Zhejiang DDSU666.004.0006 Single Phase DIN Rail Meter User Manual

Zhejiang DDSU666.004.0006 Single Phase DIN Rail Meter User Manual

Zhejiang Chint Instrument & Meter Co., Ltd. May, 2019

DDSU666.004 .0006type single phase electronic energy meter(DIN-Rail)| ZTY0.464.1224
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Operation manual| Page 1, Total 21

• Brief IntroductionMain application & applicable range

Type DDSU666 single phase electronic energy meter (din-rail) (hereinafter referred to as the “instrument”) is designed based on power monitoring and energy metering demands for electric power system, communication industry, construction industry, etc. as a new generation of intelligent instrument combining measurement and communication function, mainly applied into the measurement and display for the electric parameters in the electric circuit including voltage, current, power, frequency, power factor, active energy, etc. The network can be realized through RS485 communication interface and external device. Adopting the standard DIN35mm din rail mounting and modular design, it is characterized with small volume, easy installation and easy networking, widely applied into the internal energy monitoring and assessment for industrial and mining enterprises, hotels, schools, large public buildings.

Complied standards:

IEC62052-11 《 Electricity metering equipment(AC)-General requirements,

tests and test conditions- Part11:Metering equipment  》；
IEC62053-21《Electricity metering equipment(AC)-Particularrequirements-Part21: Static meters for active energy(classes 1 and 2)》；

MODUS-RTU protocol.

• Product Features
• Metering the positive and negative active power;
• Adopting wide LCD, it has clear vision.
• RS485 communication function with communication protocol complied with Modbus-RTU；
• Adopting DIN35mm standard din rail mounting, structural modular design, it is characterized with small volume, easy installation and easy
• Model composition and meanings

DDSU666.004.0006 type single phase electronic energy meter(DIN-Rail)| ZTY0.464.1036
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Operation manual| Page 2, Total 21

Model composition and meanings

1. Applicable environmental
   Regulated working temperature range: -25℃～+60℃； Limited working temperature range: -35℃～+70℃； Relative humidity(Annually average):75％； Atmospheric pressure:86kPa～106kPa。

2. Working Principle
   The working principle block diagram of the instrument is shown in figure 2
   

Main Technical Performance & Parameters

Model specification

Table 1 Model specification

Model

| Accuracy

class

| Frequency| Reference

voltage

| Current

specification

| Instrument

constant

|

Type

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

DDSU666.004.0004

| Active

Class 1

| 60Hz|

230 V

|

5(80)A

|

800imp/kWh

| Direct

connection

DDSU666.004.0004

| Active

Class1

|

60Hz

|

230 V

|

1.5(6)A

|

6400imp/kWh

| Via

transformer

Note: Please take the physical sign as standard.

• Percentage error

Table 2 Percentage error of single phase energy meter not exceeding the below corresponding

Type

|

Current range

|

Power factor

| Percentage error limit of each class instrument（%）
---|---|---|---
Class 1

Via CT

| 0.01In≤I＜0.05In| 1| ±1.5
0.05In≤I≤Imax| 1| ±1.0
0.02In≤I＜0.1In| 0.5L、0.8C| ±1.5
0.1In≤I≤Imax| 0.5L、0.8C| ±1.0

Direct connection

| 0.05Ib≤I＜0.1Ib| 1| ±1.5
0.1Ib≤I≤Imax| 1| ±1.0
0.01Ib≤I＜0.2Ib| 0.5L、0.8C| ±1.5
0.2Ib≤I≤Imax| 0.5L、0.8C| ±1.0

remark

| In：secondary rated current of CT; Ib：calibrated current of the energy meters; L:inductive；  C：capacitive

Start

Table 3 Under the referenced voltage and table 4, the energy meter can be started and continuously measure the energy

Instrument

| Accuracy class of the energy meter|

Power factor

---|---|---
Class 1
Direct connection| 0.004Ib|

1

Via transformer| 0.002In

• Defluction

The electric energy meter should have good anti-defluction logic. When the voltage loop with

1.15 times of referenced voltage and the current loop is disconnected, the energy will not produce more than one pulse.

• Electrical parameters

Table 4 Electrical parameters

• Other technical parameters

Table 5 Other technical parameters

Measuring range| 0～999999.99 kWh（only display 6 bit,，automatic shift of decimal point）
---|---
Display mode| LCD display
Communication

protocol

|

Modbus-RTU protocol

• Adoption for key components

Table 6 Adoption for key components

 |  | 5（80）A : ZTY8.067.2729V2、ZTY8.067.2730V2

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

|
---|---|---|---
Current transformer| ZTY6.176.301

2. Main functions
   • Metering function
   • Accurately metering the positive and negative active power;
   • The storage data of the electric energy meter will not lost after powering
   • Displayed functions

When the energy meter is in normal working condition (on load state), the positive pulse indicator should be flashed. If long time for no flashing or light for the indicator, please check whether the wiring mode of the energy meter is right or not.。

Table 7 LCD logo meanings

voltage

A| The unit of the current, the display data of indicating LCD is

current

W| The unit of the active power, the display data of indicating LCD is

active power

var| The unit of the reactive power, the display data of indicating LCD

is reactive power

 | Hz| The unit of the frequency, the display data of indicating LCD is

frequency

|
---|---|---|---
kWh| The unit of the active energy, the display data of indicating LCD is

active energy

The display time of the measurement data is five seconds and information sample for every page of the measured information of measurement data (if not consistent with the instrument panel, please take the object as standard.)
Light time of the background: 1 min.

Table 8 Display Instruction

Keyboard operation: After pressing the button for a long time, the display interface enters the switching interface of setting 645 protocol and Modbus protocol. Shortly press can switch the protocol, not the address page (only the ModBus protocol can be switched to the address page), the address of ModBus can be set by the button, the button can set the address range 1-99

Communication function

The instrument adopts RS485 communication mode with baud rate to be set as 1200, 2400bps,4800bps and9600bps.
For a same communication circuit, it can at most be connected with thirty-two instruments at the same time, with each instrument to be set as their communication address. For the communication connection, it should use shielded twisted pair with copper mesh with  wire diameter not below
0.5mm2 . On wiring arrangement, the communication line shall be away from strong cable or other strong electric field with the maximum transmission distance to be 1200m. For the typical networking connection mode, please see the below figure, users can select other suitable connection mode based
ondetailed conditions.

Figure 4Schematic diagram of communication connection

When the instrument is set to be ModBus-RTU transmission mode, ModBus-RTU communication protocol adopts host-slave response in one communication line. Firstly, the host computer’s signal will seek for a terminal device (slave) with only one address, then the terminal device will produce response signal and transmit to the host computer in opposite direction, that is, half duplex working mode. This protocal only allows communication between the host (PC, PLC, etc.) and the terminal device, rather than data exchanges between the independent terminal devices. Thus, each terminal device will not occupy the communication circuits in their initialization, and only be limited to response the query signal to the host computer.

The instrument can provide ModBus-RTU communication protocol (see appendix A), for the parameter information to be read or modified by the communication, please see the below table.

Table9Communicationparameterinformation

Parameter address

|

Parameter code

|

Instruction of the parameters

|

Type of data

| Length of data

Word

|

Read&write attributes

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

0000H

|

UCode

|

Programming password codE

| 16-bit with

symbols

|

1

|

R/W

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

|

Urat

|

RESERVED

| 16-bit with

symbols

|

1

|

0008H

|

Irat

|

RESERVED

| 16-bit with

symbols

|

1

|

0009H

|

RESERVED

|

RESERVED

| 16-bit with

symbols

|

1

|

000AH

|

RESERVED

|

RESERVED

| 16-bit with

symbols

|

1

|

000BH

|

RESERVED

|

RESERVED

| 16-bit with

symbols

|

1

|

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

ChangeProtocol such as protocol switching, data for 2 for Modbus RTU protocol -, data to 1 for DL/T 645-2007；

The CLr. E power reset write 1 removal of total power；

BAud rate: 1:2400bps;             2:4800bps;           3:9600bps；；

4.4Outline &Mounting Dimension

Outline dimension: 36mm×98mm×65mm；

Din rail mounting dimension: 35mm, with configuration to be shown as figure 4:

6. Installation & Operation Instruction

• Inspection
• Before installation, firstly check whether the model and specification of the product on the package is the same as the object. If not, please contact the supplier.
• Check whether the product shell in the carton is damaged, if is, please contact the
• Installation

Directly clip the instrument on the rail and install it on the distribution box.

1）When installing, firstly clip one terminal of the slot and then clip to the rail with power. 2）Whendisassembling, pressthemovablecardwitha screwdriver and takeout theinstrument.

• Wiring mode
• Instruction of wiring terminal

Before powering, you must check whether the wiring mode of the instrument is correct, and the wiring diagram is shown as below:

Diagnosis, analysis and elimination of common faults

Fault

phenomenon

| Analysis of causes| Troubleshooting| Remark
---|---|---|---
Display fault| The wiring may not| Check if the actual connection is| While checking
 | connected| the same as the requirement of the| the
 | according to the| wiring diagram. Pay special| connection, be
 | wiring diagram of| attention to “N” position of the| sure the meter
 | the meter| voltage, the high&low end of the| is in the state
 |  | current and terminal labeling are| of
 |  | different from actual number.| disconnection,
 |  |  | guarantee the
 |  |  | safety of human life.

---|---|---|---
Communication| The communication| Check if the communication setting|
fault| setting| information such as communication|
 | information of the| address, baud rate, verification|
 | meter may be| mode is the same as the PC settings.|
 | incorrect|  |

If the above method cannot eliminate the fault, please contact with the after- sale service of digitalmeterfromZhejiangCHINTInstrument Co.,Ltd.

6. Transportation & Storage

The package of the instrument shall adopt materials complied with environmental protection, under package condition, the instrument and accessories shall be stored in the dry and ventilated places, to avoid humidity and corrosive gas erosion, with the limited environmental temperature for storage to be

-40℃～+70℃ and relative humidity not exceeding 75%.

The package of the instrument shall comply with the provisions of GB/T 13384-2008 of General specifications for packings of mechanical and electrical products with the environmental temperature requirement and transportation for the normal storage complied with the provisions of GB/T 25480-2010 of Basic environmental conditions and testing methods for instruments transportation and storage

Complete set of package for single product, including:

• One set of instrument
• One operation manual
• One bag of desiccant
• Certificate

10. Maintenance & Service

We guarantee free reparation and change for the multi-meter if found any unconformity with the standard, under circumstance of that the users fully comply with this instructions and complete seal after delivery within 18 months.
Appendix A: MODBUS-RTU Communication Protocol

• Communication format

Information transmission adopts asynchronous mode, taking byte as the unit. The communication date transmitted between the host and slave computer is the format of 10-digit characters, including one start bit(0), 8 data bits without check bit, two stop bits(1)(other format can be customized).
Format of information frame:

Table A.1

Start

|

Address code

| Function

code

|

Data field

| CRC check

code

|

End

---|---|---|---|---|---
More              than 3.5-character

dead time

|

1 character

|

1

character

|

n characters

|

2 characters

| More                       than 3.5-character

dead time

• Communication information transmitting procedure

When communication command is transmitted from the host computer to the slave computer, the slave computer which matches the address code sent by the host computer receives the communication command. If CRC checks without any fault, then the corresponding operation will be carried out, after that the implement result (date) is returned to the host computer. The returned information contains address code, function code, implement date and CRC check code.

• Address code

Address code is the first byte of each communication frame, with the range from 1 to 247. Each slave must have an exclusive address code in the bus, only the slave computer which matches the address code sent by the host computer can respond returned information. When the slave computer returns the information, the returned data will begin with their respective address codes. The address code sent from the host computer indicates the slave address, the returned address code from the slave computer indicates the slave address, while the corresponding address code indicates where the information comes from.

• 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 through function code. The slave will respond, and the functional code is the same as that sent by the host computer, which indicates that the slave computer has responded the host and complemented the relative operation.

The instrument supports the following two function codes:

Table A.2

Function

code

|

Definition

|

Operation

---|---|---
03H| Read register| Read one or several register data

10H

| Write multichannel

register

|

Write n 16-bit binary data into n continuous registers

• Data area

The data field will be different based on different function codes. These data can be numericalvalues, reference addresses and so on. For different slave computers, both the address and data information are different, and the communication information table should be provided.

The host utilizes communicate command (function code 03H and 10H) to read and modify the data registers of the slave freely. But the data length which is read or write at one time should not be out of the effective range of the data register’s address.

• Brief introduction of function code
  • Function code 03H：Read register

For example: The slave address which the host intends to read is 01H, the start register address is two register data of 0CH, sent by the host:

Table A.3

Start register address

| High byte| 00H
low byte| 0CH

Register number

| High byte| 00H
low byte| 02H

CRC 校验码

| 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

Register 0CH data

| High byte| 00H
low byte| 00H
Register 0DH data| High byte| 13H

CRC check code

| low byte| F7H
High byte| 65H

• Function code 10H：Write multi-port register

For example：The host intends to save data of 0002H, 1388H, 000AH into the slave address of 01H，the start register address is the three registers of 00H, sent by the host:Sent by the host:

Table A.5

Start register address

| High byte| 00H
low byte| 00H

Register number

| High byte| 00H
low byte| 03H
Write bytes| 06H
The data to be written in

00H register

| High byte| 00H
low byte| 02H
The data to be written in

01H register

| High byte| 13H
low byte| 88H
The data to be written in

02H register

| High byte| 00H
low byte| 0AH

CRC check code

| low byte| 9BH
High byte| E9H

Returned by the slave

Table A.6

Start register address

| High byte| 00H
low byte| 00H

Register number

| High byte| 00H
low byte| 03H

CRC check code

| low byte| 80H
High byte| 08H

• 16-digit CRC check code

The host or slave computer 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.

16-digit CRC check code is calculated by the host, located at the end of the transmit information frame. The slave recalculates the received information of CRC 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 CRC check code is stated as follows：

• Pre-arrange one 16-digit register as a hexadecimal FFFF ( i.e. fully 1), the register is called CRC register;
• 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;
• Shift the content of 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;
• 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 by XOR calculation

• Repeat step 3) and 4) until shift rightward for 8 times, then all the 8 digits are processed;
• Repeat step 2) and 5), process the next byte of the communication information frame;
• After calculating all the bytes of the communication information frame (exclude 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（top

digit is 1）

|

Error code

| CRC check code

low byte

| CRC check code

High byte

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

Error code is as follows：

Table A.8

01H| Illegal function code| The function code received is not supported by the instrument
---|---|---

02H

| Illegal register

address

| The register address received is out of the register address range

03H

| Illegal data value| The data value received is out of the corresponding address data

range

Dear clients,

Please assist us: when the product life is end, to protect our environment, please recycle the product or components, while for the materials that cannot be recycled, please also deal with it in a proper way. Really appreciate your cooperation and support.

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References

• 正泰集团股份有限公司

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