the
keys and confirm it with
.
S
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S
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17
Programming
Up or down alarm
15
Alarm digital output
7
19
S
S
S
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RESET
■Reset of total meters
Select “rESEt tot”from the main
menu by means of the
keys, then confirm with ; when
the instrument asks for the reset,
you can choose, by means of the
keys:
- “no tot”to avoid the reset or
- “YES tot”to confirm it.
Then, press to carry out the
command.
S
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S
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S
S
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RESET
To measur-
ing mode
■Reset of partial meters
Select “rESEt Prt”from the main
menu by means of the
keys, then confirm with ; when
the instrument asks for the reset, you
can choose, by means of the
keys:
- “Prt no”to avoid the reset or
- “prt YES”to confirm it;
then, press to carry out the
command.
S
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S
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S
■End of programming
Use it to exit from programming and
go back to the measuring mode.
Select “End”from the main menu
by means of the keys, then
confirm it with .
S
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S
Instrument’s
revision

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18 Useful information
The Err message
13
Pulse combination
20
21
■How to prevent the programming by key-pad
It’s possible to prevent access to programming by modify-
ing the dip-switch under slot B. Set dip-switch 1 in ON
position to inhibit programming; set dip-switch 1 in OFF
position to enable programming again.
FREE Access
DENIED Access
ON
Slot B 1 2
ON
1 2
The variables measured by the instrument are
correct if the polarities of the inputs have been
observed (as shown in the figure below); if not,
measuring and retransmission errors may
occur due to the wrong direction of the current flowing
in the primary / secondary of the connected current
transformer.
■CT and VT programming; Open collector digital
output pulse table
The CT is programmable from 1 to 5000, the VT is pro-
grammable from 1.0 to 199.9 and from 200 to 1999 (CT*VT
ratio limited to 5000). The CT must be programmed before

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19
Useful information
Module combination
17
Reset of the meters
18
23
21
A)01(5noisrev4ME
oitarTV*oitarTC (hWk/seslup:egnaRhravk)
morFoTmorFoT
0.10.51001)hravk(hWk/seslup
1.50.051.00.01)hravk(hWk/seslup
1.050.00510.000.1)hravk(hWk/seslup
1.0050.00051001)hravk(hWk/seslup
CAV066noisrevdedulcxeA)09(02noisrev4ME
oitarTV*oitarTC (hWk/seslup:egnaRhravk)
morFoTmorFoT
0.10.51001)hravk(hWk/seslup
CAV066noisrevylnoA)09(02noisrev4ME
oitarTV*oitarTC (hWk/seslup:egnaRhravk)
morFoTmorFoT
1.50.051.00.01)hravk(hWk/seslup
the VT because the programming of VT depends on the CT
value: if the CT is modified, then the VT value automatical-
ly satisfies the expression: CT*VT≤5000. If the CT or VT
values are modified, then the display resolution of the vari-
ables and of the “pul”(pulses) parameter changes auto-
matically according to the table below.
When the CT or VT value is modified, then the energy
meters are reset (after an alert message for confirmation).
the resolution of the energy meters is 0.1k (Wh/varh) with
maximum indication 1999999.9k (display from 0.0k to
1999999.9k and from 2000000k to 99999999k). Once the
limit of 99999999k is reached, the meters are automatical-
ly reset.

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20 Useful information
Removing the cover
15
Alarm digital output
18
22
21
No 1st variable 2nd variable Notes
1 kWh kvarh
2a kWh (t1 or t1- kvar (t1 or t1- Depending on the type
t2-t3-t4) t2-t3-t4) of selection.
2a GAS m3 GAS m3For the energy you can
day-time night-time choose two op. modes:
2c H2O m3GAS m3t1 partial meters or
t1-t2-t3-t4 multi-tariff select.
3W
L1
4W
L2
5W
L3
6Wdmd dmd=demand
7 Display of serial communication status, phase sequence
and wrong connection of current measuring inputs.
■Displayed variables
■The “Err” message
The instrument takes the measure only for quadrants 1 and 4
(consumed energy). The active energy is obtained by integrat-
ing only the sum of the phase active powers on quadrants 1
and 4. Any active powers in quadrants 2 and 3 are forced to
zero and the message “Err”(phase 1, 2 or 3) is displayed on
the current page to indicate a wrong connection (see the rele-
vant page displayed by the instrument on page 7).
W and var are the variables that can be retransmitted by
means of pulses.
Wdmd (power dmd) is the only variable that can be moni-
tored by the alarm output. Both the functions: retransmis-
sion by means of pulses and alarm are carried out by means
of the “AO2900 Open collector output”optional module.