Specifications are subject to change without notice

EM2-96DS0303

Insulation

among the voltage and the
current inputs: 2000 Vrms;
among the current inputs:
2000 Vrms

Temperature drift

±250 ppm/°C

Display

Backlighted LCD, h: 13mm,
6-dgt

Decimal point position

Automatic selection accord-
ing to the counted energy.
Max resolution: 1 Wh/1 VArh
Min. resolution: 1 KWh/1 KVArh

Max. and min. indication

Active energy

Max. 999999 min. 199999

Reactive energy

Max. 999999 min. 0

Sampling rate

3 times / second

Accuracy (48 to 62 Hz)

(@ 25°C ±5°C, R.H.

60%)

±1% RDG (kWh)
±2% RDG (kvarh) (hour
time base) PF

0.7L/C,

0 to 1.2 In, 0.5 to 1.2 Un

Additional errors

Humidity

<0.3% f.s., 60% to 90% R.H.

Power supply

±0.5% rdg, -15 +10% p.s.

Magnetic field

< 0.1% f.s. @ 400 A/m

Rated input

Current

2 inputs (one/three-phase
balanced load)
6 inputs (one/three-phase
unbalanced load)

Voltage

2 inputs (one/three-phase
balanced load)
4 inputs (one/three-phase
unbalanced load)

· Class 1 (active energy)
· Class 2 (reactive energy)
· Modular energy meter
· Front size: 96x96 mm
· 6-dgt µP-based indicator
· Manual scrolling of partial and total energies:

kWh, kVArh.

· TRMS measurement of distorted waves (voltage/current)
· All configuration functions selectable by

built-in key-pad

· Password protection of programming parameters
· Front reset of partial energies
· Degree of protection (front): IP 65
· Optional serial RS 422/485 port
· MODBUS, JBUS protocol.

Product Description

Model
Range code
System
Power supply
1st Output
2nd Output

Ordering Key EM2-96 AV53D XXX

µP-based modular energy
meter with a built-in configu-
ration key-pad. The energies
are both partial and total

counted. The housing is easy
to mount on a panel and
ensures a degree of protec-
tion (front) of IP 65.

Energy Management
Modular Energy meter
Type EM2-96

Type Selection

System

One phase,
three-phase system,
3 or 4 wires, balan-
ced load;
three phase system,
3 or 4 wires, unba-
lanced load

Range code

AV5:

250/433 VAC - 5 AAC
(max. 300 V (L-N)/
520 V (L-L) - 6 A)

AV7:

400/690 VAC - 5 AAC
(max. 480 V (L-N)/
830 V (L-L) - 6 A)

Power supply

24 VAC, -15% +10%,
50/60 Hz

1) 2)

48 VAC, -15%+10%,
50/60 Hz

1) 2)

115 VAC, -15%
+10%, 50/60 Hz

1) 2)

230 VAC, -15%
+10%, 50/60 Hz

(standard)

18 to 60VDC/AC

90 to 260VDC/AC

1st Output (contact)

XX:

No output (standard)

O1:

Single open collector
output (30V/100mADC)

O2:

Dual open collector out-
put, the second one is
the copy of the first one,
like "O1"

R1:

Single relay output,
(AC1-8AAC, 250VAC)

R2:

Dual relay output,
the second one is the
copy of the first one, like
"R1"

2nd Output

No output (standard)

Serial port, RS 485
multidrop bidirec-
tional with control
relay

Input Specifications

On request

Warning: This power supply cannot be used if the RS485

module is needed

Compatible with any kind of output

Specifications are subject to change without notice EM2-96DS0303

EM2-96

Contact port (on request)

Number of outputs

1, independent

Type

Driven only by the serial
communication

Static type

Open collector (NPN transistor)
V

1.2 VDC / max. 100mA

OFF

30VDC max.

Relay type

1 x SPDT
AC 1 - 8A, 250VAC
DC 12 - 5A, 24VDC
AC 15 - 2.5A, 250VAC
DC 13 - 2.5A, 24VDC
130.000 cycles

Insulation

By means of optocouplers,
4000 Vrms output to
measuring input,
4000 Vrms output to
supply input.

Serial port (on request)

Type

RS422/RS485;
Multidrop bidirectional
(static and dynamic
variables)

Connections

4 wires, max. distance
1200 m, termination directly
on the module

Addresses

1 to 255, selectable by key-pad

Protocol

MODBUS/JBUS

Data (bidirectional)

Dynamic (reading only)

System variables:
P, Q, PF, V

L-L

energies,
Single phase variables:
P

, Q

L1,

, V

L1-N

, A

, Q

, PF

, V

L2-N

, A

, Q

, PF

, V

L3-N

, A

For the accuracy information
refer to WM2-96

Static (writing only)

All programming data, reset
of energy:
- partial kWh
- partial kVArh
- total kWh
- total kVArh
Stored energy (EEPROM)

999999 kWh

999999 kVArh

Data format

1-start bit, 8-data bit, no
parity/even parity, 1 stop bit

Baud-rate

1200, 2400, 4800 and 9600
selectable bauds

Insulation

By means of optocouplers,
4000 Vrms output to
measuring inputs
4000 Vrms output to
supply input

Output Specifications

Measurements

Total energies

kWh, kvarh

Partial energies

kWh, kvarh
(the meters are automatical-
ly reset when the values
reach 14999*CT ratio).

Measurement method

TRMS measurement of a dis-
torted voltage/current wave
Coupling type: Direct
Crest factor:

Ranges (impedances)

250 V/433 V (

400k

)

5 AAC (

0.3 VA /

0.1

)

400V/690V (

650k

)

Frequency range

48 to 62 Hz

Over-load protection

Un: 250V (AV5), 400V (AV7),
In: 5A

Continuous: voltage/current

1.2 Un/In

For 1 s

Voltage:

2 Un

Current:

20 In

Input Specifications (cont.)

Keyboard

4 keys:
"

- to enter programming

phase and password con-
firmation;

- for value programming

and basic measurement
scrolling.

"E":

- for confirmation of new

programmed values and
going ahead to the next
programming step,

- total or partial energy

scrolling.

"R":

- for the reset of the partial

counted active and/or
reactive energy.

AC voltage

230 VAC (standard),
-15%+10% 50/60 Hz
24 VAC, 48 VAC, 115 VAC
(on request),
-15%+10% 50/60 Hz
18 to 60 VDC/AC
90 to 260 VDC/AC

Power consumption

30VA / 12W (90 to 260V)

20VA / 12W (18 to 60V)

Supply Specifications

Specifications are subject to change without notice

EM2-96DS0303

EM2-96

Slot

Basic unit

Out 1

Out 2

RS485 port
Dual relay output
Dual open collector output

Password

Numeric code of max. 3 di-
gits; 2 protection levels of
the programming data

1st level

Password "0", no protection

2nd level

Password from 1 to 255, all
data are protected

Measurement scrolling

total and partial active

energy (kWh),
total and partial reactive
energy (kVArh)
Partial energy meters:

the counters of kWh and
kVArh are automatically
reset when the energy
reaches the value
(14999*CT ratio).

Software Functions

Operating temperature

0° to +50°C (32° to 122°F)
(R.H. < 90% non-condensing)

Storage temperature

-10° to +60°C (14° to 140°F)
(R.H. < 90% non-condensing)

Insulation reference voltage

300 Vrms to ground

Insulation

4000 Vrms between all inputs/
outputs to ground

Dielectric strength

4000 Vrms for 1 minute

Noise rejection

CMRR

100 dB, 48 to 62 Hz

EMC

EN 50081-2, EN 50082-2

Safety standards

IEC 61010-1, EN 61010-1

Approvals

CE
UL, CSA

Connector

Screw-type,
max. 2.5 mm

wires x 2

Housing

Dimensions

96 x 96 x 140 mm

Material

ABS,
self-extinguishing: UL 94 V-0

Degree of protection

Front: IP65

Weight

Approx. 500 g
(packing included)

General Specifications

Type

N. of

Ordering

Note

channels

code

EM2-96 base + AV5.3 input

AC1014

EM2-96 base + AV7.3 input

AC1015

24VAC power supply

AP1025

Neither UL nor CSA approved

48VAC power supply

AP1024

Neither UL nor CSA approved

115VAC power supply

AP1023

Neither UL nor CSA approved

230VAC power supply

AP1022

Neither UL nor CSA approved

18-60VAC/DC power supply

AP1021

90-260VAC/DC power supply

AP1020

RS485 port

AR1034

Relay output

AO1058

Relay output

AO1035

The second output can be used as redoundant output

Open collector output

AO1059

Open collector output

AO1036

The second output can be used as redoundant output

The available modules

Slot

Basic unit

Out 1

Out 2

RS485 port
Single relay output
Single open collector output

The possible module combinations

Example: the CT is a
100A/5A so the ratio is 20,
consequently the maximum
counted energy is 299980
kWh or kVArh.

Transformer ratio

For CT up to 5000 A

Programmable ratio

0.1 to 999.9

Digital Filter

Filter operating range

0 to 100% of the
input electrical scale

Filtering coefficient

1 to 64

Filter action

Only on the variable being
transmitted by the serial
communication port

Specifications are subject to change without notice EM2-96DS0303

EM2-96

Figure G
Sine wave, undistorted
Fundamental content

100%

Harmonic content

rms

1.1107 I A |

Wiring Diagrams

Single phase input connections

I
I

CT connection

Direct connection

Three phase/3-wire input connections - Balanced loads

CT connection (3-wire system)

Direct connection (3-wire system)

Fig. 2

Fig. 1

Fig. 3

Fig. 4

Waveform of the signals that can be measured

Figure H
Sine wave, indented
Fundamental content

10...100%

Harmonic content

0...90%

Frequency spectrum 3rd to 16th harmonic
Required result: additional error < 1%

Figure I
Sine wave, distorted
Fundamental content

70...90%

Harmonic content

10...30%

Frequency spectrum 3rd to 15th harmonic
Required result: additional error < 0.5%

Mode of Operation

Specifications are subject to change without notice EM2-96DS0303

EM2-96

Front Panel Description

and

- To scroll all the basic measurements (system variables)
- To increase or decrease programming values
- To enter into the programming procedure and select

programming functions together with the "L" key

"E": To select the partial or total counted energy
"R": To reset the partial counted energies (kWh, kVArh).

2. Display

- 6-digit (maximum read-out 999999).
Alphanumeric indication by means of LCD display for:
- Displaying the configuration parameters
- All the measured variables.

1. Key-pad

Set-up and programming procedures are easily controlled
by the 4 pushbuttons.

Sequence of the variables on the display

total

partial

kVARh

kWh

kVARh

total

partial

Dimensions

Ð­Ð»ÐµÐºÑ‚Ñ€Ð¾Ð½Ð½Ñ‹Ð¹ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½Ñ‚: AC1014

ÐÐ»ÐµÐºÑ‚Ñ€Ð¾Ð½Ð½Ñ‹Ð¹ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½Ñ‚: AC1014