Toky DW9L 3 Series User manual

DW9L Series 3 Phase Energy Meter Operation Manual
Toky Electrical Co., Ltd

This equipment can only be installed by professionals. The manufacturer will not be responsible for any failure caused by failure to follow the
instructions in this manual.
Thank you for choosing our products. In order to facilitate you to use this instrument safely, correctly and efficiently,
please read this manual carefully and pay attention to the following points when using it.
Note:
Risk of electric shock, burning or explosion
！
！
※Equipment can only be installed and maintained by qualified personnel
※Before making any operation, isolate the voltage input and power supply, and short-circuit the secondary windings of all current transformers。
※Using a suitable voltage detection device to confirm that the voltage has been cut off.
※Before the equipment is powered on, all mechanical parts, doors and covers should be returned to their original positions.
※The equipment should provide the correct rated voltage in using
Any operation not following the manual will cause accident and damage to the product
Information provided in this manual can be modified without prior notice.
The company reserves the right of interpretation of the information.

Ⅰ. Description
1.2 Features and Application
1.1 The instrument implements relevant national standards
Main Features:
※Large size segment LCD display, simple and convenient operation, rich interface information;
※Measyure parameter. like U、I、P、Q、S、PF、Hz etc.
※With 4-quadrant reactive power record function;
※Metering forward and reverse energy, reaching 12-hour multi-rate energy metering；
※Measuring demand statistics, maximum record function of U.I
※Measuring the voltage and current of power network in frequency 2-31harmonics,total harmonic distortion THD;
※Measuring power network quality parameters such as voltage and current imbalance of the power network;
※Supply 4 loopds digital input function, adopts dry node signal input mode
※Supply 2 loops alarm (250V/5A) digital input function: Can be used in variou places for over-limit alarm indication, protection control
output and remote control functions；
※Supply 1 loop active power, 1 loop reactive power analog output;
※Supply 1 loop RS485 communication, MODBUS-RTU communication procotol ( optional DLT645 protocol)
※Supply 1 loop analog transmission output 4-20mA；
Typical Application：
※Energy Management System ※Power Monitoring System
※Intelligent Building ※Intelligent Switchboard
※High and low voltage switch cabinet ※Distribution network automation
This instrument with high cost performance can directly replace the conventional measurement indicating instrument, energy meter,
harmonic measuring instrument and related auxiliary units. As an advanced intelligent, digital power grid front-end acquisition component, it
can be used in various control system and is with the features of easy to install, simple wiring, easy maintenance, small engineering
capacity, field programmable input parameters etc, also can complete the networking with the industry's different PLC, industrial control
computer communications software.
DL/T 614-2007
GB/T 17215.301-2007
GB/T 17215.322-2008
GB/T 17215.323-2008
DL/T 645-2007
GB/T 15284-2002
GB/T 14549-1993
GB/T 15543-2008
<Multifunction Energy Meter>
<Multifunction Harmonic Meter Special Requirements>
< 2nd and 3rd Class Static AC Active Power Meter>
<2nd and 3rd Level Static AC Reactive Power Meter>
<Multifunctional Energy Meter Communication Protocol>
<Multi-rate electric energy meter special requirements>
<Power Quality Public Power Harmonics>
<Three-phase voltage allows unbalance>
1

Function
1.3 Function List
1.4 Measurement Parameter Range
Indirect Measurement Range
Measurement
Parameter Accuraccy
2.0V～500KVVoltage 0.2%
0.02A～6000A
Current
0.2%
1W～100MW (negative consistent)
Active Power 0.5%
1var～1000Mvar ( negative consistent)Reactive Power 0.5%
1VA～100MVA
Apparent power 0.5%
-1.000～1.000Power Factor 0.5%
30Hz～500HzFrequency 0.2%
0～999999.99kWh(note)Active Energy 0.5%
0～999999.99kvarh (note)
Reactive Energy
Note: Energy metering is a secondary-side value. Please multiply the PT and CT values when you measure the electric energy.
2%
Real-time
measurement
3 phase voltage
Grid frequency
3 phase current
Zero phase current
3 phase active power
3 phase reactive power
3 phase apparent power
3 phase power factor
Positive sequence, negative sequence, zero sequence
Active Power
4-quadrant reactive power
Total Harmonic
32 times voltage harmonic rate
32 times current harmonic rate
4 rates, 12 period measurement
Active Power, Reactive Power and Maximum demand record
With a real-time clock that can be timed
Maximum of voltage and current
Unbalance of voltage and current
Undervoltage, overvoltage, undercurrent, overcurrent
Alarm Action
Programming parameters
Clear energy, demand, etc.
1 lopp active power, 1 loop reactive power 2
1
4
1 lopp 4～20mA transmission output
Passive dry contact
Energy Metering
Power Quality
Multi-rate
Demand
Clock
Record
Energy Pulse
Transmission Output
2
Alarm Output
Communication
AC250V/5A Remote control/ alarm
RS485: support MODBUS-RTU/DLT645-2007
Big size segment LCD display
Hole Size
Dimensions
2
1
92*92mm
96*96*100mm
Size
Display
DW9L-IRC38
Remark: “ ” standard ; “ ” optional
Switch Input

3
II.Technical Parameters
Input Measurement
Display
Item
Network
Rated value
Overload
Power Consumption
Accuracy
Rated Value
Overload
Power Consumption
impedance
Accuracy
AC3x220V/380V
3 phase 4 wires/ 3 phase 3 wire/ Single phase
Continuous:1.2 times Instantaneous:2 times/2s
<0.6VA (each phase)
>500kΩ
RMS measurement, Accuracy 0.2%
AC5A（AC1A can be ordered）
Continuous: 1.2 times Instantaneous: 2 times/2s
<0.4VA (each phase)
<20mΩ
RMS measurement, Accuracy 0.2%
Frequency
Power
Harmonic
Energy
Clock
Display
30--500HZ，Accuracy 0.01Hz
active, reactive, apparent power, accuracy: 0.5%
Power, Harmonic Accuracy: A
Active Power: accuracy 0.5S; Reactive Power: accuracy 2
Clock error：0.5s/d (Reference temperature：23℃)
Large screen segment LCD display
Power Supply
Consumption
Communication
Pulse
Alarm Output
Transmission Output
Switch Input
AC/DC 100V～240V
<8VA
1. RS485 Communication；
2. Correspond internation standard MODBUS-RTU protocol
3. Correspond national standard DLT645-2007 protocol；
4. Communication Baud Rate: 1200、2400、4800、9600、19200；
5. Checking Method: optional no checking, even checking, odd checking
Passive optocoupler collector output
relay output: capacity: 5A/250VAC or 5A/30VDC；
programmable alarm or remote control method；
4-20mA current analog output
remote: passive dry junction input
Working Environment
Storage Environment
Resistance
Insulation
Electrostatic discharge immunity
Electrical fast pulse group immunity
Surge immunity
RF conducted immunity
Power frequency magnetic field
immunity
Radiation immunity
-10～55℃
-20～75℃
Input and power >2kV, Input and output>2kV
Input, output, Power Supply Case>50MΩ
Correspond GB/T 17626.2-2006 3 level
Correspond GB/T 17626.4-2008 4 level
Correspond GB/T 17626.5-2008 4 level
Correspond GB/T 17626.6-2008 4 level
Correspond GB/T 17626.8-2006 4 level
Correspond GB/T 17626.3-2006
Voltage
Current
Performance parameters
Current
Output
Environment
Safety
Electromagnetic
Compatibility
impedance

3.1 Loading List
Meter Mounting brackets Instructions
1( PC ) 1（Set）1（PC）
Certification
1（PC）
4
III. Installation and wiring
3.2 Shape and mounting hole size
3.3 Installation method (as shown in the right figure)
3.4 Instrument terminal diagram
Rear view
1) Open 92*92 (mm) hole in fixed distribution cabinet;
2) Remove the meter and take out the fixed bracket;
3) The instrument is pressed into the mounting hole from the front;
4) Insert the instrument holder and tighten the screws to secure the
meter
Model
(mm)
96x96
Case Size
(mm)
91x91
Hole Size
(mm)
92x92+0.5
Length(mm)
100
Minimum installation distance
120
Horizontal Direction
120
Vertical direction
96.0
96.0
91.3
104.6
99.0
5.6
Panel Size Side Size
Power Meter
S E T E SC
3
4
DO1
DO2
DO3
P
DO4
v
v
v
B
A
C
COM1
This Sharp
Peak
Flat
THD
Unbl
MAX
Last
I II
Valley
Month
1
2
3
4
5
6
7
8
9
0
L(+)
N(-)
NO
NC
ACOM
NO
NC
AO+
AO-
10
11
12
13
14
15
16
17
18
19
B-
A+
COM
S1
S2
S3
S4
RP
AP
PCOM
20
21
22
23
24
25
26
27
28
29
Ua(Ua)
Ub
Uc(Uc)
Un(Ub)
IA*
IA
IB*
IB
IC*
IC
92.0mm
92.0mm

Energy Pulse
Voltage Signal Input
Current Signal Input
Description:
17
18
19
20
21
22
23
24
25
26
27
28
29
RP
AP
PCOM
UA(Ua)
UB
UC(Uc)
UN(Ub)
IA*
IA
IB*
IB
IC*
IC
Reactive energy pulse poer
Active energy pulse port
Pulse output common port
3 phase 4 wires A phase voltage input(3 phase 3 wires A
phase voltage input)
3 phase 4 wires B phase voltage input
3 phase 4 wires C phase voltage input(3 phase 3 wires C
phase voltage input)
3 phase 4 wires 0 phase voltage input(3 phase 3 wires B
phase voltage input)
A phase current inflow
A phase current outflow
B phase current inflow
B phase current outflow
C phase current outflow
5
①The brackets in the voltage input terminal indicate the 3 phase 3 wires connection
。
Category
Power
3.5 Terminal corresponding wiring chart
Alarm or remote control
output
Transmission Output
Blank
Communication
Switch Input
Corresponding
terminal number
1
2
3
4
5
6
7
8
9
0
10
11
12
13
14
15
16
L(+)
N(-)
NO
NC
ACOM
NO
NC
AO+
AO-
Blank
B-
A+
COM
S1
S2
S3
S4
Optional AC and DC power supply；
Range：AC：85～265V DC:100～240V
NO: 1st alarm open
NC:1st alarm close
Alarm or remote control
NO:2nd alarm open
NC:2nd alarm close
4～20mA outflow positive
4～20mA outflow negative
Unused
RS485 Negative communication
RS485 Positive communication
Switch input common (communication mask access point)
Switch input 1st loop
Switch input 2nd loop
Switch input 3rd loop
Corresponding
letter
Input and output
directions
Input
Input
Output
Output
Output
Output
Output
Output
Output
Output/Input
Output/Input
Input
Input
Input
Input
Input
Output
Output
Output
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Description
②The current "*" is the current input terminal, all outgoing lines must be unified. Otherwise, the measurement will be inaccurate.
③If there is any change in the wiring, please take the wiring diagram of the instrument case as the standard.
C phase current inflow
Switch input 4th loop

3.6 Connection Drawing
Ua Uc Ub
Ia* Ia Ib* Ib Ic* Ic
6
A
B
C
N
24 25 26 28 2927
Ua Un
Ua UcUb Un
23
21 22
20
24 25 26 28 2927 23
21 22
20
24 25 26 28 2927 2321 2220 24 25 26 28 2927 2321 2220
24 25 26 28 2927 23
21 22
20
24 25 26 28 2927 23
21 22
20
low pressure: 3 phase 4 wires
Ua Ub Uc Un
Ia* Ia Ib* Ib Ic* Ic
A
B
C
N
Ua Uc Ub
Ia* Ia
L
N
Ia* Ia
L
N
Ia* Ia Ic* Ic
A
B
C
Ia* Ia Ic* Ic
A
B
C
Ua Un
①When the input voltage is higher than the rated input voltage of the product, you should consider using a PT. For ease of maintenance, it is
recommended to use a wiring board.。
②The standard rated input current is 5A, 1A or greater than 5A, the external CT should be used. If there are other meters connected to the CT, the wiring
should be connected in series. Before removing the current input connection of the product, it is necessary to disconnect the primary circuit of the CT
or short the secondary circuit. It is recommended to use the terminal block for maintenance.
③To ensure that the input voltage and current correspond, the phase sequence is consistent and the direction is the same, otherwise there will be errors
in the values and symbols of power and energy, etc.。
④The instrument can work in 3 phase 4 wires mode or 3 phase 3 wires mode. The user should select the appropriate wiring mode according to the field
use conditions. The 3 phase 3 wires mode is generally used without a center line, and the 3 phase 4 wires mode is used with a center line. It should be
noted that the on-site wiring must be the same as the wiring set in the meter, otherwise the meter's measurement data is incorrect.
Note:
low pressure: 3 phase 3 wires
high pressure: 3 phase 4 wires low pressure: 3 phase 3 wires
low pressure: single phase high pressure: single phase

7
The instrument has a universal (AC/DC) power input interface. If no special explanation is given, it is a standard product of AC220V power interface. The limit working voltage
of the instrument is AC 85-265V. Please ensure that the supplied power is suitable for this series. Products to prevent damage to the product. Also recommended:
①It is recommended to use AC power to install 1A fuse on the side of the line of fire；
②For areas with poor network quality, it is suggested that a surge suppressor be installed in the power circuit to prevent lightning strikes and a fast pulse train suppressor be
installed.
3.7 Power Supply
This meter with relay output function can be used for alarm indication and protection control output function in various occasions. When the digital output
is valid, the relay output is on, and when the digital output is off, the relay output is off.
①High Alarm
When the high alarm indicates that the alarm threshold is higher than the alarm item, the relay switch output turns on.
②Low Alarm
When the low alarm indicates that the alarm threshold is lower than the alarm item, the relay switch output turns on;
③Remote control relay
If the relay output control is selected as the remote control mode, the output of the relay is set to “remote control” through the programming operation,
and the output of the relay can be controlled through communication.
3.8 Relay output
3.9 Switch Input
Meter
Inside
3.10 Analog output
3.11 Energy Pulse Output
The instrument has a switch input detection function and adopts the dry node signal input method. The instrument is equipped with a +24V working power
supply inside, and no external power supply is required. When it is connected externally, it is collected by the instrument switch input module DI, and the
interface shows that it is in the open state. When it is disconnected externally, it will be disconnected through the digital input module DI of the instrument
collector, and the interface will be in the open state.
The instrument has an analog output function and can be set by any of 26 power levels. The analog output of the instrument can be used to achieve the
analog output function of the electrical parameters (4-20mA).
Electrical parameters: output: 4-20mA, accuracy:±0.5%F.s
Overload: 120% effective output, maximum current 24mA
Load: Rmax = 600Ω
Energy metering and pulse output: the meter provides positive and negative active energy metering, 2 loops energy pulse output functions and RS485 digital interface to
complete the display and remote transmission of energy data. The energy pulse (resistance signal) of the photocoupler relay with open-collector level is used to realize the
remote transmission of active energy (forward) and reactive energy (forward), and the remote computer terminal, PLC and DI switch acquisition module is used to collect the
instrument. The total number of pulses to achieve energy cumulative measurement. Use the pulse output method to check the accuracy of the electrical energy (national
measurement procedures: comparison method of pulse error of the standard form)。
①Electrical characteristics: VCC<=48V IZ<=50mA in the circuit diagram of the pulse acquisition interface
②Pulse constant: 9000 imp/kWh(kvarh),the fastest pulse speed does not exceed 200mS. Its significance is: when the meter accumulates 1kWh (1kvarh) output pulse
number is 9000.
L(+) AC:85～265V
working
power DC:100～240V
N(-)
3
4
5
6
7
1
2
8
9
NO Opened
NC Closed
1st loop alarm
2nd loop alarm
ACOM
Alarm Commom
Point
NO Opened
NC
COM
S1
S2
S3
S4
Closed
12
13
14
15
16
Switch input commom
point
Switch input1
Switch input2
Switch input3
Switch input4
AO+
load: 600Ωmax
AO-
17
RP reactive energy pulse output
active energy pulse output
pulse commom point
AP
PCOM
18
19
Meter
Inside

8
Key symbol Key Name
Confirm Key
Left shift key
Right shift key
Reduce key
Increase key
return key
1. short press to switch display categories:
instantaneous electrical parameters→ voltage
harmonic→current harmonic→ Multi-rate electricity
2. long press to enter setup menu
backward turning in the display class
forward turning in the display class
lower power display switch back
lower power display forward switch
short press for the lower power display column and
return to integrated active power display
enter the next menu
visit last parameter
visit next parameter
enter the parameter modification status
enter the parameter modification status
confirm the changes
cursor left
cursor right
decrease of value
increase of value
exit the last operation until you exit the setup menu
Measurement Mode Setting Mode
parameter selection status
4.2 Display Area Description
3.12 Communication Output
IV. Operation Instructions
4.1 Panel diagram
The device has a two-wire RS-485 communication port with terminals labeled A+, B-. High-speed optocoupler isolation and protection circuits prevent common-mode and
differential-mode voltage interference, lightning strikes, and miswiring from damaging the communications port.
The RS-485 communication mode allows a maximum of 32 instruments to be connected on one bus. In this case, an RS-232C/RS-485 converter is required. The
communication cable can be an ordinary shielded twisted pair cable. The total length cannot exceed 1200 meters. The positive and negative polarity of the RS-485 port of
each device must be connected correctly, and one end of the cable shield is grounded. If the shielded twisted pair is long, it is suggested to connect a 120Ω resistor at the end
to improve the reliability of communication.
Power Meter
S E T E SC
SET
E SC
3
4
DO1
DO2
DO3
P
DO4
v
v
v
B
A
C
COM1
This Sharp
Peak
Flat
THD
Unbl
MAX
Last
I II
Valley
Month
4.3 Key Description Form
1
7
4
8
62
3
5
No.
1
2
3
4
5
6
7
8
Display Description
Communication indicator: The indicator will keep blinking while it is passing
Switch input indicator, when a certain amount of switch is closed, the corresponding switch display frame will be filled with solid. If the second
way switch is turned on, the display state is as follows：
Alarm or remote output indicator: When an alarm occurs, the corresponding output indicator will be filled with solid. Such as:：
Display the current display category of the data display area: like the voltage corresponds to "U", the current corresponds to "A", etc.
Measurement data real-time display area, can display the voltage, current, power etc
Indicating the corresponding rate
of multi-rate：
Power display area: Measurement range is 0～999999.99, Exceeding the maximum will automatically flip
10
11
B-
A+
Please use shielded twisted pair connection
RS485
8 8
THD
Unbl
MAX
Indicate total harmonic content
Indication imbalance
Indicates the maximum
S 2
DO2
This
Last I
II
Month
Month
Last Month
indicate this month
indicate last month
indicate last two months
Sharp
Peak
Flat
Valley
indicate“sharp”
indicate“peak”
indicate“flat”
indicate“valley”
Parameter modification
status

① Press "SET" key to switch display categories, namely, instantaneous electrical parameters → voltage subharmonic → current subharmonic → complex rate →
instantaneous electrical parameters；
②In a certain display class, the display is displayed by pressing the " " and " " keys;
③In the instantaneous electrical parameters, voltage sub-harmonics, and current sub-harmonics, the energy can be viewed through the “ ” and “ ” keys, which are:
integrated active energy → positive active energy → negative active energy → integrated reactive energy → positive reactive energy → negative reactive energy →
first quadrant reactive energy → second quadranteactive energy → third quadrant reactive energy → fourth quadrant reactive energy
9
4.4 26 English letters display method on LED:
Because this instrument uses a pen-type liquid crystal, it may not be intuitive when displaying characters. Therefore, when reading ambiguity
occurs, please check according to the following form. The characters that appear in the instrument have been mapped to the following form.
English letter
display method
English letter
display method
A B C D E F G H I J K L M
N O P Q R S T U V W X Y Z
Display category
Measurement display page list
4.5 Measurement display page description
Instantaneous electrical parameters
Display content
Screen 1 3 phase voltage（press“ESC” key to display 3 phase wire voltage)
3 phase current
system frequency
Voltage imbalance
maximum voltage
total harmonic content of voltage
total harmonic content of current
3 phase voltage 2nd harmonic content
3 phase voltage 31th harmonic content
0 phase current
Current imbalance
maximum current
3 phase current 2nd harmonic content
3 phase current 31th harmonic content
3 phase active power
3 phase reactive power
3 phase apparent power
3 phase power factor
Combined power and power factor
Maximum demand
Current demand
Screen 2
Screen 3
Screen 6
Screen 4
Screen 5
Screen 7
Screen 8
Screen 9
Screen 12
Screen 10
Screen 11
Screen 13
Screen 14
Screen 17
Screen 15
Screen 16
Voltage
Harmonics
Current
Harmonics
Multi-rate electricity
… …
Screen 1
Screen 30
… …
Screen 1
Screen 30
date
time
monthly sharp energy
monthly peak energy
monthly flat energy
monthly valley energy
valley energy last two month
flat energy last two month
…
…
Screen 1
Screen 2
Screen 3
Screen 4
Screen 5
Screen 6
Screen 13
Screen 14
3
4
DO1
DO2
DO3
P
v
v
v
B
A
C
COM1
3
4
DO1
DO2
DO3
P
%
COM1
3
4
DO1
DO2
DO3
P
%
COM1
3
4
DO1
DO2
DO3
P
DO4
COM1

10
4.6 Menu Operation Illustration
Menu Structure and Function Description
Under user menu status
1. Press “ SET ” key more than 3 second, if the user password is set, it will pop up the password input box, input the correct password to enter the user’
menu to modify the patameter.
2. If the current display is the first class, press confirm key “ SET ”, to enter next class display, click “ ”、“ ” key to change the menu item 。
3. If the current display is second or third class , press “ ESC ” key to return to previous class display
4. If the current display is third class，press “ ”、“ ” key to flash digit, press key “ ”、“ ” to shift place，Keep pressing “ ”、“ ”
to change value; press confirm key “ SET ” to keep the value; If press the “ ESC ” key, it does not save the set value and return to second class.
5. After modifying the parameters, press “ ESC ”,to exit user menu, return to measuring status.
Input “1111”to clear energy;Input “2222”to clear maximum demand; Input “3333” to clear event;
Input“4444”to clear the maximum of voltage, current; input “1234” to reset to factory setting
Setting user password
System
Setting
Clear Energy
Signal Input
Select the input network of the measured signal
Primary coil voltage , unit kV
Network
Volt transform
User password
Backlight delay time , unit is second . If set as 0 , mean keep on lighting all the time.
Software version
Backlight time
Software version
1st Level 2nd Level 3rd Level Description
Secondary coil voltage , unit V
Primary coil current , unit A
Secondary coil current ,unit A
Current transform
Volt transform
Meter Address Range
Baud Rate:1k2 means 1200,2k4 means 2400,4k8means 4800,9k6 means
Address
Baud Rate /
/ /
/
/
Communication Parameter
Data sequence: high word first or low word first
Data order
Checking Bit
ADD 1
ADD 2
Protocol Selection
ADD 4
ADD 5
No check/even check/odd check
DLT645 address 1, two decimal number display
DLT645 address 4, two decimal number display
DLT645 address 5, two decimal number display
DLT645 address 6, two decimal number display
DLT645 address 2, two decimal number display
MODB: select MODBUS-RTU protocol D645:select DLT645 protocol
ADD 3 DLT645 address 3, two decimal number display
/ /
/
ADD 6
Current transform
9600,19k means19200

11
Alarm mode
Alarm Action Value
Alarm hysteresis value
Alarm Unit
Alarm start delay
Alarm finish delay
When character “ do ” is remote control mode, otherwise it is alarm mode
reference "4.9 alarm, transmission parameter comparison chart"
1st alarm value setting, consistent with the basic display unit
alarm start delay time , unit : second
alarm finish delay time , unit : second
1st alarm hysteresis value setting, consistent with the basic display unit
1: means international standard unit, K: means 1000 times of international
standard unit, M: means1000000 times of international standard unit.
Alarm relay setting 1st alarm relay output setting
/ /
/
Switch
2nd loop alarm parameter setting way refers to the 1st loop alarm
Continued from the front chart
Period 12 rates, 0,1,2,3 stands sharp, peak, flat, valley
Period 1 Start Time
Period 2 Start Time
Period 12 Start Time
Period 12 rates
Period 1 Start time
Period 2 Start time
Period 12 Start time
Multi-rate
setting
Minute
Second
Minute
Second
Period 1 rates, 0,1,2,3 stands sharp, peak, flat, valley
Period 2 rates, 0,1,2,3 stands sharp, peak, flat, valley
Period 1 rates
Period 2 rates
Time setting
Year
Month
Day
Hour
Year
Month
Day
Hour
Transmit high limit
Transmit low limit
Analog output
Transmit output 20mA
Transmit output 4mA
Transmit mode selection Refer to “4.9 alarm, transimission parameter comparison chart”
Transmit unit 1: means international standard unit, K: means 1000 times of international
standard unit, M: means1000000 times of international standard unit.
/ /
Settings

12
4.7 Menu modification example
②Setting the communication address method
Instrument address setting
communication setting
Primary current setting
（Unit:A）
Secondary current setting
（unit:A）
1st level
2nd level
3rd level modified state
modified state
measure state
system setting
sin
>5s
SET
>5s
SET
SET
SET
SET
SETSET
1st level
2nd setting 3rd setting
measure state
system setting
signal setting
①Setting the current ratio method

13
For example：The sharp, peak, flat, valley time set by Shenzhen Power Supply Bureau are as follows
Peak hours：09:00-11:30、14:00-16:30、19:00-21:00（total 7 hours）；
Flat hours：07:00-09:00、11:30-14:00、16:30-19:00、21:00-23:00（total 9 hours）；
Valley hours：23:00- next time 07:00（total 8 hours）
The meter settings are as follows：
Note: For correspondence, the corresponding multi-rate period is divided into 96 segments by 15 minutes per day for 24 hours a day, from 0-95,0 to
00:00 for a 24-hour system, and 95 to 24:45 for a 24-hour system, corresponding to the time It is the start time of the rate energy during this period.
4.8 Multi-rate setting instructions
①The 0, 1, 2, and 3 in the rate menu correspond to Sharp, Peak, Flat, and Valley rates, respectively. Customers can choose to use Two or
more of these rates;
②The rate corresponds to the start time of the rate in that period. Similarly, customers can use only 2 or more of these hours.
Rate menu
FL1 2
1
2
1
2
1
2
3
3
3
3
3
07.00
09.00
11.30
14.00
16.30
19.00
21.00
23.00
23.00
23.00
23.00
23.00
07:00
09:00
11:30
14:00
16:30
19:00
21:00
23:00
23:00
23:00
23:00
23:00
FL2
FL3
FL4
FL5
FL6
FL7
FL8
FL9
FL10
FL11
FL12
Flat
Peak
Flat
Peak
Flat
Peak
Flat
Valley
Valley
Valley
Valley
Valley
Setting value Remark Setting value Remark
28
36
46
56
66
76
84
92
92
92
92
92
Corresponding
communication value(note)
FT1
FT2
FT3
FT4
FT5
FT6
FT7
FT8
FT9
FT10
FT11
FT12
Time menu
Multiple rate schedule correspondence form
hour
0 0 0
0
0
0
1
1
1
1
2
2
2
2
3
3
3
3
15
30
45
0
15
30
45
0
15
30
45
0
15
30
45
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
minute period hour
4 0 16
4
4
4
5
5
5
5
6
6
6
6
7
7
7
7
15
30
45
0
15
30
45
0
15
30
45
0
15
30
45
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
minute period hour
8
032
8
8
8
9
9
9
9
10
10
10
10
11
11
11
11
15
30
45
0
15
30
45
0
15
30
45
0
15
30
45
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
minute period hour
12 0 48
12
12
12
13
13
13
13
14
14
14
14
15
15
15
15
15
30
45
0
15
30
45
0
15
30
45
0
15
30
45
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
minute period hour
16 0 64
16
16
6
17
17
17
17
18
18
18
18
19
19
19
19
15
30
45
0
15
30
45
0
15
30
45
0
15
30
45
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
minute period hour
20 0 80
20
20
20
21
21
21
21
22
22
22
22
23
23
23
23
15
30
45
0
15
30
45
0
15
30
45
0
15
30
45
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
minute period

14
Problem
V. Simple Troubleshooting
No display after adding control
power
Power failed to join the device
Incorrect voltage measurement
Incorrect current measurement
Incorrect power measurement
Switching voltage
No control command received
Incorrect relay operation mode
The measurement value is
incorrect or does not meet
expectations
Switch status does not change
Relay does not operate
The upper end cannot
communicate with the device
Device communication address is incorrect
Device communication rate is incorrect
Communication link is not connected to terminating
resistor
Communication link is disturbed
Communication line interruption
Check whether the correct operating voltage is added to the L/+ and N/- terminals of the device
Check if control power fuse is burned
Check if the neutral connection is reliable
Check whether the measured voltage matches the rated parameter of the equipment
Check if the PT ratio parameter setting is correct
Check whether the measured current matches the rated parameter of the device
Check CT ratio parameter setting is correct
Check the measurement mode setting is correct
Check the voltage and current phase sequence is correct
Check the current name is wrong
Check whether the external node type matches the device's rated parameters
Check the external wiring is correct
Check the communication link is correct
Check current relay is in correct mode
Check whether the device address is consistent with the definition
Check whether the device communication rate is consistent with the definition
Check whether the 120 ohm resistor is added
Check that the communication shield is well grounded
Check the communication cable is disconnected
Reason Solution
Parameter Switch output (low alarm) code transmission output（4-20mA）code
4.9 Alarm output and transmission output parameter
Switch output (high alarm) code
Ua(A phase voltage)
Ub(B phase voltage)
1
3
1
2
2
4
EP（total active power)
EQ（total reactive power)
unbalance
unbalance
30
31
57
59
61
58
60
62
F frequency 29（FL）
（EPL）
（EQL）
（FH）
（EPH）
（EQH）
（F）
（EP）
（EQ）
0 wire current 3263 64（InL）（InH） （In）
0（no）
65
67
66
68
（UNNB）
（INNB）
（ULNB）
（PNNB）
（UaL）
（UbL）
（UaH）
（UbH）
（Ua）
（Ub）
53
55
54
56
PFc(C phase power factor)
PF(total power factor)
27
28
（PFcL）
（PFL）
（PFcH）
（PFH）
（PFc）
（PFs）
Uc(C phase voltage)
U( phase voltage of A, B or C)
I(phase current of A、B、C)
UL(wire voltage of AB、BC、CA )
Uab(AB wire voltage)
Ubc(BC wire voltage)
Uca(CA wire voltage)
Ia(A wire current)
Ib(B wire current)
Ic(C wire current)
Pa(A phase active power)
Pb(B phase active power)
Pc(C phase active power)
P(total active power)
Qa(A phase reactive power)
11
12
14
16
18
20
12
13
14
15
16
17
5
7
9
11
13
15
17
19
22
24
26
28
30
32
34
3
4
5
6
6
7
8
8
9
10
10
21
23
25
27
29
31
33
（UbcH）
（UcaH）
（ULH）
（IaH）
（IbH）
（UbcL）
（UcaL）
（ULL）
（IaL）
（IbL）
（IcL）
（IL）
（PaL）
（PbL）
（PcL）
（PL）
（QaL）
（IcH）
（IH）
（PaH）
（PbH）
（PcH）
（PH）
（QaH）
PFb(B phase power factor) 51 52 26
Qb(B phase reactive power)
Qc(C phase reactive power)
Q(total reactive power)
Sa(A phase apparent power)
Sb(B phase apparent power)
Sc(C phase apparent power)
S( total apparent power)
PFa(A phase power factor)
18
19
20
21
22
23
24
25
36
38
40
42
44
46
48
50
35
37
39
41
43
45
47
49
（QbL）
（QcL）
（QL）
（SaL）
（SbL）
（ScL）
（SL）
（PFaL）
（PFbL）
（QbH）
（QcH）
（QH）
（SaH）
（SbH）
（ScH）
（SH）
（PFaH）
（PFbH）
（Qb）
（Qc）
（Qs）
（Sa）
（Sb）
（Sc）
（Ss）
（PFa）
（PFb）
（UcL）
（UL）
（UabL）
（UcH）
（UH）
（UabH）
（Ubc）
（Uca）
（no）
（Ia）
（Ib）
（Ic）
（no）
（Pa）
（Pb）
（Pc）
（Ps）
（Qa）
（Uc）
（no）
（Uab）

15
VI.Event record description
Event recording is currently an optional feature and can only be read through communications. The specific instructions are as follows:
6.1 Event Types
6.2 Event Record Format
6.3 Reading of event records
ADD
XX
Order
03
Data ADD
45 XX
Data length
Event Type
1
2
3
4
5
6
7
8
9
10
1
No. Correspondence data
2
3
4
5
6
7
8
9
10
Power on the meter
Event Desciption
modified parameter
Clear Energy
Clear Demand
Clear Event
Clear maximum
1st alarm action
1st alarm end
2nd alarm action
2nd alarm end
1-10 Year Month Day Hour Minute Second
Event Occurred Time
00 07
CRC
XX XX
A total of 32 groups of events were included, both of which included event types and times. The event record uses a sequential recording
method: the first record is always the most latest event and extends back to a total of 32 records. Records older than the latest 32 records
will be discarded.
Eg, To read the latest first record, the data is as follows：
“01 03 45 00 00 07 13 EC”
Answers are as follows：
“01 03 0E 00 01 00 0E 00 09 00 12 00 11 00 07 00 21 0C F7”
Indicates that the event is a modified parameter. The moment of occurrence is2014-9-18 17:07:33
Including the followed 10 types：

16
7.1 MODBUS-RTU protocol
VII. Communication Protocol Description
7.2 Communication frame format description
7.1.1 Meter meets MODBUS-RTU communication protocol,adopts RS485 half-duplex communication to check 16-bit CRC. The meter does not return
the check error.
7.1.2 Data Format
The following chart shows the meaning of exception error codes:
7.1.3 Communication frame format
7.1.4 Communication exception handling
Start Bit
error code Name Description
0X01
0X02
0X03
0X04
Function code error
Variable address error
The limit of the data value
Incorrect or out of frame length
The meter received an unsupported function number
The data value sent by the host exceeds the data range corresponding to the instrument or the data
structure is incomplete
The function code and the communication frame length are inconsistent or request exceeds the limit
Frame Content Bytes Instructions
Slave Station Add 1
1
2
Valid slave address range is 1-247
The length of data that needs to be read or written
The location where the data area is stored when the slave executes a valid command. Different variables occupy different
number of registers, some address variables occupy two registers, 4 bytes of data, some variables occupy a register, 2
bytes of data, please use according to the actual situation
Function Code
Data Add
2
Data length
Slave station returns data or master data to be writtenVariable
Data
The MODBUS-RTU mode uses 16-bit CRC. The sending device shall calculate CRC16 on each data in the parcel, and the
final result shall be stored in the test domain. The receiving device shall also calculate CRC16 on each data (other than the
check field) in the parcel and compare the result field check fields. Only the same package can be accepted.
If the master sends an illegal packet or if the master requests an invalid data register, an abnormal data response will be generated. This abnormal data response
consists of the slave address, function code, fault code, and check field. When the high-order bit position of the function code domain is 1, it indicates that the data
frame at this time is an abnormal response.
According to MODBUS communication requirements, abnormal response function code = request function code + 0x80; when abnormal response occurs,
the highest position of function number is 1. For example, if the host request function number is 0x04, the function number returned from the slave corresponds to
0x84.
7.1.5 Communication frame delay
7.2.1 Function Code“03”:Read multiple register input
Eg: The host reads the UA (A phase voltage), and it is measured that the A phase voltage is 220.0V. The UA's address code is 0x4000
because UA is a fixed-point number (4 bytes) and occupies 2 data registers. The corresponding hexadecimal data of 220.0V is:
0x0000898 (2200)。
Host sent message format: (default high word first)
There should be an appropriate delay between the requests from the master station for the two frames. When the baud rate is 9600. In order
to ensure a correct response, it is recommended that a 300mS delay be reserved between the two frames. When the baud rate decreases,
the communication delay should increase appropriately.
2CRC Check Code
Read one or more current register values
Writes the specified value to an internal register
0X03
0X06
0X10 Writes the specified value to multiple internal registers
Data Bit Checking Bit Stop Bit
1 8 None, Even, Odd checking(Programmable) 1
①All RS485 loop communication should follow master and slave mode.In this way, information and data are transferred between a single master station and up
to 32 slave stations (monitoring devices);
②The master station will initialize and control all the information transmitted on the RS485 communication loop;
③In any case, communication cannot be started from a slave station
④Communication on all RS485 loops takes place in a "packaged" manner. A data packet is a communication frame. A packet can contain up to 128 bytes.
⑤The master station sends called request and the slave sends called response.；
⑥In any case, the slave can only respond to one request from the master station;
Hosting Sending
Slave address
Function Code
Start Add
Data Length
CRC Code
Bytes
1
1
2
2
2
Information Send
01
03
0x4000
0x0002
0xD1CB
Remark
Send to slave at address 01
Read register
Start Add
Read 2 registers (4 bytes in total)
The host calculates the CRC code
The host specified data location is over the range of the meter or an illegal register operation has been
received

17
7.2.2 function code “06”：wrinting ingle register
7.2.3 function code “10”：write multiple register
Packet format sent by the host：
The format of the message returned from the slave response correctly
Slave response
Slave address
Function code
Initial address
Save data word length
CRC Code
Bytes
1
1
2
2
2
Send Message
01
10
0x4900
0x0002
0x1795
Example
From slave 01
Writing multiple register
Starting address is 0000
Save 2 words of data
The CRC code calculated by the host
Return message format from slave response：
Packet format sent by the host:
eg:Host writes fixed-point number 1st alarm mode AD1. Assume that the address code of AD1 is 0x4900 because AD1 is a fixed-point number
and occupies 1 data register, and decimal 11 corresponds to 0x000B.
eg：Host writes fixed-point number 1st alarm mode AD1. Assume that the address code of AD1 is 0x4900 because AD1 is a fixed-point
number and occupies 1 data register, and decimal 11 corresponds to 0x000B.
Return message format from slave response：
Slave response
Slave address
Function code
Reading
Register data
CRC code
Bytes
1
1
1
1
1
1
1
2
Returned information
01
03
04
0x00
0x00
0x08
0x98
0xFC59
Remark
From slave 01
Read register
2 registers total 4 bytes
High byte of contents at address 0x4000 memory
High byte of contents at address 0x4000 memory
Low byte of contents at address 0x4000 memory
The CRC code calculated by the host
Host sending
Slave address
Function code
Initial address
Write data
CRC code
Bytes
1
1
1
1
1
1
2
Send Message
01
06
0x49
0x00
0x00
0x0B
0xDE51
Example
Sending to slave 01
Writing single register
High byte of data
Low byte of data
The CRC code calculated by the host
Host sending
Host sending
Slave address
Function code
Initial address
Data word length
to be written
To write data bytes long
Write data
CRC Code
Bytes
1
1
1
1
1
1
1
1
1
2
Send Message
01
10
0x49
0x00
0x01
0x00
0x02
0x00
0x0B
0x3F53
Example
Sending to slave 01
Writing multiple register
The high byte of the starting adrress of the register to be written
The low byte of the starting adrress of the register to be written
The word length of the write data is low byte
The word length of the write data is high byte
The byte length of data (1 byte in total)
High byte of data
Low byte of data
The CRC code calculated by the host
Slave address
Function code
Initial address
Write data
CRC code
Bytes
1
1
1
1
1
1
2
Send Message
01
06
0x49
0x00
0x00
0x0B
0xDE51
Example
Sending to slave 01
Writing multiple register
High byte of data
Low byte of data
The CRC code calculated by the host
Low byte of contents at address 0x4000 memory
The low byte of the starting adrress of the register to be written
The high byte of the starting adrress of the register to be written
The high byte of the adrress of the register to be written
The low byte of the adrress of the register to be written

18
7.3 Power meter communication address mapping
Instantaneous electrical parameter communication address
7.2.4 CRC code calculation method
Attched：CRC calculation C language source code
①Preset a 16-bit register to hexadecimal FFFF (that is all 1); call this register CRC register；
②Compare the first 8-bit binary data (the first byte of the communication message frame) with the lower 8 bits of the 16-bit CRC register and place the result in the
CRC register.
③Move the contents of the CRC register one bit to the right (towards the lower bit) to fill in the highest bit with 0 and check the shifted-out bit after the right shift;
④If the shift-out bit is 0: repeat step 3 (right shift one bit again); if the shift-out bit is 1: CRC register and polynomial A001 (1010 0000 0000 0001) XOR;
⑤Repeat steps 3 and 4 until right shift 8 times so that the entire 8-bit data is all processed；
⑥Repeat Step 2 to Step 5 to process the next byte of the communication message frame.
⑦After all the bytes of the communication information frame are calculated according to the above steps, the high and low bytes of the obtained 16-bit CRC register
are exchanged;
⑧The final CRC register content is: CRC code.
unsigned int GET_CRC(unsigned char * buf,unsigned charnum)
{
unsigned chari,j;
unsigned int WCRC = 0xffff;
for(i=0;i<num;i++)
{
WCRC ^= (unsigned int)(buf[i]); // Cyclic redundancy check
for(j=0;j<8;j++)
{
if(WCRC&1)
{
WCRC >>= 1;
WCRC ^= 0XA001;
}
else
WCRC >>= 1;
}
}
return(WCRC); // Get CRC check code
}
3 0x4004 Phase voltage C 2 long R
4 0x4006 Wire voltage AB 2 long R
5 0x4008 Wire voltage BC long R
6 0x400a Wire voltage CA 2 long R
2
0.1V
1 0x4000 Phase voltage A long
2 0x4002 Phase voltage B 2 long
2
R
R
2
7 0x400c Phase current A 2 long R
8 0x400e Phase current B 2 long R
9 0x4010 Phase current C long R
10 0x4012 Active power A 2 long R
0.001A
17 0x4020 Total reactive power
Apparent power A
2 long R
18
19
20
21
22
0x4022
Power factor A
2 long R
23
0x4024
Power factor B
2 long R
24
0x4026
Power factor C
Apparent power B
Apparent power C
Total apparent power
2 long R
0x4028 2 long R
0x402a 2 long R
0x402c 2 long R
0x402e 2 long R
0.1VA
0.001
11 0x4014 Active power B 2 long R
12 0x4016 Active power C 2 long R
13 0x4018 Total active power 2 long R
14 0x401a Reactive power A 2 long R
15 0x401c Reactive power B 2 long R
16 0x401e Reactive power C 2 long R
0.1W
0.1var
27 0x4034 2 long RActive power
26
25
0x4032
0x4030
2
2
long
long
R
RTotal power factor
Frequency 0.01Hz
0.001kWh