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407
ADW350 Wireless Metering Meter
Installation and Use Manual V1.0
Acrel Electric Co., Ltd.
Declaration
The copyright is the property of Acrel. Any information in any paragraph
or section cannot be extracted, copied or otherwise reproduced or
propagated. Otherwise offenders shall take all consequences.
All rights are reserved.
Acrel reserves the right to modify the product specifications herein
without notification. Please consult the local agent about the latest
specifications before placing a purchase order.
Contents
Declaration ................................................................................................................................. 1
1 Overview................................................................................................................................. 3
2 Product model and specification............................................................................................ 3
2.1 Naming Rules.............................................................................................................. 3
2.2 Functional Characteristics........................................................................................... 3
3 Technical parameter ............................................................................................................... 4
3.1 Electrical performance................................................................................................ 4
3.2 Work environment...................................................................................................... 4
4 Dimension and installing description ..................................................................................... 5
4.1 Dimension (Unit: mm)................................................................................................. 5
4.2 Interfaces of Auxiliary power supply, Communication and Pulse............................... 7
4.3 Interfaces of DI and DO............................................................................................... 7
4.4 Interfaces of Temperature .......................................................................................... 7
4.5 Interfaces of Hall current sensor................................................................................. 8
4.6 Instruction of wiring.................................................................................................... 8
5 Main functions and features................................................................................................. 10
5.1 Measurement............................................................................................................ 10
5.2 Metering ................................................................................................................... 10
5.3 Demand..................................................................................................................... 11
5.4 Historical data ........................................................................................................... 11
5.5 Digital input/ output................................................................................................. 11
5.6 Wireless Communication Function........................................................................... 11
6 Communication description ................................................................................................. 11
6.1 Protocol..................................................................................................................... 11
6.2 MODBUS ................................................................................................................... 11
6.3 Settings of Alarm....................................................................................................... 16
6.4 Historical Data Memory ............................................................................................ 18
6.5 Record of extreme value and occurrence time......................................................... 19
7 Common troubleshooting .................................................................................................... 22
7.1 RS485 networking communication failure................................................................ 22
7.2 Wireless communication failure of instrumentation................................................ 22
1 Overview
ADW350 Wireless Metering Meter is mainly used to metering three phase active
energy on low voltage network. The product boasts of advantages including compact size,
high precision, rich features. According to different requirements, there are many
communications functions like RS485 communication, NB, 4G, adding the new current
sampling mode using external transformer. It can be flexibly installed in the distribution
box to achieve sub-item electric energy metering, operation and maintenance supervision
or power monitoring requirements for different regions and different loads.
2 Product model and specification
2.1 Naming Rules
ADW350
Wireless measuring module
Empty:Built-in current transformer; W:External open type current transformer
A:AC; D:DC
None; NB:NB-IOT; 4G: 4G
K:3DO
C:RS485
T:Two-way temperature
- /
2.2 Functional Characteristics
Chart 1 Functions of ADW350
Functions Description
Display mode LED
Energy metering
Active kWh (positive and negative)，quadrant reactive
power energy
Electrical measurement U、I、 P、Q、S、PF、F
Harmonic function THDv、Harmonic on 2nd-31st
Pulse output Active pulse output
Three-phase unbalance degree Voltage unbalance,current unbalance
Temperature measurement Two way temperature（Alternate configuration:T）
DI/DO 3DO（Alternate configuration:K）
External current transformer
External open type current transformer
（Alternate configuration:W）
Electrical parameter
Undervoltage, undercurrent, overcurrent, underload,
etc
Communication
Infrared communication
RS485（Alternate configuration:C）
NB-IOT（Alternate configuration:NB）
4G（Alternate configuration:4G）
3 Technical parameter
3.1 Electrical performance
Chart 2 Electrical performance of ADW350
Voltage input
Rated voltage
AC: 3×57.7/100V，3×220/380V，3×380/660V，3×100V, 3×380V，
3×660V;
DC: 48V
Reference
frequency
AC: 50Hz
Consumption <0.5VA (Each phase)
Current input
Input current
AC: 3×20(100)A
DC: 50A，100A
Consumption <1VA (Each phase)
Auxiliary power
Power Supply
AC: 85~265V
DC: 48V±20%
Power consumption <5W
Measurement
performance
Electrical parameter Class 0.5
Active energy
accuracy
Class 1
Temperature Range -40℃~100℃
Temperature
accuracy
±2℃
DO Contact Rating 5A，AC250V/DC30V
Pulse
Width of pulse 80±20ms
Pulse constant AC：400imp/kWh DC：1600imp/kWh
Communication
Wireless 2G；NB；4G
Infrared
communication
The constant baud rate is 1200
Interface RS485(A、B)
Connection mode Shielded twisted pair conductors
Protocol MODBUS-RTU
3.2 Work environment
Chart 3 Work environment
Temperature range
Operating temperature -20℃~55℃
Storage temperature -40℃~70℃
Humidity ≤95% (No condensation)
Altitude <2000m
4 Dimension and installing description
4.1 Dimension (Unit: mm)
Figure 1 Rendering of ADW350
Figure 2 Dimension of ADW350
Figure 3 Dimension of transformer (ADW350WA 20(100)A)
Figure 4 Dimension of Hall current sensor AHKC-BS (ADW350WD)
Figure 5 Dimension of K-Type
4.2 Interfaces of Auxiliary power supply, Communication and Pulse
Auxiliary power supply Interface Communication Interface Pulse Interface
4.3 Interfaces of DI and DO
The digital output is realized by relay for remote control and alarm output.
The digital input is realized by digital signal input. The meter has a built-in +12V
working power supply so that it does not require external power supply. The meter collects
the external break-make information with digital input module and displays it locally. The
digital input not only collects and displays the local break-time information but also
provides the remote transmission, i.e. remote communication, with RS485.
Digital output
4.4 Interfaces of Temperature
Temperature input
4.5 Interfaces of Hall current sensor
Auxiliary Power
4.6 Instruction of wiring
There are four modes of connection like 3-phase 4-wire (current connected via CT),
3-phase 3-wire (current connected via CT), 3-phase 4-wire (current connected via PT and
CT) and 3-phase -wire (current connected via PT and CT).
4.6.1 ADW350WA
3-phase 4-wire:
3-phase 3-wire:
4.6.2 ADW350WD
Three single-phase DC can be connected.
Connection method of Hall current sensor and auxiliary power terminal:
Loop 1st:
Loop 2nd:
Loop 3rd:
5 Main functions and features
5.1 Measurement
Measure all electrical parameters, including voltage U, current I, active power P,
reactive power Q, apparent power S, power factor PF, Voltage imbalance, Current
imbalance, frequency, 31st harmonic content and total harmonic content . The measured
voltage U keeps one decimal place, the measured frequency F keeps two decimal places,
the measured current I keeps three decimal places and the measured power P keeps four
decimal places. Voltage imbalance and Current imbalance keeps four decimal places.
Example: U = 220.1V, f = 49.98HZ, I = 1.999A, P = 0.2199KW, △=0.00%
Supporting 4-way temperature measurement，range：-40～99℃，accuracy：±2℃
Supporting aftercurrent measurement，The initial range：0～1000mA，Range multiples
can be set（1～60）.
5.2 Metering
It can measure the current combined active power, positive active power, reverse
active power, inductive reactive power, capacitive reactive power, as seen in the electric
power.
5.3 Demand
Demand-related concepts are listed as follows:
Demand Average power measured during the demand period
Max. demand Maximum amount of demand during a specified period of time
Sliding
window time
A recurrence method to measure the demand from any time point during a period shorter than the
demand period. The demand measured by this means is called sliding demand. The recurrence time is
sliding window time.
Demand
period
Time interval when the same average power is measured continuously, also known as window time
Measure eight maximum demands, i.e. A/B/C three-phase current ,positive active,
negative active, inductive reactive , capacitive reactive and apparent power demands and
the time of maximum demand.
5.4 Historical data
Record the historical data on electricity consumption covering previous 12 months
(including four quadrant and multi-rate tariff).
5.5 Digital input/ output
There are three -way Digital output. The Digital output is realized by relay for remote
control and alarm output. i.e. remote communication, with RS485.
5.6 Wireless Communication Function
The ADW350 supports NB and 4G communications. Specific agreements on NB and
4G communications can be obtained by contacting relevant personnel of our company.
6 Communication description
6.1 Protocol
The meters adapt Modbus protocol. Please refer to the relevant standards for more
information.
6.2 MODBUS
MODBUS-RTU protocol has 03H and 10H command to read and write registers
respectively. The following chart is registers’ address list:
Start Address
（Hexadecimal）
Variable Length R/W Notes
0000H Address 2 R/W 1～247
0001H Baud rate 2 R/W
1：1200bps
2：3400bps
3：4800bps
4：9600bps
0002H~0003H Reserved
0004H
High byte: parity mode, low
byte: stop Bit
2 R/W
High byte: 0-none, 1-even, 2-odd;
low byte: 0- 1 stop Bit, 1- 2 stop
Bit
0005H Reserved
0006H Pulse constant
0007H Backlight Time
0008H Code
0009H~000CH Reserved
000DH Current specification
000EH PT
000FH CT
0010H Reserved
0011H~0013H Time, date (second, minute, hour, day, month, year)
0014H Voltage of A phase 2 R
Int
Keep 1 decimal places
(The real value is the showed
value divide 10.The following
data all in this rule.)
0015H Voltage of B phase 2 R
0016H Voltage of C phase 2 R
0017H Voltage between A-B 2 R
0018H Voltage between B-C 2 R
0019H Voltage between C-A 2 R
001AH Electricity of A phase 2 R
Int
unit A
Keep 2 decimal places
001BH Electricity of B phase 2 R
001CH Electricity of C phase 2 R
001DH
Vector sum of 3-phase
current
2 R
001EH Active power of A phase 4 R
Int
unit kW
Keep 3 decimal places
0020H Active power of B phase 4 R
0022H Active power of C phase 4 R
0024H Total active power 4 R
0026H Reactive power of A phase 4 R
Int
unit kVar
Keep 3 decimal places
0028H Reactive power of B phase 4 R
002AH Reactive power of C phase 4 R
002CH Total reactive power 4 R
002EH Apparent power of A phase 4 R
Int
unit kVA
Keep 3 decimal places
0030H Apparent power of B phase 4 R
0032H Apparent power of C phase 4 R
0034H Total apparent power 4 R
0036H Power factor of A phase 2 R
Int
Keep 3 decimal places
0037H Power factor of B phase 2 R
0038H Power factor of C phase 2 R
0039H Total power factor
2
R
003AH Reserved
003BH Frequency of power
2
R
Int
Keep 2 decimal places
003CH Total energy consumption
4
R
Int
unit kWh
Keep 2 decimal places
003EH
Forward active energy
consumption
4
R
0040H
Reversing active energy
consumption
4
R
0042H
Forward reactive energy
consumption
4
R Int
unit kVarh
0044H Keep 2 decimal places
Reversing reactive energy
consumption
4
R
0046H
Total energy consumption on
A phase
4
R
Int
unit kWh
Keep 2 decimal places
0048H
Forward active energy
consumption on A phase
4
R
004AH
Reversing active energy
consumption on A phase
4
R
004CH
Forward reactive energy
consumption on A phase
4
R Int
unit kVarh
004EH Keep 2 decimal places
Reversing reactive energy
consumption on A phase
4
R
0050H
Total energy consumption on
B phase
4
R
Int
unit kWh
Keep 2 decimal places
0052H
Forward active energy
consumption on B phase
4
R
0054H
Reversing active energy
consumption on B phase
4
R
0056H
Forward reactive energy
consumption on B phase
4
R Int
unit kVarh
0058H Keep 2 decimal places
Reversing reactive energy
consumption on B phase
4
R
005AH
Total energy consumption on
C phase
4
R
Int
unit kWh
Keep 2 decimal places
005CH
Forward active energy
consumption on C phase
4
R
005EH
Reversing active energy
consumption on C phase
4
R
0060H
Forward reactive energy
consumption on C phase
4
R Int
unit kVarh
0062H Keep 2 decimal places
Reversing reactive energy
consumption on C phase
4
R
0064H Maximum forward active
4
R Int
demand in current month unit KW
Keep 3 decimal places
0066H~0067H Occur time 4 R Minute, hour, day, month
0068H
Maximum reversing active
demand in current month
4 R
Int
unit kVar
Keep 3 decimal places
006AH~006BH Occur time 4 R Minute, hour, day, month
006CH
Maximum forward reactive
demand in current month
4 R
Int
unit kVar
Keep 3 decimal places
006EH~006FH Occur time 4 R Minute, hour, day, month
0070H
Maximum reversing reactive
demand in current month
4 R
Int
unit kVar
Keep 3 decimal places
0072H~0073H Occur time 4 R Minute, hour, day, month
0074H THDUa 2 R
Total distortion rate of voltage
and current on each phase
Int
Keep 2 decimal places
0075H THDUb 2 R
0076H THDUc 2 R
0077H THDIa 2 R
0078H THDIb 2 R
0079H THDIc 2 R
007AH
THUa(Harmonic on
2nd-31st)
2×30 R
Harmonic voltage on 2nd-31st
Int
Keep 2 decimal places
0098H
THUa(Harmonic on
2nd-31st)
2×30 R
00B6H
THUb(Harmonic on
2nd-31st)
2×30 R
00D4H
THUc(Harmonic on
2nd-31st)
2×30 R
Harmonic current on 2nd-31st
Int
Keep 2 decimal places
00F2H
THIa(Harmonic on
2nd-31st)
2×30 R
0110H
THIb(Harmonic on
2nd-31st)
2×30 R
012EH
Fundamental voltage on A
phase
2 R
Int
unit V
Keep 1 decimal places
012FH
Fundamental voltage on B
phase
2 R
0130H
Fundamental voltage on C
phase
2 R
0131H
Harmonic voltage on A
phase
2 R
0132H
Harmonic voltage on B
phase
2 R
0133H Harmonic voltage on C 2 R
phase
0134H
Fundamental current on A
phase
2
R
Int
unit A
Keep 2 decimal places
0135H
Fundamental current on B
phase
2
R
0136H
Fundamental current on C
phase
2
R
0137H
Harmonic current on A
phase
2
R
0138H
Harmonic current on B
phase
2
R
0139H
Harmonic current on C
phase
2
R
013AH
Fundamental active power
on A phase
4
R
Int
unit kW
Keep 3 decimal places
013CH
Fundamental active power
on B phase
4
R
013EH
Fundamental active power
on C phase
4
R
0140H Fundamental active power
4
R
0142H
Fundamental reactive power
on A phase
4
R
Int
unit kVar
Keep 3 decimal places
0144H
Fundamental reactive power
on B phase
4
R
0146H
Fundamental reactive power
on C phase
4
R
0148H Fundamental reactive power
4
R
014AH
Harmonic active power on A
phase
4
R
Int
unit kW
Keep 3 decimal places
014CH
Harmonic active power on B
phase
4
R
014EH
Harmonic active power on C
phase
4
R
0150H Harmonic active power
4
R
0152H
Harmonic reactive power on
A phase
4
R
Int
unit kVar
Keep 3 decimal places
0154H
Harmonic reactive power on
B phase
4
R
0156H
Harmonic reactive power on
C phase
4
R
0158H Harmonic reactive power
4
R
015AH Current forward active
demand
4
R
Int
unit kW
015CH Current reversing active
demand
4 R
Keep 3 decimal places
015EH Current forward reactive
demand
4 R Int
unit kVar
Keep 3 decimal places 0160H Current reversing reactive
demand
4 R
0162H Voltage imbalance 2 R Int
unit 0.01% 0163H Current imbalance 2 R
0164H Temperature on A phase 2 R
Int
unit 0.1℃
0165H Temperature on B phase 2 R
0166H Temperature on C phase 2 R
0167H~01BDH Reserved
01BFH wireless signal strength 2 R Int
01C1H Reserved
01C2H DO1 2 R/W
Int
Bit0 effective
01C3H DO2 2 R/W
Int
Bit0 effective
01E1H DO3 2 R/W
Int
Bit0 effective
6.3 Settings of Alarm
Start Address
（Hexadecimal）
Variable Length R/W Notes
01DOH Alarm permission bits 2 R/W
Bit0: overvoltage alarm
permission bits
Bit1: undervoltage alarm
permission bits
Bit2: overcurrent alarm
permission bits
Bit3: undercurrent alarm
permission bits
Bit4: overpower alarm
permission bits
Bit5: underpower alarm
permission bits
01D1H
overvoltage alarm
threshold
2 R/W
Int
unit 0.1V
01D2H
overvoltage alarm
time-delay
2 R/W
Int
unit 0.01S
01D3H undervoltage alarm 2 R/W Int
threshold unit 0.1V
01D4H
undervoltage alarm
time-delay
2 R/W
Int
unit 0.01S
01D5H
overcurrent alarm
threshold
2 R/W
Int
unit 0.01A
01D6H
Overcurrent alarm
time-delay
2 R/W
Int
unit 0.01S
01D7H
undercurrent alarm
threshold
2 R/W
Int
unit 0.01A
01D8H
undercurrent alarm
time-delay
2 R/W
Int
unit 0.01S
01D9H
overpower alarm
threshold
2 R/W
Int
unit 0.001kw
01DAH
overpower alarm
time-delay
2 R/W
Int
unit 0.01S
01DBH
underpower alarm
threshold
2 R/W
Int
unit 0.001kw
01DCH
underpower alarm
time-delay
2 R/W
Int
unit 0.01S
01DDH~01E0H Reserved
01E2H DO3 Output mode 2 R/W
0:Electrical level
1:Purse
01E3H
DO3 Related content
2 R/W
0:DO
1: Total failure
01E4H
DO3 Output pulse
width
2 R/W
0:None
1:1S
2:2S
3:3S
4:4S
5:5S
01E5H DO1 Output mode 2 R/W
0:Electrical level
1:Purse
01E6H
DO1 Related content
2 R/W
0:DO
1: Total failure
01E7H
DO1 Output pulse
width
2 R/W
0:None
1:1S
2:2S
3:3S
4:4S
5:5S
01E8H DO2 Output mode 2 R/W
0: Electrical level
1:Purse
01E9H DO2 Related content 2 R/W
0:DO
1:Total failure
6.4 Historical Data Memory
Start address
(high byte)
Data type
Start address
(low byte)
Data type
48-53H Last 1 month-last 12 months 00H Record date and time
03H History total active energy
05H History total forward active energy
07H History total reversing active energy
09H History total forward reactive energy
0BH History total reversing reactive energy
0DH Total active energy on A phase
0FH Total forward active energy on A phase
11H Total reversing active energy on A phase
13H Total forward reactive energy on A phase
15H Total reversing reactive energy on A phase
17H Total active energy on B phase
19H Total forward active energy on B phase
1BH Total reversing active energy on B phase
1DH Total forward reactive energy on B phase
1FH Total reversing reactive energy on B phase
21H Total active energy on C phase
23H Total forward active energy on C phase
25H Total reversing active energy on C phase
27H Total forward reactive energy on C phase
29H Total reversing reactive energy on C phase
2BH Current spike electric energy
2DH Current peak electric energy
2FH Current flat electric energy
31H Current valley electric energy
33H Current forward active spike electric energy
35H Current forward active peak electric energy
37H Current forward active flat electric energy
39H Current forward active valley electric energy
01EAH
DO2 Output pulse
width
2 R/W
0:None
1:1S
2:2S
3:3S
4:4S
5:5S
3BH Current reversing active spike electric energy
3DH Current reversing Active peak electric energy
3FH Current reversing active flat electric energy
41H Current reversing Active valley electric energy
43H Current forward reactive spike electric energy
45H Current forward reactive spike electric energy
47H Current forward reactive flat electric energy
49H Current forward reactive valley electric energy
4BH Current reversing reactive spike electric energy
4DH Current reversing reactive peak electric energy
4FH Current reversing reactive flat electric energy
51H Current reversing reactive valley electric energy
6.5 Record of extreme value and occurrence time
1） Maximum records:
Starting address of
interval (high byte)
Type of historical data
Offset address of
interval (low byte)）
Data type
04
Extremum of the month
and Occurrence time
00
Voltage of A phase maximum value
and occurrence time
05
Extremum of last 1 month
and Occurrence time
03
Voltage of B phase maximum value
and occurrence time
06
Extremum of last 2 month
and Occurrence time
06
Voltage of C phase maximum value
and occurrence time
07
Extremum of last 3 month
and Occurrence time
09
Voltage between A-B maximum value
and occurrence time
0C
Voltage between A-B maximum value
and occurrence time
0F
Voltage between A-B maximum value
and occurrence time
12
Electricity of A phase maximum value
and occurrence time
15
Electricity of B phase maximum value
and occurrence time
18
Electricity of C phase maximum value
and occurrence time
1B
Three phase current vector sum
maximum value and occurrence time
1E
Active power of A phase maximum
value and occurrence time
22
Active power of B phase maximum
value and occurrence time
26
Active power of C phase maximum
value and occurrence time
2A
Total active power maximum value
and occurrence time
2E
Reactive power of A phase maximum
value and occurrence time
32
Reactive power of B phase maximum
value and occurrence time
36
Reactive power of C phase maximum
value and occurrence time
3A
Total reactive power maximum value
and occurrence time
3E
Apparent power of A phase maximum
value and occurrence time
42
Apparent power of B phase maximum
value and occurrence time
46
Apparent power of C phase maximum
value and occurrence time
4A
Total apparent power maximum value
and occurrence time
2） Minimum record:
Starting address of
interval (high byte)
Type of historical data
Offset address of
interval (low byte)）
Data type
04
Extremum of the month
and Occurrence time
4E
Voltage of A phase Minimum Value
and occurrence time
05
Extremum of last 1 month
and Occurrence time
51
Voltage of B phase Minimum Value
and occurrence time
06
Extremum of last 2 month
and Occurrence time
54
Voltage of C phase Minimum Value
and occurrence time
07
Extremum of last 3 month
and Occurrence time
57
Voltage between A-B Minimum Value
and occurrence time
5A
Voltage between B-C Minimum value
and occurrence time
5D Voltage between C-A Minimum value
and occurrence time
60
Electricity of A phase Minimum value
and occurrence time
63
Electricity of B phase Minimum value
and occurrence time
66
Electricity of C phase Minimum value
and occurrence time
69
Three phase current vector sum
Minimum value and occurrence time
6C
Active power of A phase Minimum
value and occurrence time
70
Active power of B phase Minimum
value and occurrence time
74
Active power of C phase Minimum
value and occurrence time
78
Total active power Minimum value and
occurrence time
7C
Reactive power of A phase Minimum
value and occurrence time
80
Reactive power of B phase Minimum
value and occurrence time
84
Reactive power of C phase Minimum
value and occurrence time
88
Total reactive power Minimum value
and occurrence time
8C
Apparent power of A phase Minimum
value and occurrence time
90
Apparent power of B phase Minimum
value and occurrence time
94
Apparent power of C phase Minimum
value and occurrence time
98
Total apparent power Minimum value
and occurrence time
Note：The record of every extreme value and occurrence time is 6 bits, and the data
configuration can be refered as below:
ADDRH
ADDRL
Event names Data type Note
0400H
Maximum voltage of
A phase and
The data of Maximum
voltage of A phase
data and decimal place refer to address
table 6.2
0401H
occurrence time Occurrence time of
minutes and hours
high byte : minutes
0402H
Occurrence time of Days
and months
high byte : Days
7 Common troubleshooting
7.1 RS485 networking communication failure
Suggestion: Please first confirm whether the RS485 wiring is loose, AB connection
reverse and other problems, and then check the table through the button to see if the
general selection parameters, such as address, baud rate, check digit, etc., are set correctly.
7.2 Wireless communication failure of instrumentation
Suggestion: Please connect RS485 interface on the meter and USB convert to 485
serial port to read the parameters, and confirm whether the parameters are the same as the
upper terminal wireless configuration (channel and spread spectrum factor). If different,
please modify the meter’s wireless parameters and retest the master terminal after the same,
and if the same, it may be the meter and master terminal are in a relative long distance. It is
too far to communicate or the scene is seriously disturbed. We can try to use the external
antenna at the same time, or consider the newly added wireless master terminals, and then
test it.
Headquarters: Acrel Co., LTD.
Address: No.253 Yulv Road Jiading District, Shanghai，China
TEL.:0086-21-69158338 0086-21-69156052 0086-21-59156392
0086-21-69156971
Fax: 0086-21-69158303
Web-site: www.acrel-electric.com
E-mail: ACREL008@vip.163.com
Postcode: 201801
Manufacturer: Jiangsu Acrel Electrical Manufacturing Co., LTD.
Address: No.5 Dongmeng Road,Dongmeng industrial Park, Nanzha
Street,Jiangyin City,Jiangsu Province,China
TEL./Fax: 0086-510-86179970
Web-site: www.jsacrel.com
Postcode: 214405
E-mail: JY-ACREL001@vip.163.com
