Solenso DDSU666 Single Phase Smart Meter User Manual

Solenso DDSU666 Single Phase Smart Mete

Product Information

DDSU666 Single-phase Smart Meter
The DDSU666 Single-phase Smart Meter is a versatile and advanced metering device manufactured by Zhejiang CHINT Instrument & Master Co., Ltd. It is designed to accurately meter the positive/reverse active energy and combined active energy. The meter is equipped with a wide temperature LCD display and features a standard DIN35mm rail mounting structure, allowing for easy installation and networking. With its small size and modular design, it offers convenience and flexibility in various applications.

Model Composition and Significance
The model number of the DDSU666 Single-phase Smart Meter is ZTY0.464.1413. It is rated for a voltage of 230V and has an accuracy grade of 1.

Environmental Conditions

• Rated Temperature: -25°C to +55°C
• Limit Temperature: -40°C to +70°C
• Relative Humidity (average annual): 75%
• Atmosphere: 86kPa to 106kPa

Major Specifications and Parameters

• Types and Specifications:
  • Model No.: DDSU666
  • Accuracy Grade: 1
  • Referenced Voltage: 230V
• Percentage Error:
  • Current Specification: 100A/40mA
  • Transformer Access Type: 800imp/kWh
• Electrical Parameters:
  • Specified Operating Voltage Range: 0.9Un-1.1Un
  • Extended Operating Voltage Range: 0.7Un-1.15Un
  • Limiting Operating Voltage Range: 0.7Un-1.3Un
  • Voltage Line Power Consumption: 2W/10VA
  • Current Line Power Consumption: 2.5VA
• Other Technical Parameters:
  • Range of Measurement: 0-999999.99 kWh (6-digit display with automatic decimal shift)
  • Display Mode: LCD
  • Communication Protocol: Modbus-RTU
  • Key Components: SOC – SH79F7019, Crystal Oscillator
  • 32.768kHz, Power Transformer – ZTY6.170.234, Printed Circuit Board
  • ZTY8.067.2729/ZTY8.067.2730, Current Transformer
  • ZTY6.176.301

Product Usage Instructions

Metering Function
The DDSU666 Single-phase Smart Meter accurately meters the positive/reverse active energy and combined active energy. It ensures no data loss for the meter after a power interruption.

Display Function
The meter provides a clear display of relevant information on its LCD screen. Please refer to the user manual provided by the manufacturer for detailed instructions on the installation, setup, and configuration of the DDSU666 Single-phase Smart Meter.

Summarize

The main purpose and the suitable occasion
DDSU666 Single-phase Smart Meter ( Hereinafter referred to as “the instrument”) is designed for power monitoring and energy metering demand of the electric power system, communication industry, and construction industry. It is a new generation of intelligent instruments, integrated Communication, and Measurement, mainly used for the measurement and display of voltage and current, power, frequency, power factor, and active power in electrical circuits. It will realize the data network of external devices by RS485 communication. It uses a standard DIN35mm rail mounting structure and a modular design. It has the advantages of small size, easy installation, and easy networking. It is used widely for energy monitoring and assessment in industrial and mining enterprises, hotels, schools, and large public buildings.

Conform to the following standards

• IEC 61010-1:2010《Safety requirements for the electrical requirement for measurement， control, and laboratory use Part1:General requirements》
• IEC 61326-1:2013 《Electrical requirement for measurement， control and laboratory use –EMC requirements Part1:General requirements》

 Product Features

1. Accurately metering the positive/ reverse active energy and combined active energy, no storage data loss for the Meter after power interruption.
2. Use wide temperature LCD;
3. Use standard DIN35mm rail mounting structure, modular design. It has the advantages of small size, easy installation, and easy networking.

Model composition and significance

Environmental conditions

• Rated temperature: -25℃～+55℃;
• Limit temperature: -40℃～+70℃;
• Relative humidity(average annual):≤75％;
• Atmosphere: 86kPa～106kPa.

The overall principle block diagram
The following Figure 1 is the overall principle block diagram of the instrument.

The major specifications and parameter
types specifications

Model No.

| Accuracy

grade

| Referenced

voltage

| Current

specification

|

constant

|

type

---|---|---|---|---|---

DDSU666

| Active

power 1

|

230 V

|

100A/40mA

|

800imp/kWh

| Transformer

access

Note： in order to prevail in kind

Percentage error
The percentage error of a single-phase electric meter shall not exceed the following limit value.

Current value

| power

factor

| Percent error limit of

Each level meter

---|---|---
direct access

meter

| Connected with electronic

transformers

| |

1

0.05Ⅰb≤Ⅰ＜0.1Ⅰb| 0.02Ⅰn≤Ⅰ＜0.05Ⅰn| 1| ±1.5
0.1Ⅰb≤Ⅰ≤Ⅰmax| 0.05Ⅰn≤Ⅰ≤Ⅰmax| 1| ±1.0

0.1Ⅰb≤Ⅰ＜0.2Ⅰb

|

0.05Ⅰn≤Ⅰ＜0.1Ⅰn

| 0.5L| ±1.5
0.8C| ±1.5

0.2Ⅰb≤Ⅰ≤Ⅰmax

|

0.1Ⅰn≤Ⅰ≤Ⅰmax

| 0.5L| ±1.0
0.8C| ±1.0
The user’s special requirements| 0.25L| ±3.5
0.2Ⅰb≤Ⅰ≤Ⅰmax| 0.1Ⅰn≤Ⅰ≤Ⅰmax| 0.5C| ±2.5

Start
Under the condition of reference voltage and Table 4, the electric meter can start and continuously measure the electric energy.

instrument

| grade of electric meter|

power factor

---|---|---
1 grade
direct access meter| 0.004Ib| 1
| Connected with electronic

transformers

|

0.002In

| |
---|---|---|---|---

Creeping
The meter should have good anti creeping logic, when the voltage loop is applied with 1.15 times reference voltage and the current circuit is open, the meter will not produce more than 1 pulse.

Electrical parameters

Other technical parameters

Range of

measurement

| 0～999999.99 kWh（Only show 6 bits, decimal shift

automatically）

---|---
Display mode| LCD
Communication

protocol

|

Modbus-RTU

Key Components

（Notes： The actual plate number is determined according to the actual sample table）

Current transformer| ZTY6.176.301

Main functions

Metering function(Not as the basis for billing, for reference） Accurately metering the positive/ reverse active energy and combined active energy, no storage data loss for the Meter after power interruption。

Display function
The instrument adopts a field LCD design, characterized by a display function for electrical parameters and energy data. Please see the LCD display in Figure 2-3. The display bit of energy measurement value can be six bits, with a display range from 0 to 999999kWh.

Meaning of liquid crystal identificationThe measurement data pages display per 5 seconds, and the pages are as follows.

Display instructions

1

|

| Current positive  active energy Imp =

1.20kWh

2

|

| Current reverse active energy Exp =

1.00kWh

|

3

| |

Modbus

|
---|---|---|---|---

4

|

| 8Data bits,None

Parity,1 Stop

Bit

5

| |

Comm.Add=11

6

|

| baud rate to be

9600bps

7

| | Voltage

U=220.0V

8

| | Current

I=5.000A

9

| | Active power

P=1.100kW

10

| | Power factor

Ft=1.000

11

| | Frequency F=50.00Hz

The Meter can set the communication address and baud rate through buttons. Long press the button 3s, and the Meter will automatically enter into the communication address setting interface, with a cyclic display for setting the display interface of baud rate and communication address. Please press the button when required for baud rate or communication address settings, it will exit to communication address and baud rate settings without button operation for twenty seconds. The details are as follows:

Communication function
The Meter is equipped with one RS485 communication interface, with a baud rate changed between 1200bps and 9600bps. The default baud rate is 9600bps with check bit and stop bit to be n.1, communication address (see factory number or LCD display， Default address 03), support Modbus—RTU protocol

Parameter address

|

Parameter code

|

Instruction of the parameters

|

Type of data

| Length

of data Word

| Read&wri

te    attributes

---|---|---|---|---|---
0000H| RESERVED| RESERVED| 16-bit with symbols| 1|

0001H

|

REV.

| Reserved, actual read is the

version number

|

16-bit with symbols

|

1

|

R

0002H

|

ClrE

| Electric energy zero clearing

CLr.E(1:zero clearing)

|

16-bit with symbols

|

1

|

R/W

0003H| RESERVED| RESERVED| 16-bit with symbols| 1|
0004H| RESERVED| RESERVED| 16-bit with symbols| 1|
---|---|---|---|---|---
0005H| ChangeProtocol| Protocol changing-over| 16-bit with symbols| 1| R/W
0006H| Addr| Communication address Addr| 16-bit with symbols| 1| R/W
0007H| RESERVED| RESERVED| 16-bit with symbols| 1|
0008H| RESERVED| RESERVED| 16-bit with symbols| 1|
0009H| RESERVED| RESERVED| 16-bit with symbols| 1|
000AH| RESERVED| RESERVED| 16-bit with symbols| 1|
000BH| Meter type| Meter type| 16-bit with symbols| 1| R
000CH| BAud| Communication baud rate bAud| 16-bit with symbols| 1| R/W
000DH| RESERVED| RESERVED| 16-bit with symbols| 1|
000EH| RESERVED| RESERVED| 16-bit with symbols| 1|
000FH| RESERVED| RESERVED| 16-bit with symbols| 1|
0010H| RESERVED| RESERVED| 16-bit with symbols| 1|
Electric quantity of the secondary side

2000H

|

U

|

Voltage

| single precision

floating decimal

|

2

|

R

2002H

|

I

|

Current

| single precision

floating decimal

|

2

|

R

2004H

|

P

| Conjunction active power，the

unit is KW

| single precision

floating decimal

|

2

|

R

2006H

|

Q

| Conjunction reactive power，the

unit is Kvar

| single precision

floating decimal

|

2

|

R

2008H

|

RESERVED

|

RESERVED

| single precision

floating decimal

|

2

|

R

200AH

|

PF

|

Conjunction power factor

| single precision

floating decimal

|

2

|

R

200CH

|

RESERVED

|

RESERVED

| single precision

floating decimal

|

2

|

R

200EH

|

Freq

|

Frequency

| single precision

floating decimal

|

2

|

R

---|---|---|---|---|---

2010H

|

RESERVED

|

RESERVED

| single precision

floating decimal

|

2

|

R

Electrical data of the secondary side

4000H

|

Ep

|

Active in electricity

| single precision

floating decimal

|

2

|

R

400AH

|

-Ep

|

Reverse in electricity

| single precision

floating decimal

|

2

|

R

CLr.E: electric energy cleared when write 1 will clear the total electric energy;
BAud: 0:1200bps； 1:2400bps； 2:4800bps； 3:9600bps.

Output function

The electric energy pulse output interface of the meter is a passive photoelectric isolated output, and the output pulse waveform is 80 + 16ms square wave. Meter pulse indication uses long long-life LED display.

Externa and installation dimension

Installation and instructions for use

Check

1. Before installation, please check whether the model and specifications of the products on the box are in line with the material, if not, please contact the supplier;
2. Check if the packing case of the product is damaged, if damaged, please contact the supplier.

Install
Stuck the instrument on the guide rail directly, and installed the instrument and the rail in the distribution box.

1. when installed, stick the end of the card slot in the guide rail.
2. When uninstalled, use a screwdriver to press the card to remove the instrument

Connection
Terminal description
Prior to powering up, check the wiring is correct, the wiring diagram is as follows:

Diagnosis, analysis, and troubleshooting of common faults

No display after the instrument being powered on

| Incorrect wiring mode;

Abnormal voltage supplied for the instrument;

| If the wiring mode is incorrect, please connect based on the correct wiring mode (see the wiring diagram).

If    the    supplied    voltage is

abnormal,     please     supply     the

| | voltage      on

specification.

| the| instrument
---|---|---|---|---

Abnormal RS485 communication

|

The RS485 communication cable is disconnected, short circuit or reversely connected.

The address, baud rate, data bit and parity bit of the instrument is not in accordance with the host computer;

| If any problems for the communication cable, please reconnect or change the cable.

Set the address, baud rate,  data bit, parity bit to be the same as the host computer through buttons, for button settings, please

see “parameter setting”.

Inaccurate energy metering

|

for

| Incorrect wiring, please check whether the corresponding phase sequence of voltage and current is correct.

Check whether the high & low end of current transformer inlet is reversely connected. Please observe the power of Pa, Pb, Pc, to be

abnormal if any negative values.

|

If the wiring mode  is incorrect, please connect based on the correct wiring mode (see the wiring diagram).

Package, transportation, and storage

The packge of the meter should use a material that can meet environmental requirements. The storage environment temperature is -40℃～70℃， relative humidity should be no more than 75%. The package should meet the standards in GB/T 13384-2008, Conventional storage and transportation environment should meet the standards in GB/T 25480-2010. A complete set of packaging products, including the following:

1. A meter
2. A user manual
3. A packet of desiccant
4. Certificate

Mantenance and repair
If users find any quality problem within 18 months from the date of dispatch, our company is responsible for repairing or replacing for free, on the condition that users operate according to the manual’s provision with correct operation and the factory’s seal is complete.

Appendix A MODBUS-RTU Communication protocol
Communication format
Transmission of information is adopted asynchronous mode and byte as the unit. The communication data transmitted between the host and slave computer is the format of 11-digit bits, including 1 start bit(0), 8 data bits and 2 stop bits(1).

Format of information frame
Table A.1

Start

| Address

code

| Function

code

| Data

field

| CRC check

code

|

End

---|---|---|---|---|---
Pause time for more

than 3.5 characters

|

1 byte

|

1 byte

|

N bytes

|

2 bytes

| Pause time for more

than 3.5 characters

Communication information transmitting procedure

When a communication command is transmitted from the host computer to the slave device, the slave device which matches the address code sent by the host computer receives the communication command. If CRC checks without any fault, then the corresponding operation is carried out, after that, the implement result (data) is returned to the host computer. The returned information contains the address code, function code, implement date, and CRC check code. No information will be returned upon erroneous CRC verification code.

Address code
The address code is the first byte of each communication frame, the range is 1～247. Each slave must have an exclusive address code in the bus, only the slave device that matches the address code sent by the host computer can respond returned information. When the slave device returns back information, returned data all begins with respective address code. The address code sent from the host computer indicates the slave address, and the returned address code of the slave computer indicates the slave address. The corresponding address code indicates the source of the information.

Function code
It’s the second byte of each communication frame. It’s sent by the host and tells the slave computer what actions should be carried out. The slave will respond, which indicates the slave has responded to the host and carried out relative operations The returned function code of the slave is the same as the function code sent by the host. The meter supports the following two function codes

10H

| Write multi-port

register

|

Write n 16-digit binary data into n continuous registers

Data field
The data field is different with different function codes. These data can be numerical values, reference addresses, and so on. For different slave devices, both the address and data information are different, and the communication information table should be provided. The host utilizes the communicate command (function code 03H and 10H) to read and modify the data registers of the slave freely. However, the data length that is read or written at one time should not be out of the effective range of the data register’s address.

Function code
Function code 03H：Read register
For example, The host intends to read slave address 01H, 2 register data whose start register address is 0CH, then the host will send:

Table A.3

Start register address

| High byte| 00H
Low byte| 0CH

The number of registers

| High byte| 00H
Low byte| 02H
CRC check code| Low byte| 04H
| High byte| 08H
---|---|---

If the data of the slave register 0CH, 0DH is 0000H, 1388H, the slave will return:
Table A.4

Data of register 0CH

| High byte| 00H
Low byte| 00H

Data of register 0DH

| High byte| 13H
Low byte| 88H

CRC check code

| Low byte| F7H
High byte| 65H

Function code 10H：Write multi-port register
For example： The host intends to keep the data 0002H、1388H、000AH in 01H slave address， 3 registers whose start register address is 00H, the host will send:
Table A.5

Start register address

| high byte| 00H
low byte| 00H
The number of

registers

| high byte| 00H
low byte| 03H
Number of written bytes| 06H
Data of 00H to be| high byte| 00H
| written| low byte| 02H|
---|---|---|---|---
Data of 01H to be

written

| high byte| 13H
low byte| 88H
Data of 02H to be

written

| high byte| 00H
low byte| 0AH

CRC check code

| low byte| 9BH
high byte| E9H

The slave will return
Table A.6

Start register address

| high byte| 00H
low byte| 00H

The number of registers

| high byte| 00H
low byte| 03H

CRC check code

| low byte| 80H
high byte| 08H

16-digit CRC check code
The host and slave can be judged by the check code to see if the received information is correct or not. The interruption by electronic noises or other factors may cause errors during information transmission. The check code can check whether the communication information of the host or slave is correct or not. 16-digit CRC check code is calculated by the host, it’s located at the end of the transmit information frame. The slave recalculates the CRC of the received information and compares if the calculated CRC goes in line with the received CRC, if not, there is an error. Only 8 data bits are used during CRC calculation, both the start bits and the stop bits are not involved in the calculation. The calculation method of the CRC check code is as follows.

1. Pre-arrange one 16-digit register as a hexadecimal FF ( i.e. fully 1), the register is called CRC register;
2. Make the first 8-digit binary data ( the first byte of the communication information frame) with the lower 8 digits of the 16-digit CRC register by XOR calculation, the result is placed in CRC register;
3. Shift the content of the CRC register rightward by one digit (towards the lower digit) and fill in the highest digit with 0, check the shift-out digit after rightward shifting;
4. If the shift-out digit is 0: repeat step 3) (shift rightward one digit again); If the shift-out digit is 1: make CRC register with multinomial A001（1010 0000 0000 0001） by XOR calculation
5. Repeat step 3) and 4) until shift rightward for 8 times, then all the 8 digits are processed;
6. Repeat step 2) and 5), and process the next byte of the communication information frame;
7. After calculating all the bytes of the communication information frame (excluding CRC check code) according to the above steps, the content of the CRC register to be get is: 16-digit CRC check code.

Error handling
When the meter detects other errors except the error of CRC check code, the information will be returned to the host, the highest digit of the function code is 1, i.e. the function code returned to the host from the slave is adding 128 base on the function code sent from the host. The error returned from the slave is as follows:

Table A.7

Address

code

| Function code

（the highest digit is 1）

| Error

code

| low byte of CRC

check code

| high byte of CRC

check code

---|---|---|---|---
1 byte| 1 byte| 1 byte| 1 byte| 1 byte

The error code is as follows
Table A.8

01H| Illegal function code| the meter does not support the received function code
---|---|---
02H| Illegal register address| The received register address exceeds the register address
| | range of the meter
---|---|---

03H

| Illegal data value| The received data exceeds the data range of the

corresponding address

Dear Clients
Please help me to do one thing: when the product is reaching the end of its useable life, in order to protect our environment, please do well in recovery of the products or the component materials. Please also deal with the materials which cannot be recycled. Thank you very much for your help and support!

Statement

1. The products, services or functions you purchase are subject to the commercial contracts and terms signed with our company. All or part of the products, services or functions described in this manual may not be included in the scope of products you purchase.
2. Unless otherwise agreed in the contract, the company does not make any express or implied representation or warranty on the contents of this manual.
3. The information in this manual is subject to change without prior notice. The company shall not be liable for any indirect loss caused by the provision, display or use of this material.

2 4f,No.56,Zili 5th st,Zhongli Dist, Taoyuan City 320,Taiwan(RO.C.)
 info@Solenso-global.com
www.Solenso-alobal.com

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