STRUMENTO MULTIFUNZIONE MONOFASE Lo strumento in questione occupa 1 DIN (18 mm) e si alloggia facilmente in un normale quadretto, anche di
tipo casalingo, che abbia la guida DIN, lo strumento va installato a “monte” dei dispositivi di protezione,
poiché una eventuale condizione di guasto non deve potersi propagare attraverso lo strumento (esempio un
corto circuito), l’alimentazione dello strumento avviene attraverso i morsetti inferiori 1 e 2, rispettivamente
fase in ingresso e fase in uscita il neutro va al morsetto superiore 4), i morsetti so+ ed so-, servono per
poter collegare lo strumento ad un sistema di acquisizione dati, per esempio un plc, arduino ecc, e fornisce
in uscita un impulso di caratteristiche note (vedere tab sottostante), il LED è multicolore, se lo strumento è
alimentato il suo colore è verde e sul display viene visualizzato il consumo registrato (NON azzerabile in
nessun modo), se c’è consumo il led farà dei lampeggi rossi, maggiore è la frequenza di lampeggio
maggiore è il consumo, ogni 1000 lampeggi viene registrato 1 kWh, quindi ogni 100 lampeggi viene
registrato un decimo di kWh, il display LCD mostra il consumo registrato, con una precisione del decimo di
kWh, l’ultima cifra registrata (dopo la virgola) rappresenta il decimo di kWh
Alla pressione del tasto, saranno visualizzate le seguenti schermate:
1.
2.
3.
4.
5.
Consumo in [kWh]
Tensione [V]
Corrente [A]
Frequenza [Hz]
Fattore di potenza [Adim.]
CARATTERISTICHE TECNICHE
Classe di Precisione
Installazione
Uscita SO+ e SO-
1
Su guida Din standard, 1 din= 18 mm
Uscita Tensione
Uscita I max
Max Lunghezza cavo so+ soLunghezza (T) impulso
<2W
6+1 digit, 888888,8
184-265 V
0.02-30A
15 mA
50-60 Hz
-20°C + 65°C
3200 lampeggi/kWh
6 mmq
RS485
Autoconsumo
Display LCD
Tensione di funzionamento
Corrente di funzionamento
Corrente avvio conteggio
Frequenza di funzionamento
Temperatura di funzionamento
Lampeggi per kwh
Max Sezione conduttori
Connessione esterna
INTERRUTTORE MAGNETOTERMICO
(DIFFERENZIALE SE NECESSARIO)
CONTATORE ENEL
MONOFASE
CONTATORE
RS 485 PER INTERFACCIARE IL PC
N
4
3
KWH
A B
1000 imp/kwh
230 V AC 5(30)A 50 Hz
F
Risponde alla DIN EN50022
18-27 V
27 mA
20m
30 ms
N
N
1
Lin
2
LOut
DISPLAY, Visualizza, A, V, Hz,P.
LED DI SEGNALAZIONE:
ROSSO LAMPEGGIANTE: CONSUMO IN ATTO,
MAGGIORE E' LA FREQUENZA DI LAMPEGGIO,
MAGGIORE E' IL CONSUMO, OGNI 1000 LAMPEGGI
VI E' IL CONSUMO DI 1 KWH, QUINDI OGNI 100
LAMPEGGI SI E' CONSUMATO UN DECIMO DI KWH
NOTE:
1. SEZIONE MASSIMA CONDUTTORI 6 MMQ
2. NON COLLEGARE SO+ E SO3. IL CONTATORE VA COLLEGATO A MONTE DEL
MAGNETOTERMICO (EVENTUALMENTE
DIFFERENZIALE)
TASTO PER CAMBIARE SCHERMATA
CARICO (MAX 30A 6,6 KW)
FIGURA 1: SCHEMA DI INSTALLAZIONE Eastron SDM120C User Manual
SDM120C
Single-Phase Energy Meters
RS485 Modbus RTU







Measures kWh, Kvarh, KW, Kvar, KVA, PF, Hz, dmd, V, A, etc.
Di-directional measurement IMP & EXP
Two pulse outputs
RS485 Modbus
Din rail mounting 17.5mm
45A direct connection
Better than Class 1 / B accuracy
User Manual V2.1
2014
Jiaxing Eastron Electronic Instruments Co.,Ltd.
Tel: 0086-573-83698881 83698882Fax: 0086-573-83698883
Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China.
Web: www.eastron.com.cn email: [email protected]
Eastron SDM120C User Manual
Application
The energy-meters “with a blue back-lighted LCD screen for prefect reading” are used to measure single-phase like
residential, utility and Industrial application. The unit measures and displays various important electrical
parameters, and provide a RS485 communication port for remote reading and monitoring. Bi-directional energy
measurement makes the unit a good choice for solar PV energy metering. The compact design and din rail
installation provides a easy and economical solution for your metering demand.
General Specifications
Voltage AC (Un)
Voltage Range
Base Current (Ib)
Max. Current (Imax)
Mini Current (Imin)
Starting current
Power consumption
Frequency
AC voltage withstand
Impulse voltage withstand
Overcurrent withstand
Pulse output rate
Display
Max. Reading
230V
176~276V AC
5A
45A
0.25A
0.4% of Ib
<2W/10VA
50/60Hz(±10%)
4KV for 1 minute
6KV-1.2uS wavform
30Imax for 0.01s
1000imp/kWh (default)
100/10/1 imp/kWh/kVarh (configurable)
LCD with blue backlit
99999.9kWh
Accuracy
Voltage
Current
Frequency
Power factor
Active power
Reactive power
Apparent power
Active energy
Reactive energy
0.5% of range maximum
0.5% of nominal
0.2% of mid-frequency
1% of Unity
1% of range maximum
1% of range maximum
1% of range maximum
Class 1 IEC62053-21
Class B EN50470-3
1% of range maximum
Jiaxing Eastron Electronic Instruments Co.,Ltd.
Tel: 0086-573-83698881 83698882Fax: 0086-573-83698883
Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China.
Web: www.eastron.com.cn email: [email protected]
Eastron SDM120C User Manual
Environment
Operating temperature
Storage and transportation temperature
Reference temperature
Relative humidity
Altitude
Warm up time
Installation category
Mechanical Environment
Electromagnetic environment
Degree of pollution
-25℃ to +55℃
-40℃ to +70℃
23℃±2℃
0 to 95%, non-condensing
up to 2500m
10s
CAT II
M1
E2
2
Output
Pulse Output
The meter provides two pulse outputs. Both pulse outputs are passive type.
Pulse output 1 is configurable. The pulse output can be set to generate pulses to represent total / import/export
kWh or kVarh.
The pulse constant can be set to generate 1 pulse per: 0.001(default) /0.01/0.1/1kWh/kVarh.
Pulse width: 200/100/60ms
Pulse output 2 is non-configurable. It is fixed up with total kWh. The constant is 1000imp/kWh.
RS485 output for Modbus RTU
The meter provides a RS485 port for remote communication. Modbus RTU is the protocol applied. For Modbus
RTU, the following RS485 communication parameters can be configured from the Set-up menu.
Baud rate: 1200, 2400, 4800, 9600
Parity: NONE/EVEN/ODD
Stop bits:1 or 2
Modbus Address: 1 to 247
Mechanics
Din rail dimensions
Mounting
Sealing
Material
17.5x119x62 (WxHxD) DIN 43880
DIN rail 35mm
IP51 (indoor)
self-extinguishing UL94V-0
Jiaxing Eastron Electronic Instruments Co.,Ltd.
Tel: 0086-573-83698881 83698882Fax: 0086-573-83698883
Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China.
Web: www.eastron.com.cn email: [email protected]
Eastron SDM120C User Manual
Initialization Display
When it is powered on, the meter will initialize and do self-checking.
Full Screen
Software version
Hello
Self-checking finished
After the self-checking program, the meter display will show the total active energy (kWh)
Scroll Display by button
There is a button on the front of the meter. After initialization and self-checking program, the meter display the
measured values. The default page is total kWh. If the user wants to check other information, he needs to press
the scroll button on the front panel.
Click the button, the LCD display will scroll the measurements.
Keep pressing the button for 3 seconds, the meter will get into set-up
mode.
Total active energy（kWh）
Display format：0000.009999.9910000.0
99999.90000.00
Import active energy（kWh）
Display format：0000.009999.9910000.0
99999.90000.00
Jiaxing Eastron Electronic Instruments Co.,Ltd.
Tel: 0086-573-83698881 83698882Fax: 0086-573-83698883
Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China.
Web: www.eastron.com.cn email: [email protected]
Eastron SDM120C User Manual
Export active energy（kwh）
Display format：0000.009999.9910000.0
99999.90000.00
Voltage (V)
Current (A)
Active power (W)
Frequency ( F )
Power factor ( PF)
Modbus Adress ( ID)
Default: 001
Baudrate
Default : 2400bps
Jiaxing Eastron Electronic Instruments Co.,Ltd.
Tel: 0086-573-83698881 83698882Fax: 0086-573-83698883
Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China.
Web: www.eastron.com.cn email: [email protected]
Eastron SDM120C User Manual
Set-up Mode
To get into Set-up Mode, the user need keep pressing the button for 3 seconds, the meter LCD will shows “-SET-“.
The user can program the meter parameters by sending correct command via RS485 port.
The protocol is Modbus RTU. For the details. Please look at the “Eastron SDM120C protocol”.
Wiring diagram
1：L-in 2: L-out 3/4: N
5/6/7: PO 2+ / Com / PO 1+
9/10：RS485 B/A
Dimensions
Installation
35
mm
D IN Rail
Jiaxing Eastron Electronic Instruments Co.,Ltd.
Tel: 0086-573-83698881 83698882Fax: 0086-573-83698883
Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China.
Web: www.eastron.com.cn email: [email protected]