User's Manual

EV/DV100 Series Power Meter
User’s Manual
Your Power and Automation Partner
CopyRight © 2007 V2.0
Accuenergy Technology Co., Ltd
EV/DV Series
This manual may not be reproduced in whole or in part by mimeograph or any other means, without permission of Accuenergy.
The information contained in this document is believed to be accurate at the time of publication,
however, Accuenergy assumes no responsibility for any errors which may appear here and reserves
the right to make changes without notice. Please ask the local represent for latest product specifications before ordering.
Please read this manual carefully before doing installation, operation and maintenance of This
EV/DV Series
product. Following symbols are used in this user's manual and on meter to alert the dangerous or to
prompt in the operating or set process.
Dangerous symbol, Failure to observe the information may result in injury or death.
Alert symbol, Alert the potential dangerous.
Observe the information after the symbol to avoid possible injury or death.
Dangerous
Near dangerous position, Failure to observe the information may result in injury or
death.
Note Symbol, Observe it and avoid result in meter damage or human injury or death.
Instrument should be well grounded and power off before maintenance. Installation and maintenance of the meter should only be performed by qualified, competent personnel that have appropriate
training and experience with high voltage and current device.
II
EV/DV Series
Content
Content…………………………………………………………………………………………………………Ⅲ
Chapter 1 Introduction………………………………………………………………………………………1
1.1 Description of EV/DV………………………………………………………………………………1
1.2 The Application Area of EV/DV……………………………………………………………………2
1.3 EV/DV Series………………………………………………………………………………………3
Chapter 2 Installation…………………………………………………………………………………………6
2.1 Appearance and Dimensions………………………………………………………………………6
2.2 Installation Method…………………………………………………………………………………8
2.3 Wiring………………………………………………………………………………………………11
Chapter 3 Operation and Setup……………………………………………………………………………20
3.1 Display and Keys…………………………………………………………………………………20
3.2 Metering Data Reading……………………………………………………………………………22
3.3 Meter parameter setting…………………………………………………………………………25
III
Chapter 4 Communication…………………………………………………………………………………33
EV/DV Series
4.1 Introduction of Modbus Protocol…………………………………………………………………33
4.2 Format of Communication…………………………………………………………………………37
4.3 Address Table………………………………………………………………………………………44
Appendix………………………………………………………………………………………………………49
Appendix A Technical Data and Specification………………………………………………………49
Appendix B Ordering…………………………………………………………………………………54
IV
EV/DV Series
Chapter 1 Introduction
1.1 Description of EV/DV
Powerful and Economical
EV/DV series power meter is design for single phase electrical value measurement by using of
latest microprocessor and digital signal process technology. It can True-RMS measure Voltage, Current, Power, Reactive Power, Power Factor, Frequency and Energy. The meter can be well used in
high harmonic environment especially in middle and low voltage power system, electric apparatus,
power system automation and factory automation. All the measuring electrical value is available via
digital RS485 communication port running Modbus TM Protocol. The meter also got some I/O functions that made the metering, monitoring, remote controlling and Analog output in one unit.
Small Size & Easy install
EV/DV series was designed in compact size DIN96*48 and reduced depth 60mm. It suitable for
small cabin install in switch gear. Easy install on panel by using clips.
Easy to Use
EV/DV Series
Large character LCD with blue back light made the display easy to read even under the dark
light. All the Value reading and parameter setting can be access by using 4 panel keys or communication port. The parameters are protected in EEPROM, which will maintain its content after the meter
is power off.
High Reliability and Safety
Multi-isolation and immunity methods were adopted in the EV/DV design according to the industry standards. The meter can be installed in hazard industry area. Also the meter was tested under
IEC standards and EMC standards. The meter house was designed by using glass polymer which is
durable and antifire.
1.2 Application Area
EV/DV series meter can be used to replace analog meter, panel meter, transducer and small
RTU in power distribution or power automation system. As it adopted true-RMS measuring method,
the EV/ DV series are competent for measuring voltage and current in high distortion nonlinear load
system, such as VVVF, Electric Ballast, Computer etc.
Intelligent Electric Switch Gear
Industry Automation
Building Automation
Energy Manage System
Industry Apparatus
EV/DV Series
Power Distribution Automation
1.3 EV/DV Series
EV/DV series power meter is used mainly in single phase or balance three phase system.
EV series meter has measuring, communication and I/O functions. EV16x is single measuring
function meter with communication port while EV18x and EV190 is multi-function meter with communication port. For detail please refer to Table1.1.
DV series meter has measuring and AO functions. DV10x is single measuring function meter
while DV12X and DV130 are multi-function meters. For detail please refer to Table1.2.
EV/DV Series
Item
Metering
Voltage V
EV161
EV162 EV163 EV164
EV165
EV166 EV167
●
●
Current I
Power P
EV182 EV184 EV188
●
●
●
●
●
●
●
●
Reactive Power Q
●
●
●
●
Apparent Power S
●
Power Factor PF
●
Frequency Hz
●
I/O
Option
Digital Input DI
□
□
□
□
□
□
□
□
Relay Output RO
□
□
□
□
□
□
□
AO
Option
4~20mA or 0~1m or
0~5V
□
□
□
□
□
□
Communication
RS485
Modbus Protocol
●
●
●
●
●
●
●
Blank NA
Table1.1 EV100 Series Power Meter
●
Energy Ep
□ Option
●
●
Energy
● Function
EV190
●
●
●
●
□
□
□
□
□
□
□
□
□
□
□
●
●
●
●
Voltage V
DV101
DV102 DV103 DV104 DV105
DV106
DV107 DV122 DV124 DV128
●
●
Current I
Power P
Reactive Power Q
●
●
●
●
●
●
●
●
●
●
●
Apparent Power S
●
Power Factor PF
●
Frequency Hz
Energy
Energy Ep
AO
Option
4~20mA or 0~1m or
0~5V
EV130
●
●
EV/DV Series
Item
Metering
●
●
●
●
●
□
□
□
□
□
□
□
□
●
●
□
□
Table 1.2 DV100 Series Power Meter
EV/DV Series
Chapter 2 Installation
2.1 Appearance and Dimensions
2.1.1 Appearance
②
y
Accuenerg
⑧
③
V/A
P
E
④
①
⑤
⑦
⑥
Fig 2.1 EV190 appearance
Description
Meter House is made of High Strength anti fire glass-polymer
Front Part of the Meter
LCD Display Window
Used to change display and setting the parameters
Used to protect key Mis-press
Used fasten the meter on the panel
EV/DV Series
Part Name
① House
② Front Panel
③ Display Window
④ Key
⑤ Key Door
⑥ Clip
⑦ Input Terminal
⑧ Auxiliary Terminal
Power supply, Voltage and Current Input Terminal
Digital Input, Relay Output, Analog Output and Communication Terminal
Table 2.1 Part Name of Meter
48.00
48.00
2.1.2 Dimension(mm)
60.00
96.00
71.00
Fig 2.2 Dimension
2.2 Installation
EV/DV Series
Environment
Before installation, please make sure that the environment should
Note
The environment tem-
satisfy the following conditions.
1. Temperature
perature, humidity and
position should be in
EV/DV meter’s working temperature range are from -20℃ to 70℃. If
the meter’s specifica-
the meter is used beyond this range, it will result in unnormal performance
tion range.
or even permanent damage of the meter.
EV/DV meter’s storage range is from -40℃ to 85℃.
2. Humidity
EV/DV meter’s working humidity is from 0 to 95% non-condencing.
3. Position
EV/DV meter should be installed in dry and dust free environment and avoid heat, radiation and
high electrical noise source.
Installation Steps
Normally, the meter was installed on the panel of switch board.
1. Firstly, cut a square hole on the panel of the switch gear. The cutting size is as fig 2.3.
Panel
0.5
44± 0.0
EV/DV Series
cut
90±
0.5
0.0
Fig 2.3 Panel Cutting
2. Secondly, remove the clips from the meter and insert the meter into the square hole from the
front side.
Panel
ener
gy
EV
19
0
Accu
Fig 2.4 Put the meter into square hole
EV/DV Series
3. Finally, put clips back to the meter from the backside and push the clip tightly so that the meter
is fixed on the panel.
Fig 2.5 Use the clips to fasten the meter on the panel
10
2.3 Wiring
EV/DV Series
Terminal Strips
There are 2 terminal strips on the back of EV/DV meter.
DIGITAL INPUTS
AO
RELAY OUTPUTS
RS-485
DI1+
DI2+
DI3+
DI4+
DIC
AO+
AO-
R11
R12
R21
R22
A
B
S
9
10
11
12
13
14
15
16
17
18
19
20
21
22
Up terminal Strip: Communication and I/O
POWER
L
1
N
2
G
3
NC
4
VOLTAGE
INPUT
VL
VN
5
6
CURRENT
INPUT
I2
8
I1
7
Low terminal Strip: Power, Voltage and Current Input
Note: NC means No Connection. Certain terminals may not exist if some type of meter is selected.
Fig 2.6 Terminal Strips
11
EV/DV Series
DANGEROUS
Onl y the qua l i f i e d
personnel could do the
wire connection work.
Make sure the power
supply is cut off and all
the wires are electroless.
Failure to observe it may
result in severe injury.
Safety Earth Connection
Before doing the meter wiring connection, please make sure that
the switch Panel has a safety Earth system. Connect the meter safety
earth terminal to the switch gear safety earth system. The following
safety earth symbol is used in the user ’s manual.
Auxiliary Power
The auxiliary power supply of the Acuvim meter is 85~264Vac
Note
Make sure the voltage
of power supply is the
same as what the meter
needed for its auxiliary
power.
(50/60Hz) or 100~280Vdc. Typical power consumption of the meter is
less than 2W. A regulator or a UPS should be used when the power
supply undulates too much. The terminals for the auxiliary power supply are 1, 2 and 3 (L, N, G). A fuse (typical 1A/250Vac) should be used
in auxiliary power supply loop. No.3 terminal must be connected to the
safety earth system of switchgear. An isolated transformer or EMI filter
should be used in the auxiliary power supply loop if there is power quality problem in the power supply. Typical Wiring of Auxiliary Power Supply is as Fig 2.7.
12
Ground
1
L
2
N
3
G
EV190
The Best choice the wire of power supply
could be AWG16~22 or 0.6~1.5mm2.
Fig 2.7 Wiring of Power Supply
Voltage Input
Two Voltage Input options of EV/DV meter are 100Vac and 400Vac.
Note
The secondary of PT
can not be shorted
, otherwise it may
cause the severe
damage of the instrument .
100Vac option is suitable for low voltage system that less than 120Vac
or high or medium voltage system that the secondary of PT is 100Vac.
400Vac option is suitable for low voltage system that less than 480Vac.
The voltage input could be directly connected to the terminal of EV/DV
without the use of PT.
A fuse (typical 1A/250Vac) should be used in voltage input loop.
The wire number of voltage input could be AWG16~22 or 0.6~1.5mm2.
13
EV/DV Series
1A FUSE
85~264Vac
Power Supply
Current Input
EV/DV Series
Note
The CT loop should not be open
circuit in any simultaneously when
the power is on. There should not
be any fuse or switch in the CT loop
and one end of the CT loop should
be connected to the ground.
In a practical engineering application, CTs should be
installed in the loop of measuring. Normally the secondary
of CT is 5A. 1A is possible in the ordering option. A CT of
accuracy over 0.5% (rating over 3VA) is recommended and it
will influence the measuring accuracy. The wire between CT
and meter should be as shorter as possible. The length of
the wire may increase the error of the measurement.
The wire number of current input could be AWG15~16 or 1.5~2.5mm2.
Wiring of Current Input
Before Wiring, Please Make sure the voltage and current input of the meter corresponding to
power system measured.
Single Phase Current Input Wiring Diagram. Fig 2.8 (For EV162, DV102)
Single Phase Voltage Input Wiring Diagram. Fig 2.9 (For EV161, EV166, DV101, DV106)
Single Phase Voltage and Current Input Wiring Diagram. Fig 2.10(For EV163, EV164, EV165,
EV167, EV182, EV184, EV188, EV190)DV103, DV104, DV105, DV107, DV122, DV124, DV128,
DV130).
14
LINE
L N
1A FUSE
7 I1
8 I2
5 VL
DV102
LOAD
6 VN
EV/DV Series
LINE
L N
Terminal
Block
DV101
LOAD
Fig 2.8 Current Input
Fig 2.9 Voltage Input
LINE
L N
1A FUSE
Terminal Block
K
5 VL
6 VN
EV190
7 I1
8 I2
LOAD
Fig 2.10 Current and Voltage Input
12~24Vac
Optal Couple
DI+
+
OUT
DI-
EV100
Fig 2.11 Digital Input
Digital Input
There is 4 Digital Inputs (Option) which outside power supply is needed in EV Series. The Input
terminals are DI1+(9), DI2+(10), DI3+(11), DI4+(12), DIC(13), as in Fig 2.11.
15
The outside power supply used for Digital Input is from 16Vdc to 30Vdc. If the switch is far from
EV/DV Series
the meter, the voltage of power supply could be higher. The maximum current in the circuit should
not over 10mA. The wire number of Digital input could be AWG16~22 or 0.6~1.5mm2.
Relay Output
There are two additional relay output for
option in the meter. The terminal are R11,
R12 (16, 17) and R21, R22 (18, 19). These
two relay output are used to remote control
16
EV190
R11
Power
Supply
Mediate
Relay
+
R12
Control
Output
17
electric switch in power system. Relay type
is mechanical Form A contact with 3A/250V
Fig 2.12 Relay Output
or 3A/30Vdc. A mediate relay is recommended in the output circuit as in Fig 2.12.
There are two relay output modes for selection, one is latching, and the other is momentary. For
the latching mode, the relay can be used to output two statues on or off. For the momentary mode,
the output of the relay changes from off to on for a period of time Ton and than goes off. Ton can be
setting from 50- 3000ms.
The wire of relay output should be chose between AWG22 (0.5mm2)~AWG16 (1.5mm2).
16
Alarm Output
output or LCD back-light flashing, The setting of alarm is as following.
1. Set the relay output mode as alarm. (DO?_MODE=2)
2. Assign metering parameter to alarm. (Refer Table 2.2)
3. Set alarm time limit. (Min time: 1s, Range: 0~255s)
4. Set alarm value limit.
5. Sign of the inequation. (0: parameter<Value limit, 1: parameter>Value limit)
6. Relate to relays. (0: RO1, 1: RO2)
For register of setting parameters please refer to 4.3 of this manual.
Serial number versus alarming parameter is listed in Table 2.2. Number 0 means no parameter
is assigned to alarm.
Number
Parameter
0
— —
1
Hz
2
U
3
I
4
P
5
Q
6
S
7
PF
Table 2.2 Serial number versus alarming parameter
17
EV/DV Series
There is an alarm function in EV100 series meter. The alarm will be triggered when a metering
parameter is over the limit value and over the setting time limit. The alarm can be related to relay
Example:
EV/DV Series
Alarming parameter: I,
Time limit: 15s,
Alarm output relay: RO1,
Rating of CT1 of I: 200A,
Value limit: 180A.
The setting of alarm is as following:
1. Set the relay output mode as alarm. DO?_MODE=2
2. The serial number of I is 3 from Table 2.2.
3. CT1=200, the equation converting between real value and register value is:
Real value=(value in register × CT1 ÷ 5) ÷ 1000
If real value is 180A, the register value is 4500.
4. Time limit is 15s. The register value is 15.
5. The value is high limit, so the sign of in equation is 1 (great than).
The alarm happens when register value>4500.
6. The alarm relating relay is RO1, so the RO select 0.
After finish above setting, the alarm will trigger RO1 and back-light flashing when value of I is
over 180A and last over 15 seconds.
18
Analog Output
Analog Output could be one of the following output, 4~20mA, 0~1mA and 0~5V
VCC
VCC
Vout
Load
+
-
Vout
R1
Load
EV190
R2
Voltage Output Type
+
-
EV190
R
Current Output Type
Fig 2.13 Analog Output Diagram
Output Capability:
4~20mA Max Load Resistance 750Ω
19
EV/DV Series
An analog output (Option) is provided in EV/DV Meter. Any one of the seven parameters could
be selected as Analog output. Refer to Chapter 3.
0~1mA Max Load Resistance 10KΩ
EV/DV Series
0~5V Max Output Current 20mA
Communication
The communication port and protocol of EV/DV meter are RS485 and Modbus-RTU. The terminals of communication are A, B, and S (20, 21, 22). A is differential signal +, B is differential signal and S connected to shield of twisted pair cable. Up to 32 devices can be connected on a RS485 bus.
Use good quality shielded twisted pair cable, AWG22 (0.5mm2) or larger. The overall length of the
RS485 cable connecting all devices can not exceed 1200m (4000ft). EV/DV meter is used as a slave
device of master like PC, PLC, data collector or RTU.
The topology of RS485 net can be line, circle and star.
A few points of recommendation for high quality communication are as follows:
 Good quality shielded twisted pair of cable AWG22 (0.6mm2) or larger is very important.
 The shield of each segment of the RS485 cable must be connected to the ground at one end
only.
 Make sure the right connection of each point.
 Avoid T connection at each point.
 Keep cables away as much as possible from sources of electrical noise.
20
3.1 Display Panel and Keys
There are one display panel and four keys in the front of the meter. All the display segments are
illustrated in fig 3.1.
⑤
②
⑥
①
⑤
③
④
Fig 3.1 All Display Segments
21
EV/DV Series
Chapter 3 Basic Operation and Setup
EV/DV Series
Number
①
Display
Data and Parameters
Description
Display metering data in metering mode.
Display parameters in setting mode.
Indicating Metering data unit. V and KV for Voltage, A for Current,
KW for Power, KVar for Reactive Power, KVA for Apparent Power,
KWH for Energy, PF for Power Factor, Hz for Frequency.
②
Unit Label
③
Load Nature
"
④
⑤
Digital Input
Parameter Label
Indicator No.1 to No.4 switch indicate statues of DI1 to DI4
"SET" label is on when the meter is in the setting mode. One of the
following label is also on. Addr for communication address, bps for
Communication Rate (Bit per Second), pt1 for primary voltage, pt2
for secondary voltage, ct1 for primary current, ct2 for secondary
⑥
Communication state
" : Capacitive Load, "
current and "
When "
" : Inductive Load
" for time of back light；
" is on, it indicates that there is communication infor-
mation between meter and master instrument.
Table 3.1 Display Panel Description
22
There are four delicacy keys labelled as “
“, E, P and V/A. Use these four keys to read me-
All the description in this manual is about EV190 which is a full function single phase power meter. For other EV/DV100 series meters, please refer to the corresponding function or description.
3.2 Meter Data Reading
Normally, EV/DV meter display the metering data, such as voltage, current, power etc. To read
the metering data simply press the keys “P”, “E” and “V/A”.
Press “V/A” key to read voltage, current and frequency.
The first screen: Display Voltage, U=220.3V,
Inductive load, Communication Port Busy,
DI1, DI2, DI3 and DI4 Open.
Press “V/A”, go to the second screen.
Fig 3.2 Voltage Display
23
EV/DV Series
tering data and do parameter setting.
EV/DV Series
The second screen: Display current. As in fig 3.3,
I=498.7A.
Press “V/A”, go to the third screen.
Fig 3.3 Current Display
The third screen: Display frequency. As in Fig 3.4,
F=50.00Hz.
Press “V/A” again, go back to the first screen.
Fig 3.4 Frequency Display
Press P key, display power related metering data.
First screen: Display Power.
In Fig 3.5, P=350.6KW, inductive Load, communication port busy, DI1 DI3 close and DI2 DI3
open.
Fig 3.5 Power Display
24
Press “P”, go to the second screen.
EV/DV Series
The second screen: Display reactive power.
In Fig 3.6, Q=-29.81KW, capacitive load.
Press “P”, go to the third screen.
Fig 3.8 Power Factor Display
The third screen: Apparent Power Display.
In fig 3.7, S=837.1KVA
Press “P”, go to the forth screen.
Fig 3.6 Reactive Power Display
The forth screen: Display Power Factor.
In fig 3.8, PF=-0.999.
Press “P”, go back to the first screen.
Fig 3.7 Apparent Power Display
25
When the value of P, Q and S is great then 9999,
EV/DV Series
the display will change to six digits mode. For
example,
in fig 3.9, P=23564.7 KW.
Fig 3.9 Display Power with Six Digits
Press E, display energy.
In fig 3.10, E=32768.9 Kwh. Energy display
range is from 0 to 999999Kwh. Over 106 Kwh,
energy register will turn to 0.
Fig 3.10 Energy Display
3.3 Parameter Setting
In metering mode, Press “
26
” and V/A to go to the parameter setting mode.
The setting should be
done by the professional personnel after
he has read this user’
s manual and understand the application
situation.
Press “
” to move cursor from left to right. The digit will flashing
when the cursor move to it.
Press E to increase 1 once a time. Press P to decrease 1 once a time.
Press V/A to confirm the former key input and press “
screen. In any screen, press “
” again go to next
” and V/A at the same time to exit the
parameter setting mode.
Before going into the parameter setting, the address of the meter will
display 3 seconds. Then go to the parameter setting mode. There is pass
word input screen to protect the parameter setting mode.
Four digits Access code integer is used between 0000 and 9999. The default access code is
0000. Each time before going to the parameter setting mode, correct access code must be entered.
27
EV/DV Series
Note
EV/DV Series
Asking for access code as in Fig 3.11.
Fig 3.11 Access Code Input
First Screen: Meter’s Communication Address
setting. The address can be any integer between
1 and 254. As in fig 3.12, the communication address is 84. If address changing needed, press “
Fig 3.12 Communication Address Setting
” to move cursor, press P for increasing and
press E for decreasing. After the expected ad-
dress is set, press V/A to go to the next setting screen. Press V/A to go to the next screen if there is
no need to change the address.
Two or more meters should not be set the same address in the same communication line
according to the Modbus-RTU protocol.
28
The second screen: Baud rate setting page.
1 stop bit. Baud rate could be one of the five
value, 1200, 2400, 4800, 9600, 19200bps. In fig
Fig 3.13 Baud Rate Setting
3.13 baud rate is 19200bps. Just press E key to
select baud rate. Press V/A to go to next screen.
Only one baud rate should be selected on the
same communication line.
The third screen: PT primary rating voltage PT1
setting page.
PT1 value is an integer from 100 to 500,000.
The unit is volt.
In fig 3.14, PT1=100000V, Use P, E and keys to
Fig 3.14 PT1 Setting
change PT1 value. Press “
” V/A key for ac-
knowledgment and going to the next setting
page.
29
EV/DV Series
Modbus-RTU 8 data bit, no parity, 1 start bit and
The forth screen: PT secondary rating voltEV/DV Series
age PT2 setting page. PT2 value is an integer
from 100 to 400. The unit is volt. As in fig 3.15,
PT2=400V, press P, E and “
Fig 3.15 PT2 Setting
” to change the
value. Press V/A key for acknowledgment and
going to the next setting page.
Note: If there is no PT on the voltage input
side, the PT1 and PT2 should be the same
and equal to the input rating voltage.
The fifth screen: CT primary rating current
Fig 3.16 CT1 Setting
CT1 setting page CT1 value is an integer from
5 to 9999. The unit is Amp. As in fig 3.16,
CT1=5000A, pressing P, E and “
” keys to
change the value. Press V/A key for acknowledgment and going to the next setting page.
The sixth screen: The defult value of CT2 is 5 A.
Fig 3.17 CT2 Setting
30
If the meter is 1A option, CT2 should be 1A.
The seventh screen: Analog output setting page.
output. The number 0 to 6 is corresponded
to frequency, voltage, current, power, reactive
图3.18 模拟变送对象设定页
power, apparent power and power factor. There
is not this setting page in single function meter.
There are three output modes, 4~20mA, 0~1mA and 0~5V in EV/DV series, which is chosed
when ordering. The relation between the output mode and metering data is as Fig3.19(a), (b), (c).
(mA)
( AO Output )
20
12
4
65
45
Frequecy(Hz)
0
PT1/CT1
Voltage/Current (V/A)
0
-PT1×CT1
PT1×CT1
Power/Reactive Power (W/Var)
PT1×CT1
Apparent Power (VA)
0.5(C)
1.0
0.5(L)
Power Factor
(Metering Data)
Fig 3.19(a) Anolog Output (4~20mA) VS metering Data
31
EV/DV Series
One metering value can be selected as analog
(mA)
EV/DV Series
( AO Output )
1
0.5
0
45
65
Frequecy (Hz)
0
PT1/CT1
Voltage/Current (V/A)
-PT1×CT1
PT1×CT1
Power/Reactive Power (W/Var)
0
PT1×CT1
Apparent Power (VA)
0.5(C)
0.5(L)
1.0
Power Factor
(Metering Data)
Fig 3.19 (b) Analog Output (0~1mA) VS Metering Data
(V)
( AO Output )
5
2.5
0
45
65
Frequecy (Hz)
0
PT1/CT1
Voltage/Current (V/A)
0
-PT1×CT1
PT1×CT1
PT1×CT1
Apparent Power (VA)
Power/Reactive Power (W/Var)
(Metering Data)
Fig 3.19 (c) Analog Output (0~5V) VS Metering Data
32
0.5(C)
1.0
0.5(L)
Power Factor
The eighth screen: Display back light “on” time
purpose of energy saving and component duration if the keys do not be touched for a period
Fig 3.20 Back light “on” time
time. The “on” time can be set from 0 to 120
Minute. The back light will always be “on” if the
setting value is 0.
As in fig 3.20, the setting time of the back light is
5 minutes. The back light will automatically go to
“off” if there is no touch on the keys in 5 minutes.
The ninth screen: Access code setting page.
This is the last screen of the setting page. The
Fig 3.21 Access Code setting
access code can be changed in this setting page.
It is important to remember the new access code after the setting.
As in fig 3.21, the access code is 0001. Press the V/A key, let the access code be stored in meter and go back to the first setting page. All the setting has been finished. Press “
” and V/A keys,
exit the setting mode.
33
EV/DV Series
setting page. The backlight will go to “off ” for the
The setting page may be different depending on the meter type. Please confirm the meter type
EV/DV Series
before doing the parameter setting.
Take DV130 for example. The seventh page
is real energy presetting page, Use “
” , E and P
key to preset the value of energy. As in Fig 3-22, the
energy value is 0 Kwh, Press V/A to acknowledge
Fig 3-22 Real energy
34
and go to the next setting page.
4.1 Introduction of Modbus Protocol
The ModbusTM RTU protocol is used for communication in EV/DV meter. The data format and
error check method are defined in Modbus protocol. The half duplex query and respond mode is
adopted in Modbus protocol. There is only one master device in the communication net. The others
are slave devices, waiting for the query of the master.
Only master device can communicate with slave device. The slave devices can not communicate with each other. They just response the query of master device.
1. Transmission mode
The mode of transmission defines the data structure within a frame and the rules used to transmit data. The mode is defined in the following which is compatible with Modbus RTU Mode*.
Coding System
8 bit
Start bit
1 bit
Data bit
8 bit
35
EV/DV Series
Chapter 4 Communication
Parity
None
EV/DV Series
Stop bit
1
Error Checking
CRC
2. Protocol
Framing
Address
8-Bits
Function
8-Bits
Data
N×8-Bits
Check
16-Bits
Table 4.1 Data Framing
Address Field
The address field of a message frame contains eight bits. Valid slave device addresses are in
the range of 0~255 decimal. A master addresses a slave by placing the slave address in the address
field of the message. When the slave sends its response, it places its own address in this address
field of the response to let the master know which slave is responding.
Function Field
The function code field of a message frame contains eight bits. Valid codes are in the range of
1~255 decimal. When a message is sent from a master to a slave device the function code field tells
the slave what kind of action to perform.
36
Meaning
Read Relay output
Read Digital Input
Read Registers
Control Relay Output
Preset Multiple-Registers
Action
Status Obtain current status of Relay Output
Status Obtain current status of Digital Input
Obtain Current binary value in one or more registers
Force Relay to a state of on or off
Place specific binary values into a series of consecutive Multiple-Registers
EV/DV Series
Code
01
02
03
05
16
Fig 4.2 Function Code
Data Field
The data field is constructed using sets of two hexadecimal digits, in the range of 00 to FF hexadecimal. The data field of messages sent from a master to slave devices contains additional information which the slave must use to take the action defined by the function code. This can include items
like discrete and register addresses, the quantity of items to be handled, and the count of actual data
bytes in the field.
Check Field
Check field is used in master and slave device to find errors in the data transmitting process.
There may be some error happening to a group of data when they are transmit from one device to the
other due to noise or other interference. The check field guarantee the device does not respond error
37
massages so as to improve system safety and efficiency. CRC16 error check method is adopted in
EV/DV Series
Modbus Protocol.
3. Error Check Method
Messages include an error’s checking field that is based on a Cyclical Redundancy Check (CRC)
method. The CRC field checks the contents of the entire message. It is applied regardless of any
parity check method used for the individual characters of the message. The CRC field is two bytes,
containing a 16 bit binary value. The CRC value is calculated by the transmitting device, which appends the CRC to the message.
The receiving device recalculates a CRC during receipt of the message, and compares the
calculated value to the actual value it received in the CRC field. If the two values are not equal, an
error will be report. The CRC is started by first preloading a 16-bit register to all 1’s. Then a process begins of applying successive 8-bit bytes of the message to the current contents of the register.
Only the eight bits of data in each character are used for generating the CRC. Start and stop bits,
and the parity bit, do not apply to the CRC. During generation of the CRC, each 8-bit character is
exclusive ORed with the register contents. Then the result is shifted in the direction of the least significant bit (LSB), with a zero filled into the most significant bit (MSB) position. The LSB is extracted
and examined. If the LSB was a 1, the register is then exclusive ORed with a preset, fixed value. If
38
the LSB was a 0, no exclusive OR takes place. This process is repeated until eight shifts have been
value, and the process repeats for eight more shifts as described above. The final contents of the
register, after all the bytes of the message have been applied, is the CRC value. When the CRC is
appended to the message, the low-order byte is appended first, followed by the high-order byte.
4.2 Format of Communication
All the examples in this chapter are following the format of Table 4.3. (All data is express in Hex).
Addr
Fun
Data start
reg hi
11H
03H
01H
Data start
reg lo
Data #of
regs hi
Data #of
regs lo
CRC16
Hi
CRC16
Lo
00H
00H
08H
47H
60H
Table 4.3 Protocol Format
In table4.3, the meaning of each abbreviated word is,
Addr: address of slave device
Fun: function code
Data start reg hi: start register address high byte
39
EV/DV Series
performed. After the last (eighth) shift, the next 8-bit byte is exclusive ORed with the register current
Data start reg lo: start register address low byte
EV/DV Series
Data #of reg hi: number of register high byte
Data #of reg lo: number of register low byte
CRC16 Hi: CRC high byte
CRC16 Lo: CRC low byte
1.Read Status of Relay
Function Code 01
Query
This function code is used to read status of Relay in the meter.
1=On 0=Off
There are 2 Relays in the meter. The Address of each Relay is Relay1=0000H and
Relay2=0001H.
The following query is to read Relay Status of the meter Number 17.
40
Fun
Data start
reg hi
11H
01H
00H
Data start
reg lo
Data #of
regs hi
Data #of
regs lo
CRC16
Hi
CRC16
Lo
00H
00H
02H
BFH
5BH
EV/DV Series
Addr
Table 4.4 Relay status query message
Response
The meter response includes the meter address, function code, quantity of data byte, the data,
and error checking. An example response to read the status of Relay1 and Relay2 is shown as
Table4.5. The status of Relay1 and Relay2 is responding to the last 2 bit of the data. Relay1: bit0 Relay2: bit1.
The content of the data is,
Addr
11H
Fun
01H
Byte
count
Data
01H
02H
CRC16
Hi
CRC16
Lo
D4H
89H
Table 4.5 Relay status responds
7
6
5
4
3
2
1
0
0
0
0
0
0
0
1
0
LSB
MSB
（Relay 1 = OFF , Relay 2=ON）
2. Read the Status of DI
Function Code 02
Query
41
1=On 0=Off
EV/DV Series
There are 4 DIs in the meter. The Address of each DI is DI1=0000H, DI2=0001H, DI3=0002H
and DI4=0003H. The following query is to read the 4 DI Status of the meter Number 17.
Addr
Fun
Data start
reg hi
11H
02H
00H
Data start
reg lo
DI num
hi
DI num
lo
CRC16
Hi
CRC16
Lo
00H
00H
04H
7BH
59H
Table4.6 Read 4 DIs Query Message
Response
The Acuvim response includes the Acuvim address, function code, quantity of data characters,
the data characters, and error checking. An example response to read the status of 4 DIs is shown
as Table 4.7. The status of each is responding to the last 4 bit of the data. DI1: bit0 DI2: bit1 DI3: bit2
DI4: bit3.
Data
Addr
11H
Fun
02H
Byte
count
Data
01H
03H
CRC16
Hi
CRC16
Lo
E5H
49H
Table 4.7 Read Status of DI
42
7
6
5
4
3
2
1
0
0
0
0
0
0
1
MSB
0
1
LSB
3 Read Data (Function Code 03)
This function allows the master to obtain the measurement results of the meter. Table 4.8 is an
example to read the 3 measured data (F, V and I) from slave device number 17, the data address of F
is 0000H, V1 is 0001H and V2 is 0002H.
Addr
Fun
Data start
reg hi
11H
03H
00H
Data start
reg lo
Data #of
regs hi
Data #of
regs lo
CRC16
Hi
CRC16
Lo
00H
00H
03H
07H
5BH
Table 4.8 Read F, V, I Query Message
Response
The meter response includes the meter address, function code, quantity of data byte, data, and
error checking. An example response to read F, V and I (F=1388H (50.00Hz), V=03E7H (99.9V),
I=1386H (4.998A) is shown as Table 4.9.
Addr
Fun
Byte
count
Data1
hi
11H
03H
06H
13H
Data1
lo
Data2
hi
Data2
lo
Data3
hi
Data3
lo
CRC16
hi
CRC16
lo
88H
03H
E7H
13H
86H
32H
E8H
Table 4.9 Read F, V and I Message
43
EV/DV Series
Query
4. Control Relay(Function Code 05)
EV/DV Series
Query
This message forces a single Relay either on or off. Any Relay that exists within the meter
can beforced to be either status (on or off). The address of Relays starts at 0000H (Relay1=0000H
Relay2=0001H). The data value FF00H will set the Relay on and the value 0000H will turn it off; all
other values are illegal and will not affect that relay.
The example below is a request to the meter number 17 to turn on Relay1.
Addr
Fun
DO addr
hi
11
05H
00H
DO addr lo
00H
Value hi Value lo CRC16 Hi
FFH
00H
8EH
CRC16
Lo
AAH
Table 4.10 Control Relay Query Message
Response
The normal response to the command request is to retransmit the message as received after the
Relay status has been altered.
Addr
Fun
DO addr
hi
11H
05H
00H
DO addr lo
00H
Value hi Value lo CRC16 Hi
FFH
00H
8EH
Table 4.11 Control Relay Response Message
44
CRC16
Lo
AAH
5. Preset / Reset Multi-Register(Function Code 16)
Function 16 allows the user to modify the contents of a Multi-Register. Any Register that exists
within the meter can have its contents changed by this message. The example below is a request to
an meter number 17 to Preset E (17807.7KWH), while its Hex Value 0002B79DH. E data address is
0109H and 010AH. E register is 32bit or 4 byte.
Addr
Fun
Data start reg
hi
Data start reg
lo
Data #of reg
hi
Data #of reg
lo
Byte
count
11H
10H
01H
09H
00H
02H
04H
Value hi
Value lo
Value hi
Value lo
CRC16 hi
CRC16 lo
00H
02H
B7H
9DH
7DH
0CH
Table 4.12 Control Relay Response Message
Response
The normal response to a preset Multi-Register request includes the slave address, function
code, data start register, the number of registers and error checking.
45
EV/DV Series
Query
EV/DV Series
Addr
Fun
Data start
reg hi
Data start
reg lo
Data #of
reg hi
Data #of
reg lo
CRC16 hi
CRC16 lo
11H
10H
01H
09H
00H
02H
92H
A6H
Table 4.13 Preset Multi-Registers Response Message
4.3 Address Table
Metering data is stored in these register area. Use Modbus 03 function code to read metering
data.
Address
0000H
0001H
0002H
0003H
0004H
0005H
0006H
0007H
0008H
0109H
010AH
Parameter
Frequency F
Voltage V
Current I
Power P
Reactive Power Q
Apparent Power S
Power Factor PF
Load Nature RT
AO Output
Energy E
Range
0 ~ 6500
0 ~ 65535
0 ~ 65535
-32768 ~ 32767
-32768 ~ 32767
0 ~ 65535
-1000~ 1000
76(L)/67(C)/82(R)
0~65535
Object Type
Word
Word
Word
Integer
Integer
Word
Integer
Word
Word
Type of Access
R
R
R
R
R
R
R
R
R
0~9999999
Dword
R
Table 4.14 Metering data address table
46
The Relationship between numerical value in register of Acuvim and the real physical value is as
EV/DV Series
following table. (Rx is the numerical value in register of the meter)
Parameter
Frequency F
Relationship
F=Rx/100
Unit
(Hz)
Voltage V
U=Rx(PT1/PT2)/10
(V)
Current I
I=Rx(CT1/5)/1000
（A）
Power P
P= Rx(PT1/PT2)(CT1/5)/10
（W）
Reactive Power Q
Q=Rx(PT1/PT2)(CT1/5)/10
（Var）
Apparent Power S
S= Rx(PT1/PT2)(CT1/5)/10
（VA）
Power Factor PF
PF=Rx/1000
——
Load Nature RT
ASCII: L、C、R
52H:R 43H:C 4CH:L
——
Energy Kwh
Kwh=Rx/10
Kwh
Table 4.15 Measuring data convert table
47
Parameter Setting
EV/DV Series
Function code: 03 for Reading, 16 for Presetting
Address
0101H
0103H
0104H
0105H
0106H
0107H
0108H
Parameter
Access Code
Communication
Address
Baud Rate
P T1 Lo
PT1 Hi
PT2
CT1
CT2
0102H
Type of access
R/W
0~9999
Object type
Word
R/W
1~254
Word
R/W
0~4
Word
R/W
100~500000
Dword
R/W
R/W
R/W
100~400
5(1)~9999
5(1)
Word
Word
Word
010BH
Relay1 work Mode
R/W
010CH
Relay1 pulse width
R/W
010DH
Relay2 work Mode
R/W
010EH
Relay2 pulse width
R/W
010FH
AO VS Metering Data
R/W
Range
0 - L a t c h , 1 - M o m e n t a r y,
2-Alarm
50~3000
0-Latch,1-Momentary,
2-Alarm
Word
Word
50~3000
Word
0~6,0-Frequency,1-Voltage,
2-Current, 3-Power, 4-Reactive Power, 5-Apparent
Power, 6-Power Factor
Word
Table 4.16 System parameter address
48
Word
Parameter
Type of access
Range
Object type
0110H
LCD Back light Time
R/W
0~120 (Min)
Word
0111H
Alarm object select
R/W
0~7
Word
0112H
Time limited setting
R/W
0~255
0113H
Alarm parameter value
R/W
-30000~30000
0114H
Inequation Sign
R/W
0:< 1:>
Word
0115H
Alarm relate RO
R/W
0:RO1 1:RO2
Word
EV/DV Series
Address
Word
Integer
Table 4.16 System parameter address
Digital Iput(DI) Status:
Function code: 02 for Reading
Address
0000H
Parameter
DI1
Range
1=ON, 0=OFF
Object type
Bit
Type of acess
R
0001H
DI2
1=ON, 0=OFF
Bit
R
0002H
DI3
1=ON, 0=OFF
Bit
R
0003H
DI4
1=ON, 0=OFF
Bit
R
Table 4.17 Digital Input (DI) Address
49
Relay Statue and Control
EV/DV Series
Function code: 01 for Reading, 05 for Controlling.
Address
Parameter
Range
Object type
Type of access
0000H
DO1
1=ON，0=OFF
Bit
R/W
0001H
DO2
1=ON，0=OFF
Bit
R/W
Table 4.18 Relay Address
Note:
1. Object type: Bit - binary bit, word-unsigned integer of 16 bit, Integer - Sign integer of 16 bit,
Dword -unsigned integer of 32 bit.
2. Type of Access: R - Read only, Digital input Relay statue and Data are read by using function
code 02, 01 and 03 respectively. R/W-Read and Write, Data is written by using function code 16 and
control command is written by using function code 05. Writing to read only field is forbidden.
3. Energy data is represented in 32 bit. Both high 16 bit and low 16 bit have successive address
alone. The high 16 bit data should be multiplied by 65536 and plus low 16 bit data to get the energy
data in master software. The unit is 0.1kwh or 0.1kvarh. It will be clear to zero and start again when
energy data accumulate 1 x 106kwh(kvarh). The energy register can be cleared or preset through
communication.
50
EV/DV Series
Appendix
Appendix A Technical Data and Specifications
Input Ratings
Voltage Input
Voltage Rating
-100V Option
100Vac 20% Over Range
-400V Option
400Vac 20% Over Range
Frequency Range
45 to 65Hz
Overload 2 times for continue
2500Vac for 1 Sec (None recurrence)
Voltage Range Through PT
500KV highest at primary side
PT Burden
<0.2VA
Measuring
True-Rms
51
EV/DV Series
Current Input
Current Rating
5Amp, 20% Over Range
Ordering on Special Rating
Current Range Through CT
10000A at primary side
Over Load
10A Continue, 100A/1sec (None Recurrence)
CT Burden
<0.5VA
Measuring
True-Rms
Digital Input (DI)
Optical Isolation Isolate Voltage
52
4000Vac rms
Input Form
Contact with Power Supply
Input Resistance
2K ohm (typical)
Input Voltage Range
16~30Vdc
Close Voltage
> 16Vdc
Max Input Current
20mA
EV/DV Series
Accuracy and Resolution
Parameter
Accuracy
Resolution
Voltage
0.5%
0.1%
Current
0.5%
0.02%
Power
1.0%
0.1%
Reactive Power
1.0%
0.1%
Apparent Power
1.0%
0.1%
Power Factor
1.0%
0.1%
Frequency
0.5%
0.01Hz
Energy
1.0%
Drift with Temp.
Stability 0.1%/Year
0.1Kwh
<100ppm/ ℃
0.1%/Year
53
EV/DV Series
Relay Output
Output Form
Mechanical Contact
Contact Resistance
30m ohm@1A
Max Break Voltage
250Vac, 30Vdc
Max Break Current
3A
Max Isolate Voltage
4000Vac rms
Analog Output
Output Range 4~20mA or 0~1mA or 0~5V
Resolution 12bit
Output
Capability
54
4～20mA
Max Resistance: 500Ω
0～5V
Max Resistance: 10KΩ
0～1mA
Max Resistance: 20mA
EV/DV Series
Standard
Measuring
IEC60687 0.5 ANSI C12.16 Class10
IEC61036 class1 IEC61268 class2
Environment
IEC 60068-2
Safety
IEC 61557-2
EMC
IEC61000-4/2-3-4-5-6-8-11
Dimension
DIN43700
Suitable Condition
Dimensions (mm)
96 ×48 ×60 (Cut 90 ×44)
Protection Level
IP54 (Front), IP20 (Cover)
Weight (g)
400
Temperature
-25℃~70℃
Humidity
0~95% Non-condensing
Power Supply
85~264Vac or 100V~280Vdc
Power
3W MAX
55
EV/DV Series
Appendix B Ordering Information
EV1** 100
5A
DV1**
*
{
{
{
56
5A
*
4 Digital Input RO: 2 Relay Output
AO1: 4～2mA output
AO2: 0～1mA output
AO3: 0～5V output
{
{
5A: Rated current input is 5Aac
1A: Rated current is 1Aac
NA: No current input
100: Rated voltage input is 100Vac
400: Rated voltage input is 400Vac
NA: No voltage input
EV161
EV162
EV163
EV164
EV165
EV166
EV167
EV182
EV184
EV188
EV190
Fig 5.1 EV100 ordering information
{
100
DI:
{
{
AO1: 4~2mA output
AO2: 0~1mA output
AO3: 0~5V output
5A: Rated current input is 5Aac
1A: Rated current is 1Aac
NA: No current input
100: Rated voltage input is 100Vac
400: Rated voltage input is 400Vac
NA: No voltage input
DV101
DV102
DV103
DV104
DV105
DV106
DV107
DV122
DV124
DV128
DV130
Fig 5.2 DV100ordering information
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