Specifications are subject to change without notice EM2-DINDS0303
1
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)
(@ 25C 5C, R.H.
60%)
1% RDG (kWh)
2% RDG (kvarh)
(hour time base) (PF
0.7L/C,
0 to1.2In, 0.5 to 1.2Un)
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)
Insulation
among the voltage and the
current inputs: 2000 Vrms;
among the current inputs:
2000 Vrms
6-dgt P-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 40
Optional serial RS 422/485 output (provided with
control relay)
MODBUS, JBUS protocol.
Product Description
Model
Range code
System
Power supply
Output
Ordering Key
EM2-DINAV53D XX
P-based energy meter with
a built-in configuration key-
pad. The energies are both
partial and total counted. The
housing is easy to mount on
DIN-rail and ensures a
degree of protection (front) of
IP 40.
Energy Management
Energy meter
Type EM2-DIN
Type Selection
System
3:
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)
Power supply
A:
24 VAC, -15% +10%,
50/60 Hz
1)
B:
48 VAC, -15%+10%,
50/60 Hz
1)
C:
115 VAC, -15%
+10%, 50/60 Hz
1)
D:
230 VAC, -15%
+10%, 50/60 Hz
(standard)
Output
XX:
No output (standard)
XS:
Serial output, RS 485
multidrop bidirec-
tional with control
relay
1)
Input Specifications
1)
On request
2
Specifications are subject to change without notice EM2-DINDS0303
EM2-DIN
Relay output
(only with RS485 output)
Type
Driven only by the serial
communication
Contact Rating
1 x SPST (normally open)
2 A, 250 VAC/DC,
40 W/1200 VA 130.000 cycles
Insulation
By means of optocouplers,
4000 Vrms output to
measuring input,
4000 Vrms output to
supply input.
Serial output (on request)
Type
RS422/RS485;
Multidrop bidirectional
(static and dynamic
variables)
Connections
4 wires, max. distance
1200 m, termination and/or
line bias by means of DIP-
switches directly on the
instrument
Addresses
255, selectable by key-pad
Protocol
MODBUS/JBUS
Data (bidirectional)
Dynamic (reading only)
System variables:
P, Q, cos
, V
L-L
,
energies,
Single phase variables:
P
L1
, Q
L1,
PF
L1
, V
L1-N
, A
L1
,
P
L2
, Q
L2
, PF
L2
, V
L2-N
, A
L2
,
P
L3
, Q
L3
, PF
L3
, V
L3-N
, A
L3
For the accuracy information
refer to WM2-DIN
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:
3
Ranges (impedances)
250 V/433 V (
1 M
)
5 AAC (
0.3 VA /
0.1
)
Frequency range
48 to 62 Hz
Over-load protection
Continuous: voltage/current
1.2 x rated input
For 1 s
Voltage:
2 x rated input
Current:
20 x rated input
Input Specifications (cont.)
Keyboard
4 keys:
"
":
- to enter programming
phase and password con-
firmation;
- for value programming
and basic measurement
scrolling.
"L":
- 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.
Specifications are subject to change without notice EM2-DINDS0303
3
EM2-DIN
AC voltage
230 VAC (standard),
-15%+10% 50/60 Hz
24 VAC, 48 VAC, 115 VAC
(on request),
-15%+10% 50/60 Hz
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)
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
Software Functions
Power consumption
7 VA
Supply Specifications
Operating temperature
0 to +50C (32 to 122F)
(R.H. < 90% non-condensing)
Storage temperature
-10 to +60C (14 to 140F)
(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
Connector
Screw-type,
max. 2.5 mm
2
wires
Housing
Dimensions
6 DIN modules,
58.5 x 89 x 107 mm
Material
ABS,
self-extinguishing: UL 94 V-0
Degree of protection
Front: IP40
Weight
Approx. 500 g
(packing included)
Approval
CE
General Specifications
4
Specifications are subject to change without notice EM2-DINDS0303
EM2-DIN
Figure G
Sine wave, undistorted
Fundamental content
100%
Harmonic content
0%
A
rms
=
1.1107 I A |
Wiring Diagrams
Single phase input connections
1
3
5 6
8 9 10 11
12 13
15 16
17 18
20
22
24
26
1
3
5 6
8 9 10 11
12 13
15 16
17 18
20
22
24
26
CT connection
Direct connection
Three phase/3-wire input connections - Balanced loads
1
3
5 6
8 9 10 11
12 13
15 16
17 18
20
22
24
26
1
3
5 6
8 9 10 11
12 13
15 16
17 18
20
22
24
26
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
L
N
L
N
L1
L2
L3
L1
L2
L3
Load
Source
Load
Source
Load
Source
Load
Source
Specifications are subject to change without notice EM2-DINDS0303
5
EM2-DIN
1
3
5 6
8 9 10 11
12 13
15 16
17 18
20
22
24
26
Wiring Diagrams (cont.)
1
3
5 6
8 9 10 11
12 13
15 16
17 18
20
22
24
26
CT connection (4-wire system)
1
3
5 6
8 9 10 11
12 13
15 16
17 18
20
22
24
26
1
3
5 6
8 9 10 11
12 13
15 16
17 18
20
22
24
26
CT connection (4-wire system)
Direct connection (4-wire system)
Fig. 6
Fig. 10
Fig. 9
Direct connection (4-wire system)
Three-phase, 3-wire input ARON connections - Unbalanced load
Fig. 5
Three phase, 4-wire input connections - Balanced loads
1
3
5 6
8 9 10 11
12 13
15 16
17 18
20
22
24
26
CT connection (3-wire system)
Three phase, 4-wire input connections - Unbalanced load
Fig. 7
L1
L2
L3
N
L1
L2
L3
N
L1
L2
L3
L1
L2
L3
N
L1
L2
L3
N
1
3
5 6
8 9 10 11
12 13
15 16
17 18
20
22
24
26
Fig. 8
Direct connection (3-wire system)
L1
L2
L3
Load
Source
Load
Source
Load
Source
Load
Source
Load
Source
Load
Source
6
Specifications are subject to change without notice EM2-DINDS0303
EM2-DIN
Front Panel Description
- To increase or decrease programming values
- To enter into the programming procedure and select
programming functions together with the "L" key
"L": 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.
3. Connection terminal blocks
4. Dip-switch
- For the selection of 2/4 wire connection, line biasing
and/or line termination (only in case of RS 485 option)
1. Key-pad
Set-up and programming procedures are easily controlled
by the 4 pushbuttons.
"
" and "
"
- To scroll all the basic measurements (system variables)
EM 2 -D IN
EN ERGY M ETER
R
L
KWh
KVArh
TOT
L1
L2
L3
CARLO GAVAZZI
2
3
4
1
Sequence of the variables on the display
L
L
L
L
total
partial
kVARh
kWh
kWh
kVARh
total
partial
107 mm
8
9
m
m
9
0
m
m
108 mm
49.5 mm
58.5 mm
4
5
m
m
R
L
Dimensions
Upper terminal board
Lower terminal board
Terminal boards
4
6
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