Datasheet EM4-DIN Datasheet (YZ)

1

Product description

Three-phase energy meter
with built-in configuration
key-pad; particularly indicat­ed for the metering and the
management of the energy
in addition to the metering
and the management of the
signals coming from the
water and gas meters.
Housing for DIN-rail or wall­mounting, IP40 (front) pro­tection degree.
Completely sealable housing.
In case of direct connection
up to 90A, the measuring

input terminals are suitable
for cables with a cross-sec­tion area from 6 to 35 mm

2

.
The special design of the
instrument’s housing allows
to add at any time the inter­face modules, even when
the instrument is already
installed. The following mod­ules are available:

- for all versions: pulse output;

- only for the versions with

auxiliary power supply:
digital inputs, RS485 serial
port.

Energy Management
Three-phase energy meter with output modules
Type EM4-DIN

Type selection

Power supply

For all versions
A: 24VAC

-15+10%, 50-60Hz

B: 48VAC

-15+10%, 50-60Hz

C: 115VAC

-15+10%, 50-60Hz

D: 230VAC

-15+10%, 50-60Hz

4: 18 to 60VDC
5: 77 to 143VDC
AV2, AV8 and AV9

only

X: Self Power Supply

400V

L-L

(-20+15%, 50-60Hz)
208V

L-L

(-20+15%, 50-60Hz)
220V

L-L

(-10+15%, 50-60Hz)

Range Code

Auxiliary Power Supply:
AV0: 208V

L-L

/20(90)AAC [3]

AV1: 400V

L-L

/20(90)AAC [1]

AV3: 660V

L-L

/20(90)AAC [2]

AV4: 208V

L-L

/5(10)AAC [3]

AV5: 400V

L-L

/5(10)AAC [1]

AV6: 100V

L-L

/5(10)AAC [3]

AV7: 660V

L-L

/5(10)AAC [2]

Self Power Supply:
AV2: 220V

L-L

/20(90)AAC [4]

AV8: 208V

L-L

/20(90)AAC [1]

AV9: 400V

L-L

/20(90)AAC [1]

Slot A (retransmission)

X:

None

O:

AO2900 module
Dual open collector out­put. Three operating
modes:

• two pulse outputs

(kWh and kvarh);

• one alarm output

(kW dmd)

and one
pulse output
(kWh or kvarh)

•one output

remotely controlled
by a serial port
and one pulse
output

(kWh or kvarh)

D: AQ2940 module

Two digital inputs for
the management of
water and gas meters

Slot A (retransmission) cont.

R:

AO2910 module.
One relay output + one
open collector output.
Operation modes like
module AO2900

Slot B (retransmission)

Only with A-B-C-D-4
power supply

XX:

None

S0: AR2950 module

RS422/485
serial port

Model
Range code
System
Power supply
Slot A
Slot B

How to order

EM4-DIN AV5 3 X X XX

System

3 : Three-phase,

unbalanced load with
or without neutral

[1] Un: -20+15% [2] Un: -30+15% [3] Un: -20+20% [4] Un: -10 +15%

• Class 1 (active energy)

• Class 2 (reactive energy)

• Three-phase multi-function energy meter

• Back-lighted LCD display

• 3

1

/2DGT instantaneous variables read-out

• 8 DGT + 7

1

/2DGT energy read-out

• Measurements of system and phase variables:

W, Wdmd

• Measurements of total energies: kWh, kvarh

• Measurements of partial energies: kWh, kvarh

• Energy measurements according to EN61036 and EN61268

• Energy measurements by time periods (t1-t2-t3-t4)

selectable by input contacts

• Measurements of m3H2O and m3GAS by means of input contacts

• TRMS measurements of distorted wave forms

(voltages/currents)

• Two basic models: direct connection 20(90)AAC,

CT 5(10)AAC and VT connection

• Self power supply (available for some models only) or

auxiliary power supply: 24V, 48V, 115V, 230V, 50-60Hz;
18 to 60VDC, 77 to 143VDC

• Degree of protection (front): IP 40

• Front dimensions: 9 DIN modules

• RS 422/485 Serial port by means of optional module

• Dual pulse output by means of optional module

• Alarm output (kW dmd) by means of optional module

• Digital inputs for the management of the time periods

and of the

H2O and GAS meters

Important note:

• The models from AV0 to AV7 can be equipped with any

type of available modules (slot A and B).

• The models AV8 and AV9 can be equipped only with the

“O” and “R” type modules.

• The AV8 and AV9 models can measure all the parameters

even if the three phase system being connected is missing
one phase.

• The AV2 model is suitable only for three-phase unbalanced

system without neutral.

2

EM4-DIN

2000 V

RMS

output to

supply input

Digital outputs (on request)

AO2900 module To be used as energy

retransmission, water and
gas, remote static outputs
and alarm. Three working
modes are selectable:

• two pulse outputs

(kWh and kvarh);

• one alarm output (kW

dmd) and one pulse
output

(kWh or kvarh);

• one output remotely con-

trolled by means of the
serial port and one pulse
output

(kWh or kvarh)
Pulse outputs
Number of outputs 2
Number of pulses

From 0.01 to 100 pulses
programmable according to
the selected CT and VT ratios

Output type

Open collector (NPN transistor )
VON1.2 VDC / max. 100 mA

RS422/RS485 (on request) AR2950 module

Type Multidrop

bidirectional (static
and dynamic variables)

Connections 2 or 4 wires, max. distance

1200m, termination directly

on the module
Addresses 255, selectable by key-pad
Protocol MODBUS/JBUS
Data (bidirectional)

Dynamic (reading only)

Phase and system variables:

see table “Display pages”

Static (writing only ) All the programming data,

reset of energy, activation of

static output.

Stored energy (EEPROM)

max. 99.999.999 kWh/kvarh
Data format 1 start bit, 8 data bit,

no parity, 1 stop bit
Baud-rate 9600 bit/s
Insulation By means of optocouplers,

2000 V

RMS

output

to measuring inputs

Number of inputs

Current 3
Voltage 4

Accuracy

(display, RS485)

Ib: 5A, Imax: 10A
Ib: 20A, Imax:90A
Un: see “Range code” on
previous page

Current from 0.003Ib to 0.2Ib:

±(0.5%RDG +3DGT)
from 0.2Ib to Imax:
±(0.5%RDG +1DGT)

Voltage in the range Un:

±(0,5% RDG + 1DGT)

Frequency ±0.1% RDG (50 to 60 Hz)
Active power

(@ 25°C ± 5°C, R.H. ≤ 90%) ±(1% RDG +1DGT). PF 1,

0.1Ib to Imax, in the Un range;
PF 0.5L, PF 0.8C, 0.2Ib to
Imax, in the Un range

Energies

(@ 25°C ± 5°C, R.H. ≤ 90%) Class 1 acc. to

EN61036
Class 2 acc. to EN61268
Ib: 5A, Imax: 10A

0.1Ib: 500mA,
Start up current: 20mA
Un: see table “range code”
Ib: 20A, Imax: 90A

0.1Ib: 2A,
Start up current: 80mA
Un: see table “range code”

Additional errors

Acc. to EN61036, EN61268

Wave form <1% (3rdharmonic: 10%)
Voltage asymmetry < 0.5% (referred to Un)
Magnetic induction 0 (up to 0.5 mT)
HF Electromagnetic fields < 1%
Operation of accessories 0

Temperature drift ≤ 200ppm/°C
Sampling rate 1000 samplings/s @ 50Hz
Display

Type Back-lighted LCD
Instantan. variables read-out 3

1

/2DGT

Energies Total: 8 DGT + 7

1

/2DGT;

Partial: 8 DGT + 71/2DGT;

Max. and Min. indication

Max. 1999 (99999999), Min. 0

Measurements Power, energy.

TRMS measurements of
distorted wave forms.

Coupling type Direct

Crest factor

Ib 5A ≤3 (15A max. peak)
Ib 20A ≤6 (127A max. peak)

Current overload

5(10) A, for 10ms 300A max, @ 50Hz
5(10) A, for 500ms 200A max, @ 50Hz
5(10) A, permanent 10A, @ 50Hz
20(90) A, for 10ms 2700A max, @ 50Hz
20(90) A, permanent 90A, @ 50Hz

Voltage overload

Permanent 1.2 Un
For 1s 2 Un

Input impedance

400V

L-L

(AV1-AV5-AV9) > 720KΩ

208V

L-L

(AV0-AV4-AV8-AV2) > 720KΩ

660V

L-L

(AV3-AV7) > 1.97MΩ

100V

L-L

(AV6) > 400KΩ

5(10) A (AV4-AV5-AV6-AV7) < 0.3VA
20(90) A (AV0-AV1-AV3-AV8-AV9) < 4VA
20(90) A (AV2) < 4VA

Frequency 50 to 60 Hz

Interface module specifications

Input specifications

3

EM4-DIN

V

OFF

30 VDC max.

Pulse duration

220 ms (ON), ≥ 220 ms (OFF)
According to DIN43864

Alarm output

Number of outputs 1
Alarm type Up alarm, down alarm.

Setpoint adjustment 0 to 100% of the electrical

scale

Hysteresis 0 to 100% of the electrical

scale
On-time delay 0 to 255 seconds
Response time 700 ms
Output type

Open collector (transistor NPN)

VON1.2 VDC / max. 100 mA

V

OFF

30 VDC max.

Insulation By means of optocouplers,

2000 V

RMS

outputs to
measuring inputs,
2000 V

RMS

output to
supply input.
Insulation between the two
outputs: functional

AO2910 module Relay + open collector

output. Working mode like
AO2900.

Pulse output One static output+one relay

output, other characteristics
like AO2900.

Alarm output Only relay output, other

characteristics like AO2900.

Output type Static type like module

AO2900;
Relay type: SPDT,
AC1, AC15: 1AAC @250VAC

Insulation 2000 V

RMS

outputs to
measuring inputs,
2000 V

RMS

output to

supply input.
Insulation between the two
outputs: 2000 V

RMS

Digital inputs (on request) AQ2940 module

Four working modes are
selectable:

• total and partial energy

meters (kWh and kvarh)
without the use of digital
inputs

• total and partial energy

meters (kWh and kvarh)
managed by time periods
(t

1-t2-t3-t4

);

• total energy meters

(kWh, kvarh) and total
“day-time/night” GAS
meter;

• total energy meters

(kWh, kvarh), GAS
and WATER meters;

Number of inputs 2

Input frequency 20Hz max.
Duty cycle 50%
Prescaler adjustment from 0,1 to 100,0 m

3

/ pulse

Contact measur. voltage 12V < +Aux < 24VDC

Logic status:
OFF < 2V, ON > 10V

Contact measur. current 15mA max
Input impedance 1kΩ
Contact resistance ≤ 1kΩ, close contact

≥ 100kΩ, open contact

Insulation By means of optocouplers,

2000 V

RMS

digital inputs to
measuring inputs,
2000 V

RMS

digital inputs to
supply input.

Interface module specifications (cont.)

to 5A)

Display

Variables Up to 4 variables per page

Page 1: k

Wh-kvarh

Page 2a:

k Wh

(t1-t2-t3-t4)

k varh

(t1-t2-t3-t4)

Page 2b:

GAS m3day-time tariff,

GAS m3night tariff

Page 2c:

H2O m3, GAS m

3

Page 3: W

L1

Page 4: W

L2

Page 5: W

L3

Page 6: W

dmd

Errors

Phase sequence, serial
communication status, wrong
connection of current
measuring inputs.

Password Numeric code of max.

3 digits
2 protection levels of the
programming data

1

st

level Password “0”, no protection

2

nd

level Password from 1 to 1000,

all data are protected

Transformer ratio

CT 1 to 5000
VT 1.0 to 199.9 and 200 to 1999

Note:

The CT ratio * VT ratio

must

never exceed the
value 5000. The current
measuring inputs can
manage CT’s with a
secondary of 1A and 5A
(accuracy always refers

Software functions

Self supplied version 400V

L-L

(-20% +15%, 50-60Hz)
208V

L-L

(-20% +15% , 50-60Hz)
220V

L-L

(-10+15%, 50-60Hz)

Auxiliary power supply 230VAC -15 +10%, 50-60Hz

115VAC -15 +10%, 50-60Hz
48VAC; -15 +10%, 50-60Hz
24VAC; -15 +10%, 50-60Hz
18 to 60VDC; 77 to 143VDC

Energy consumption ≤ 7VA

Supply specifications

4

EM4-DIN

Variables that can be displayed
No 1stvariable 2ndvariable Notes

1 kWh kvarh
2a kWh (t1or t1-t2-t3-t4) kvarh (t1or t1-t2-t3-t4) Depending on the type of selection you have chosen.
2b Day-time GAS m

3

Night GAS m

3

For the energy it is possible to choose the following operating mode:

2c H2O m

3

GAS m

3

t1 partial meters or t1-t2-t3-t4multitariff selection

3W

L1

4W

L2

5W

L3

6W

dmd

dmd = demand (integration time selectable from 1 to 30 min.)

7 Display of the serial communication status, phase sequence, wrong connection of current measuring inputs

Display pages

Pulse voltage (1.2/50µs)

8kV (EN61000-4-5)

Standards

Safety IEC60664-1
Metrology Energy measurements:

EN61036, EN61268.

Pulse output DIN43864

Approvals CE
Connections 5(10) A Screw-type,

Cable cross-section area 4 mm

2

Connections 20(90) A Screw-type,

Min./

Max. cable cross-section area

6 mm2 / 35 mm

2

Min./Max. screws tightening torque 2 Nm / 6 Nm (90A inputs)

Housing

Dimensions 162.5 x 90 x 63 mm
Material ABS, NORYL, PC

self-extinguishing: UL 94 V-0

Mounting DIN-rail and wall
Degree of protection Front: IP40

Connections: IP20

Weight

800 g approx. (packing included)

Operating 0 to +55°C
temperature

(R.H. < 90% non-condensing
40°C)

Storage -20 to +60°C
temperature

(R.H. < 90% non-condensing
40°C)

Installation category Cat. III (IEC60664)
Insulation

2000 V

RMS

between all inputs

/

outputs to earth

Dielectric strength 4000 VRMS for 1 minute
Noise rejection

CMRR 100 dB, 48 to 62 Hz

EMC

Burst 4kV/level 4 (EN61000-4-4)
Immunity to irradiated

electromagnetic fields 10V/m 26-1000MHz

(EN61000-4-3)
Electrostatic discharges 15kV (EN61000-4-2)
Radio frequency emissions according to CISPR 14

and CISPR 22

General Specifications

System variables

Equivalent system voltage

System reactive power

System active power

System apparent power

System power factor

(TPF)

Used calculation formulas

Phase variables

Instantaneous effective voltage

Instantaneous active power

Instantaneous power factor

(TPF)

Instantaneous effective current

Instantaneous apparent power

Instantaneous reactive power

Consumption recording

Note:
i = phase (L1, L2 or L3)
P = active power
Q = reactive power
t

1

, t2= starting and ending time

points of consumption recording
n = time unit
∆t= time interval of consumption

recording
n

1

, n2= starting and ending discrete

time points of consumption recording

Note: RS422/RS485 “dynamic data”. The variables transmitted are the ones listed in
the table above and those mentioned in the “Display pages” of WM22-DIN data
sheet except for: THDA, THDV, A max, W

dmd

max, and VA

dmd

max.

5

EM4-DIN

Type Inputs Power supply Ordering code

EM4-DIN AV9.3.X. 400V

L-L

, 20(90)A Self power supply AG2200

EM4-DIN AV8.3.X. 208V

L-L

, 20(90)A Self power supply AG2201

EM4-DIN AV2.3.x 220V

L-L

, 20(90)A Self power supply AG2244

EM4-DIN AV1.3.D. 400V

L-L

, 20(90)A 230VAC, 50-60Hz AG2202

EM4-DIN AV0.3.D. 208V

L-L

, 20(90)A 230VAC, 50-60Hz AG2203

EM4-DIN AV3.3.D. 660V

L-L

, 20(90)A 230VAC, 50-60Hz AG2204

EM4-DIN AV1.3.C. 400V

L-L

, 20(90)A 115VAC, 50-60Hz AG2205

EM4-DIN AV0.3.C. 208V

L-L

, 20(90)A 115VAC, 50-60Hz AG2206

EM4-DIN AV3.3.C. 660V

L-L

, 20(90)A 115VAC, 50-60Hz AG2207

EM4-DIN AV1.3.B. 400V

L-L

, 20(90)A 48VAC, 50-60Hz AG2208

EM4-DIN AV0.3.B. 208V

L-L

, 20(90)A 48VAC, 50-60Hz AG2209

EM4-DIN AV3.3.B. 660V

L-L

, 20(90)A 48VAC, 50-60Hz AG2210

EM4-DIN AV1.3.A. 400V

L-L

, 20(90)A 24VAC, 50-60Hz AG2211

EM4-DIN AV0.3.A. 208V

L-L

, 20(90)A 24VAC, 50-60Hz AG2212

EM4-DIN AV3.3.A. 660V

L-L

, 20(90)A 24VAC, 50-60Hz AG2213

EM4-DIN AV5.3.D. 400V

L-L

, 5(10)A 230VAC, 50-60Hz AG2214

EM4-DIN AV4.3.D. 208V

L-L

, 5(10)A 230VAC, 50-60Hz AG2215

EM4-DIN AV7.3.D. 660V

L-L

, 5(10)A 230VAC, 50-60Hz AG2216

EM4-DIN AV5.3.C. 400V

L-L

, 5(10)A 115VAC, 50-60Hz AG2217

EM4-DIN AV4.3.C. 208V

L-L

, 5(10)A 115VAC, 50-60Hz AG2218

EM4-DIN AV7.3.C. 660V

L-L

, 5(10)A 115VAC, 50-60Hz AG2219

EM4-DIN AV5.3.B. 400V

L-L

, 5(10)A 48VAC, 50-60Hz AG2220

EM4-DIN AV4.3.B. 208V

L-L

, 5(10)A 48VAC, 50-60Hz AG2221

EM4-DIN AV7.3.B. 660V

L-L

, 5(10)A 48VAC, 50-60Hz AG2222

EM4-DIN AV5.3.A. 400V

L-L

, 5(10)A 24VAC, 50-60Hz AG2223

EM4-DIN AV4.3.A. 208V

L-L

, 5(10)A 24VAC, 50-60Hz AG2224

EM4-DIN AV7.3.A. 660V

L-L

, 5(10)A 24VAC, 50-60Hz AG2225

EM4-DIN AV6.3.D. 100V

L-L

, 5(10)A 230VAC, 50-60Hz AG2226

EM4-DIN AV6.3.C. 100V

L-L

, 5(10)A 115VAC, 50-60Hz AG2227

EM4-DIN AV6.3.B. 100V

L-L

, 5(10)A 48VAC, 50-60Hz AG2228

EM4-DIN AV6.3.A. 100V

L-L

, 5(10)A 24VAC, 50-60Hz AG2229

EM4-DIN AV1.3.4 / [5] 400V

L-L

, 20(90)A 18-60VDC [77-143VDC] AG2230 [AG2237]

EM4-DIN AV0.3.4 / [5] 208V

L-L

, 20(90)A 18-60VDC [77-143VDC] AG2231 [AG2238]

EM4-DIN AV3.3.4 / [5] 660V

L-L

, 20(90)A 18-60VDC [77-143VDC] AG2232 [AG2239]

EM4-DIN AV5.3.4 / [5] 400V

L-L

, 5(10)A 18-60VDC [77-143VDC] AG2233 [AG2240]

EM4-DIN AV4.3.4 / [5] 208V

L-L

, 5(10)A 18-60VDC [77-143VDC] AG2234 [AG2241]

EM4-DIN AV7.3.4 / [5] 660V

L-L

, 5(10)A 18-60VDC [77-143VDC] AG2235 [AG2242]

EM4-DIN AV6.3.4 / [5] 100V

L-L

, 5(10)A 18-60VDC [77-143VDC] AG2236 [AG2243]

Available models

Possible module combinations

Available modules

Power supply Self p.s. Auxiliary p.s.

Basic unit

Slot A Slot B Slot A Slot B

Digital inputs
RS485 Serial Output
(*) AV2 only

Type Channels Code

Open collector output 2 AO2900
Relay + open coll. output 2 AO2910

Power supply Self p.s. Auxiliary p.s.

Basic unit

Slot A Slot B Slot A Slot B

Open collector output
Relay + open coll. output

Type Channels Code

Digital inputs 2 AQ2940
RS485 Serial Output 1 AR2950

(*)

6

EM4-DIN

Wiring diagrams

20(90)A model: three-phase unbalanced load

Direct connection (3-phase system w/out N

)

Direct connection (3-phase system)

Direct connection (3-phase system + N)

Self-power supply Fig. 3

5(10)A model:
three-phase unbalanced load

Direct connection (3-phase system +

N)

Direct connection (3-phase system

with or without neutral)

CT connection (3-phase system with neu

tral)

Self-power supply Fig. 4

5(10)A model: three-phase unbalanced load

VT and CT connection (3-phase system)

20(90)A model:
three-phase unbalanced load

Auxiliary power supply Fig. 2

Auxiliary power supply Fig. 1

Auxiliary power supply Fig. 5

Auxiliary power supply Fig. 6

Auxiliary power supply Fig. 9

AC power supply AC power supply

AC power supply AC power supply

AC power supply

LOAD

LOAD

LOAD

LOAD

LOAD

LOAD

LOAD

CT ARON connection (3-phase system) VT and CT ARON connection (3-phase system)

Auxiliary power supply Fig. 8

Auxiliary power supply Fig. 7

AC power supply

AC power supply

LOAD

LOAD

7

EM4-DIN

Wiring diagrams (optional modules)

Only open collector outputs: the grounds of the outputs are separated, and therefore it’s possible to carry out, for the same
module, two different connections. The load resistance (Rc) must be designed so that the closed contact current is lower than
100mA; the VDC voltage must be lower than or equal to 30V. VDC: power supply voltage output. Vo+: positive output contact
(open collector transistor). GND: ground output contact (open collector transistor).

Open collector output Fig.10

VDC max 30V

PNP-NPN connections

Contact and voltage connection

2 and 4-wire connection

Digital inputs Fig. 12

Digital inputs Fig. 13 RS485 Serial output Fig. 14

Accuracy

Accuracy (RDG) depending on the current

Error

10A (Imax)
90A (Imax)
10A (Imax)
90A (Imax)

5A (Ib)
20A (Ib)
5A (Ib)
20A (Ib)

0,5A
2A
1A
4A

0,25A

1A

0.5A
2A

+1%

+4%

-4%

0%

+1.5%

-1%

EN 61036/ IEC 61036 limits (Active energy)

5(10A) Start-up current: 20mA
20(90A) Start-up current: 80mA

-1.5%

Accuracy (RDG) depending on the current

Error

+2%

+4%

-4%

0%

+2.5%

-2%

EN 61268/ IEC 61268 limits (Reactive energy)

5(6A) Start-up current: 20mA
20(90A) Start-up current: 80mA

-2.5%

Relay + open coll. output Fig. 11

10A (Imax)
10A (Imax)
90A (Imax)
90A (Imax)

5A (Ib)
5A (Ib)
20A (Ib)
20A (Ib)

0.25A

0.5A
2A
4A

0.1A

0.25A
1A
2A

sinϕ=1

sinϕ=0.5

sinϕ=1

sinϕ=0.5

PF=1

PF=L0.5

or C0.8

8

EM4-DIN

Terminal boards

Dimensions and panel cut-out

Open collector dual
output module

RS485
Serial output module

AO 2900

Relay output + open
coll. output module

AO 2910 AR 2950

Digital inputs module

AQ 2940

Keys for:

- values programming;

- function selection;

- displaying the measuring pages.

2. Display

LCD with alphanumeric indications to:

- display configuration parameters;

- display all the measured variables.

3. Removable label

It shows the following information:

- year of manufacturing

- serial number

- input voltages and currents

- operating frequency

- kWh measuring class

- kvarh measuring class

- symbols: electric system, attention and dual insulation.

4. Hidden dip-switch

Enable/disable the access to the programming procedure.

Front panel description

1. Key-pad

To program configuration parameters and to display variables.

S-key to enter programming and confirm selections;

1

2

3

4