AccuEnergy Acuvim II series User manual

Copyright©2007 V1.30
This manual may not be reproduced in whole or in part by any means, without
the expressed written consent 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 representative for latest product specications
before ordering.
I

Please read this manual carefully before doing installation, operation and
maintenance of Acuvim II meter.
Following symbols are used in this user’s manual and on Acuvim II 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.
This mark is on product for UL Listed product
Installation and maintenance of the Acuvim II meter should only be performed
by qualified, competent personnel that have appropriate training and
experience with high voltage and current device.
This document is not t for people without adequate experience and training.
Accuenergy is not liable for any problems occurring under proper operation.
II

Chapter 1 Introduction-------------------------------------------------------------------1
1.1 The Purpose of Acuvim II--------------------------------------------------2
1.2 The Application Area of Acuvim II---------------------------------------3
1.3 The Function of Acuvim II-------------------------------------------------3
Chapter 2 Installation-------------------------------------------------------------------5
2.1 Appearance and Dimensions--------------------------------------------8
2.2 Installation Method------------------------------------------------------9
2.3 Wiring of Acuvim II-------------------------------------------------------11
Chapter 3 Meter Operation and Parameter Setting---------------------------------27
3.1 Display Panel and Keys---------------------------------------------------28
3.2 Metering Data-------------------------------------------------------------31
3.3 Statistics Data-------------------------------------------------------------34
3.4 Demand Data--------------------------------------------------------------36
3.5 Harmonic Data------------------------------------------------------------36
3.6 Expanded I/O Module Data----------------------------------------------38
3.7 Parameter Setting Mode-------------------------------------------------42
3.8 Page recovery Function--------------------------------------------------56
Chapter 4 Function and Software-----------------------------------------------------57
4.1 Basic Analog Measurements---------------------------------------------58
4.2 Max/Min--------------------------------------------------------------------61
4.3 Harmonics and Power Quality Analysis--------------------------------62
4.4 Over-Range Alarming-----------------------------------------------------63
4.5 Extended I/O Module----------------------------------------------------72
4.6 Extended Communication Block---------------------------------------72
Chapter 5 Function and Software-----------------------------------------------------73
III
Content

5.1 Introducing Modbus Protocol--------------------------------------------74
5.2 Format of Communication----------------------------------------------77
5.3 Data Address Table and Application Details of Acuvim II-----------82
Appendix--------------------------------------------------------------------------------107
Appendix A Technical data and specications--------------------------------------108
Appendix B Ordering Information----------------------------------------------------111
Appendix C Revision History----------------------------------------------------------112
IV

Starting!
Congratulations!
You have received an advanced, versatile, multifunction power meter, also
known as a Remote terminal unit (RTU), which will greatly benet your power
system.
When you open the package, you will nd the following items
1. Acuvim II meter 1
2. Pluggable Terminal 3
3. Installation clips 4
4. User’s operation manual 1
5. Maintenance guarantee card 1
Please read this manual carefully before operating or setting the Acuvim II
meter to avoid unnecessary trouble. You can read part of this manual depends
on how you use the Acuvim II meter.
Chapter 1 helps you to understand the fundamental function, specication and
application area of Acuvim II.
Chapter 2 describes detailed installation and wiring of Acuvim II.
Chapter 3 describes the data display and parameter setting method.
Chapter 4 outlines the functions of Acuvim II and the way to use them.
Chapter 5 gives the address table of Acuvim II.
Appendix lists the technical data and specications and ordering information.
V

VI

1
Chapter 1 Introduction
The Purpose of Acuvim II
The Application Area of Acuvim II
The Functions of Acuvim II

2
1.1 The Purpose of Acuvim II
Powerful Multifunction Power Meter
Acuvim II Multifunction digital power meter is designed using modern
MCU and DSP technology. It integrates three-phase energy measuring
and displaying, energy accumulating, power quality analysis, malfunction
alarming and network communication. Large and vivid LCD meets your
visual requirement greatly. Graceful and high-lighted back light makes
it easy to check the measuring data. Simple HMI interface makes it easy
to master. Multi-row displaying lets you observe various data without
touching any keys.
Ideal Choice for Electric Automation SCADA System
Acuvim II can be used to replace all traditional electric meters. It also
can be used as Remote Terminal Unit (RTU) for monitoring and controlling
in a SCADA system. All the measured data is available via digital RS485
communication ports running the ModbusTM protocol.
Energy Management
Acuvim II can measure bidirectional four quadrants kWh and kvarh. It
can provide maximum/minimum energy data and energy demand data.
With the help of master software, you can easily know how the load and
energy are running. It automatically gives you all kinds of measurement
tables as well.
Remote Power Control
The main function of Acuvim II is measuring, and it also has some exible
I/O functions, which make the meter very useable as a distributed RTU
(metering, monitoring, remote controlling in one unit).

3
Power Quality Analysis
With the help of powerful digital signal processing technology, the Acuvim
II intelligent power meter can be used as an online power quality analysis
instrument. It can simultaneously and continuously give out the analysis
results such as THD of voltage and current, harmonics up to 31st order
and unbalance factor of voltage and current, etc.
1.2 The Application Area of Acuvim II
Power Distribution Automation Intelligent Electric Switch Gear
Industry Automation Building Automation
Energy Management System Substation Automation
Resident district power monitoring
1.3 The Function of Acuvim II
Multifunction, High Accuracy
Acuvim II Multifunction Intelligent power meter is powerful in data
collecting and processing. It can not only measure up to several decades
of power parameters, but also do demand metering, harmonic analysis,
statistics of max/min, over range alarming, energy accumulating etc.
Accuracy of Voltage and Current is 0.2%, True-RMS.
Accuracy of Power and Energy is 0.5%, four quadrants metering.
Small Size and Easy Installation
Acuvim II can be installed using a standard ANSI C39.1 (4” Round) or an
IEC 92mm DIN (Square) form. With the 51mm depth after mounting, the
Acuvim II can be installed in a small cabin. The xing clips are used for
easy installation and remove.

4
Easy to Use
With a large high density LCD screen, the display of the Acuvim II is easy
to read and use. All the measuring data and setting parameters can
be accessed by using panel keys or a communication port. The setting
parameters are protected in EEPROM, which will maintain its content
after the meter is powered off. With the backlight of the LCD, the
display can be easily read in a dim environment. The back light “on”
time is selectable.
Multiple Wiring Modes
The Acuvim II can easily be used in high voltage, low voltage, three
phase three wires, three phase four wires and single phase system using
approximate wiring.
High safety, high stability
Acuvim II was designed according to industrial standards. It can run
stably under high power disturbance condition as it has passed EMC and
Safety test according to IEC standards and UL certication.

5
Chapter 2 Installation
Appearance and Dimensions
Installation Method
Wiring of Acuvim II

6
Considerations When Installing Meters
 Installation of the Meter must be performed by only qualied personnel
who follow standard safety precautions during all procedures. Those per-
sonnel should have appropriate training and experience with high voltage
devices. Appropriate safety gloves, safety glasses and protective clothing
are recommended.
 During normal operation of the Meter, dangerous voltages ow through
many parts of the meter, including: Terminals and any connected CTs (Cur-
rent Transformers) and PTs (Potential Transformers), all I/O Modules (Inputs
and Outputs) and their circuits. All Primary and Secondary circuits can, at
times, produce lethal voltages and currents. Avoid contact with any current-
carrying surfaces.
 Do not use the meter or any I/O Output Device for primary protection or
in an energy-limiting capacity. The meter can only be used as secondary
protection. Do not use the meter for applications where failure of the meter
may cause harm or death. Do not use the meter for any application where
there may be a risk of re.
 All meter terminals should be inaccessible after installation.
 Do not apply more than the maximum voltage the meter or any attached
device can withstand. Refer to meter and/or device labels and to the Speci-
cations for all devices before applying voltages. Do not HIPOT/Dielectric
test any Outputs, Inputs or Communications terminals.
 ACCUENERGY recommends the use of Shorting Blocks and Fuses for
voltage leads and power supply to prevent hazardous voltage conditions or
damage to CTs, if the meter needs to be removed from service. CT ground-
ing is optional.
 ACCUENERGY recommends use dry cloth to wipe the meter.

7
NOTE: IF THE EQUIPMENT IS USED IN A MANNER NOT
SPECIFIED BY THE MANUFACTURER, THE PROTECTION
PROVIDED BY THE EQUIPMENT MAY BE IMPAIRED.
NOTE: THERE IS NO REQUIRED PREVENTIVE MAINTENANCE OR
INSPECTION NECESSARY FOR SAFETY. HOWEVER, ANY REPAIR OR
MAINTENANCE SHOULD BE PERFORMED BY THE FACTORY.
DISCONNECT DEVICE: The following part is considered the
equipment disconnect device.
A SWITCH OR CIRCUIT-BREAKER SHALL BE INCLUDED IN THE END-
USE EQUIPMENT OR BUILDING INSTALLATION. THE SWITCH SHALL
BE IN CLOSE PROXIMITY TO THE EQUIPMENT AND WITHIN EASY
REACH OF THE OPERATOR. THE SWITCH SHALL BE MARKED AS THE
DISCONNECTING DEVICE FOR THE EQUIPMENT.

8
The installation method is introduced in this chapter. Please read this
chapter carefully before beginning installation work.
2.1 Appearance and Dimensions
Appearance
Fig 2.1 Appearance of Acuvim II
Part Name Description
1. Enclosure The Acuvim II enclosures are made of high strength anti-
combustible engineering plastic
2. Front Casing After the installation, this part is before the panel.
3. LCD Display Large bright white backlight LCD Display
4. Key Four keys are used to select display and set
5. Voltage Input Terminals Used for Voltage input
6. Current input Terminals Used for Current input
7. Power Supply Terminals Used for Supply input
8. Communication Terminals Communication output
9. Installation Clip The clips are used for xing the meter to the panel
Table 2.1 Part name of Acuvim II
①②
③
④
⑤
⑥
⑦
⑧
⑨

9
Dimensions (mm)
Front view Side view
Fig 2.2 Dimensions
2.2 Installation Method
Environmental
Before installation, please check the environment temperature and
humidity to ensure the Acuvim II meter is being placed where optimum
performance will occur.
Temperature
Operation: -25℃to 70℃.
Storage: -40℃to 85℃
Humidity
5% to 95% non-condensing.
Acuvim II meter should be installed in dry and dust free environment and
avoid heat, radiation and high electrical noise source.

10
Installation Steps
Acuvim II can be installed using a standard ANSI C39.1 (4” Round) or an
IEC 92mm DIN (Square) form.
1. Firstly, cut a square hole or round hole on the panel of the switch
gear.
The cutting size is shown in g 2.3. The Unit is mm.
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.
Fig 2.4 Put the meter into the square hole

11
3. Finally, put clips back to the meter from the backside and push the
clip tightly so that the meter is xed on the panel.
Fig 2.5 Use the clips to x the meter on the panel
2.3 Wiring of Acuvim II
Terminal Strips
There are four terminal strips on the back of Acuvim II. The 1, 2 and 3
are used to represent each phase of three phase system. They have the
same meaning with A, B and C or R, S and T in three phase system.

12
Current Input Terminal Strip
Voltage Input Terminal Strip
Power Supply Terminal strip
Communication terminal strip
Fig 2-6. Terminal Strips of Acuvim II
7 8 9
V1V2V3
10
VN
I
11
I
12
I
21
I
22
I
31
I
32
1 2 3 4 5 6
!
P ow e r S up ply
1211
N / –L/ +
13
C o m m P or t
A B S
14 15 16