ROOTECH ACCURA 2500 User manual

U
ser Guide [English]
R
evision 1.60 March 8, 2023
Energy Solution for
Human & Nature
ACCURA
Smart DC Distribution Panel Digital Power
Meter/Power Measuring Module
Provide the Best Multi-functional Smart Device Solution
2500/2550[DC]
(
UL Certification Process Underway)

Smart Distribution Panel Digital Power Meter
Main Distribution Panel Module
Accura 2500M Front Accura 2500M Rear
Main Distribution Panel Module + Main Distribution Panel
HMI Module
Main Distribution Panel Module with Voltage Divider
Accura 2500D/2500M Front Accura 2500M-VD Front
Main Distribution Panel HMI Module
Accura 2500D Front Accura 2500D Rear

DC Power Measuring Module DC Power Measuring Module DC Terminal Block
Accura 2550CMD-1P-250A TM-CM-1P-105
Accura 2550CMD-1P-1500A Accura 2550CMD-1P-125A TM-CM-1P-60
Accura 2550CMD-1P-100A TM-CM-1P-50L
Accura 2550CMD-1P-750A Accura 2550CMD-1P-60A TM-CM-1P-50

DC Power Measuring Meter
Accura 2550DCM-500V-80A Accura 2550DCM-50V-80A
Special-purpose Modules
Accura 2550TEMP Accura TSEN
Accura 2550GW

Accura 2500/2550 User Guide [DC] Notice
ⓒ2019 Rootech Inc. All Rights Reserved Page 5
Notice
Symbols
Caution
Indicates the presence of dangerous voltage which can cause severe injury or death if
proper precautions are not followed.
Caution
Alerts users of the presence of hazards which can cause injury to persons, property damage
or damage to the device if proper precautions are not followed.
Note
Indicates major instructions for the installation, operation, and maintenance of the product.
Indicates alternative voltage or current.
Indicates direct voltage or current.
Installation Considerations
The installation, operation, and maintenance of the product should be performed only by qualified,
competent personnel that have received appropriate training for high voltage and current devices.
Caution
If hazardous voltages are mishandled while installing and operating the product in the field, it can cause
serious injury or death.
This device must be installed and serviced only by qualified personnel who have in-depth knowledge of
installing, commissioning and operating the device and have had appropriate training. He or she should
have read and understood the various safety measures and warnings stated in the instructions.
Before carrying out any work on the device, switch off the power supply to the device.
Always use an appropriate voltage detection device to confirm the absence of voltage.
Always power the device with the correct rated voltage.
Install the device in a suitable electrical cabinet by following recommended installation instructions.
Failure to take these precautions could cause serious injuries or death.

Notice Accura 2500/2550 User Guide [DC]
Page 6 ⓒ2019 Rootech Inc. All Rights Reserved
Caution
Observe the following instructions, or permanent damage may occur to the product.
To ensure that the device operates correctly, make sure that:
The device is correctly installed.
The auxiliary power supply voltage indicated on the product is observed: AC 100 – 240 V, DC 100 –
300 V
About the Manual
Rootech Inc. reserves the right to make changes in the device specifications shown in this User Guide without
notice. Therefore, we recommend that customers should check the latest information on specifications of
the device before making orders.
In the absence of written agreements, Rootech Inc. assumes no liability for assistance with product
applications and the system design created by customers or legal issues, including infringement of
intellectual property arising from the use of modules described herein by third-parties.
We are committed to providing accurate information in this document. However, we assume no responsibility
for any errors in the document and reserves the right to make changes without notice.
Limitation of Liability
Where applicable law allows and does not prohibit or restrict such limitation, Rootech, Inc’s liability for this
product shall be limited to the amount actually paid by customers for the product.

Accura 2500/2550 User Guide [DC] Warranty
ⓒ2019 Rootech Inc. All Rights Reserved Page 7
Warranty
Rootech Inc. provides warrants for two years from the product receipt date only to the original purchaser of
the products and software that are sold or licensed by the company.
To obtain warranty service, the purchased products should be free from serious defects in material and
workmanship.
The software is provided in an up-to-date version, thus we do not offer any warranty for the software
product.
In order to make a product claim under the warranties described above, the original purchaser should
immediately contact Rootech headquarters. Upon receiving claims, Rootech will check out the product either
at where the purchaser is or at the company after receiving the product from the customer, who is
responsible for the cost of shipping the product. After inspecting the product, we will provide repair or
replacement services for the product.
Rootech will decide at its discretion whether to repair or replace it or give a refund for the product for when
the warranty period for the product expired or issues related to the product are not applicable for warranty
terms and conditions.
Limitation of Warranty
The Warranty does not apply to uninterrupted or error-free operation of the product or cover normal wear
and tear of the product or costs caused by the removal, installation, or troubleshooting of the customer's
electrical systems.
Defects caused by any of the following factors are not covered under the warranty.
Improper use(alteration, accident, misuse, abuse) or failure to act in accordance with installation,
operation or maintenance instructions
Unauthorized modifications, changes or repair attempts
Failure to comply with applicable safety standards & regulations
Damages resulting from transporting or storing the product
Damages caused by the force majeure event, including fire, flood, earthquakes, storm damage,
overvoltage & lightning
If the original identification marks(trade-mark, serial number, etc.) have been defaced, altered, or
removed

Warranty Accura 2500/2550 User Guide [DC]
Page 8 ⓒ2019 Rootech Inc. All Rights Reserved
Rootech shall not be liable for any other claims except the claims made by customers, including the original
purchaser, his employees, agents, or contractors for any loss, damage, or expense incurred related to the
purchased product when the above warranty terms and conditions are not fulfilled.
Any technical assistance provided by Rootech's personnel or representatives in system design shall be
deemed to be a suggestion. The original purchaser is responsible for determining the feasibility of such
suggestions and should conduct tests to prove their feasibility
It is the original purchaser’s responsibility to determine the suitability of any product and associated
documentation. The original purchaser should acknowledge that 100% uptime is not guaranteed because
of possible hardware or software defects. The original purchaser should also recognize that such defects and
failures may cause inaccuracies or malfunctions.
No agency, corporate entity, or employee of Rootech or other companies has authority to amend, modify
or extend the terms and conditions of this warranty in any way without express written authorization from
Rootech, Inc.
Standards Compliance
Energy-usage Monitor
E522977 (Certification Process Underway)
R-R-RTE-Accura2500

Accura 2500/2550 User Guide [DC] Revision History
ⓒ2019 Rootech Inc. All Rights Reserved Page 9
Revision History
The revision history of Accura 2500/2550 User Guide[DC] is as follows.
Revision Date Description
Revision 1.00 March 20, 2020 First issue
Revision 1.10 October 14, 2020 Updated content related to events
Modified content about accuracy
Revision 1.20 December 3, 2020 Added the Appendix B Module Connection
Changed description of accuracy
Added content on the start event of power quality events
Revision 1.21 January 8, 2021 Changed errors in set values for the aggregation of the Max/Min
values.
Revision 1.30 June 14, 2021 Divided the product manual into the AC and DC versions of Accura
2550CM module
Changed the name of Accura 2550CMD module for DC current
measurement
Added Accura 2550DCM module for DC voltage and current
measurement
Modified content on custom events
Added Accura 2550CMD-1P-750A model
Changed the maximum current value of Accura 2550CMD module
(170% -> 120%)
Changed the type of the internal communication cable for the
display module
Added the Locale item to system setup items
Revision 1.31 September 10, 2021 Added the Accura 2500M/Voltage Divider device for high DC voltage
measurement
Revision 1.40 March 30, 2022 Modified content on module connection
Added special-purpose modules
Added Accura 2550CMD-1P-1500A model
Changed content on event settings
Added the unipolar connection mode
Added content on standards, as well as the network setup parameter
Updated the setup section of Accura 2550DCM meter
Revision 1.41 July 18, 2022 Updated data on the product certifications
Revision 1.50 December 12, 2022 Changed the maximum measuring range of Accura 2550DCM-50V
module to 60 V
Revision 1.60 March 8, 2023 Changed the maximum measuring range of Accura 2550CMD-1P-
1500A module to 2,200 A
Changed the dimensions, components, and installation method for
Accura 2550CMD-1P-1500A module

Contents Accura 2500/2550 User Guide [DC]
Page 10 ⓒ2019 Rootech Inc. All Rights Reserved
Contents
Chapter 1
Product Introduction ..................................................................................................................................... 18
Overview ..................................................................................................................................................................................................................18
Product Information ...........................................................................................................................................................................................20
Smart DC Distribution Panel Digital Power Meter .....................................................................................................................20
Special-purpose Module.........................................................................................................................................................................21
Installation Example ..................................................................................................................................................................................22
Product Features.........................................................................................................................................................................................24
Chapter 2 Installation.......................................................................................................................................................28
Conditions for Installation...............................................................................................................................................................................28
Before Installation................................................................................................................................................................................................29
Product Appearance .................................................................................................................................................................................29
Components .................................................................................................................................................................................................34
Dimensions....................................................................................................................................................................................................38
Installation Example ..................................................................................................................................................................................43
Step 1: Panel Mounting ....................................................................................................................................................................................44
Mounting Accura 2500D on the Panel ............................................................................................................................................44
Mounting Accura 2500M on the Panel ...........................................................................................................................................45
Mounting Accura 2550CMD on the Panel.....................................................................................................................................48
Installation of Accura 2550DCM .........................................................................................................................................................53
Step 2: Wiring Accura 2500M Module......................................................................................................................................................54
Voltage Wiring of Accura 2500M .......................................................................................................................................................54
Voltage Wiring of Accura 2500M-VD...............................................................................................................................................57
Control Power Supply /Ground Wiring............................................................................................................................................59
Step 3: Connecting Accura 2500M with 2500D via the Communication Cable....................................................................61
Step 4A: Current Wiring of Accura 2550CMD Module......................................................................................................................63
Direct Connection to Accura 2550CMD-1P Module.................................................................................................................63
Through-hole Wiring of Accura 2550CMD-1P Module...........................................................................................................65
Step 4B: Voltage/Current Wiring of Accura 2550DCM......................................................................................................................66
Step 5: Connecting Accura 2500M with 2550 Modules ...................................................................................................................67
Step 6: Connecting Accura 2500M Modules for External Communication .............................................................................69
Ethernet Communication........................................................................................................................................................................69
RS-485 Communication ..........................................................................................................................................................................71
Chapter 3 Accura 2500M.................................................................................................................................................72
Device Composition ...........................................................................................................................................................................................72
Control Power Supply...............................................................................................................................................................................73
Voltage Terminal Block ............................................................................................................................................................................74
Ethernet Port for External Communication....................................................................................................................................76