ROOTECH Accura 2350-VDC User manual

Notice
Accura 2350-VDC User Guide
Page 2
ⓒ2014 Rootech Inc. All Rights Reserved
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.

Accura 2350-VDC User Guide
Notice
ⓒ2014 Rootech Inc. All Rights Reserved
Page 3
Caution
Observe the following instructions, or it may cause permanent damage to the product.
To ensure that the device operates correctly, make sure that:
◼The device is correctly installed.
About the Manual
Rootech, Inc. reserves the right to make changes in the product specifications shown in this User Guide
without prior notice. We recommend that customers should obtain the latest information on product
specifications and the manual before making orders.
In the absence of written agreements, Rootech, Inc. assumes no liability for applications assistance,
customer’s system design, or infringement of patents or copyrights induced by third parties arising from
the use of the products described herein.
We endeavor to provide accurate information in the document. However, we are not responsible for any
errors which may appear here and reserves the right to make changes without prior 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.

Warranty
Accura 2350-VDC User Guide
Page 4
ⓒ2014 Rootech Inc. All Rights Reserved
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 coming from when 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

Accura 2350-VDC User Guide
Warranty
ⓒ2014 Rootech Inc. All Rights Reserved
Page 5
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 with system design provided by Rootech's personnel or representatives 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 the product and associated
documentation. The original purchaser should acknowledge that 100% up time is not realizable because of
possible hardware or software defects. The original purchaser should 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.
Standard Compliance
Process Control Equipment
E324900

Revision History
Accura 2350-VDC User Guide
Page 6
ⓒ2014 Rootech Inc. All Rights Reserved
Revision History
The following versions of 「Accura 2350-VDC User Guide」have been released.
Revision
Date
Description
1.00
June 17, 2014
Initial release
1.10
August 7, 2014
Changed the power supply voltage to 5V and the product name to Accura
2350-VDC
Added content on events
1.20
December 18, 2014
Added the Notice, Standard Compliance, Warranty, and Contents sections
Added content on environmental conditions, including temperature and
humidity
Removed the external power supply
Updated content on events and added the communication setup section
1.21
April 7, 2015
Changed the image of the port with an incorrect name
Changed the logo image of the specification
Changed the symbol used to indicate a range from ~ to –
1.22
February 8, 2022
Changed the image and text on the cover page, the product’s dimensions,
and information on certifications
Updated the document according to the latest version of the
documentation

Accura 2350-VDC User Guide
Contents
ⓒ2014 Rootech Inc. All Rights Reserved
Page 7
Contents
Chapter 1 Installation and Wiring.......................................................................................................................................9
Before Installation ....................................................................................................................................................................................................9
Components .......................................................................................................................................................................................................9
Dimensions..........................................................................................................................................................................................................9
Installation.................................................................................................................................................................................................................11
Panel Mounting..............................................................................................................................................................................................11
DIN-Rail Mounting....................................................................................................................................................................................... 11
Wiring .................................................................................................................................................................................................................12
Chapter 2 Accura 2350-VDC Operation/Setup .............................................................................................................. 13
Power Supply...........................................................................................................................................................................................................13
Functions ...................................................................................................................................................................................................................13
Button Operation ..........................................................................................................................................................................................15
LCD Screen................................................................................................................................................................................................................ 16
Display Mode.................................................................................................................................................................................................. 16
Setup Mode..................................................................................................................................................................................................... 17
Communication Setup................................................................................................................................................................................20
LED Indicators .........................................................................................................................................................................................................22
Chapter 3 Accura 2300[S] Operation/Setup................................................................................................................... 23
Display Mode of Accura 2300[S]...........................................................................................................................................................23
EVENT LED / LCD Backlight of Accura 2300[S].............................................................................................................................. 24
DO Operation Setup in Setup Mode of Accura 2300[S]........................................................................................................... 24
Setup Mode of Accura 2300[S].............................................................................................................................................................. 25
Event Log Mode of Accura 2300[S].....................................................................................................................................................25
Full-screen Display Mode of Accura 2300[S] ..................................................................................................................................27
Appendix A Specifications................................................................................................................................................. 28
Appendix B Ordering Information................................................................................................................................... 29

Chapter 1 Installation and Wiring
Accura 2350-VDC User Guide
Page 8
ⓒ2014 Rootech Inc. All Rights Reserved
Figures
Fig 1.1 Accura 2350-VDC Components ................................................................................................................................................9
Fig 1.2 Accura 2350-VDC Front ................................................................................................................................................................9
Fig 1.3 Accura 2350-VDC Rear..................................................................................................................................................................9
Fig 1.4 Accura 2350-VDC Side ...............................................................................................................................................................10
Fig 1.5 Panel Mounting..............................................................................................................................................................................11
Fig 1.6 DIN-Rail Mounting .......................................................................................................................................................................11
Fig 1.7 DC Voltage and Communication Cable Connection ................................................................................................... 12
Fig 2.1 Accura 2350-VDC Front ............................................................................................................................................................. 13
Fig 2.2 Analog Input DC Voltage ..........................................................................................................................................................14
Fig 2.3 Start Event / End Event of Over Event................................................................................................................................19
Fig 2.4 Start Event / End Event of Under Event............................................................................................................................. 19
Fig 3.1 DC Voltage Screen of Channels 1 and 2........................................................................................................................... 23
Fig 3.2 DC Voltage Screen of Channels 3 and 4........................................................................................................................... 24
Fig 3.3 DC Voltage Screen of Channels 5 and 6........................................................................................................................... 24
Fig 3.4 DC Voltage Screen of Channels 7 and 8........................................................................................................................... 24
Fig 3.5 DO Operation Setup in Setup Mode of Accura 2300[S]........................................................................................... 25
Fig 3.6 Start Event of Over Event..........................................................................................................................................................25
Fig 3.7 Start Event of Under Event....................................................................................................................................................... 25
Fig 3.8 Event Time-stamp .........................................................................................................................................................................26

Accura 2350-VDC User Guide
Chapter 1 Installation and Wiring
ⓒ2014 Rootech Inc. All Rights Reserved
Page 9
Chapter 1 Installation and Wiring
Before Installation
Components
Fig 1.1 Accura 2350-VDC Components
Accura 2350-VDC
Mounting wings L/S
Two screws
RJ12 6C communication line
Dimensions
Fig 1.2 Accura 2350-VDC Front
Fig 1.3 Accura 2350-VDC Rear

Chapter 1 Installation and Wiring
Accura 2350-VDC User Guide
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ⓒ2014 Rootech Inc. All Rights Reserved
Fig 1.4 Accura 2350-VDC Side

Accura 2350-VDC User Guide
Chapter 1 Installation and Wiring
ⓒ2014 Rootech Inc. All Rights Reserved
Page 11
Installation
Panel Mounting
Fig 1.5 Panel Mounting
DIN-Rail Mounting
Fig 1.6 DIN-Rail Mounting

Chapter 1 Installation and Wiring
Accura 2350-VDC User Guide
Page 12
ⓒ2014 Rootech Inc. All Rights Reserved
Wiring
①Connect the cable to the DC voltage input ports according to the positive/negative polarity(+/-) of
the ports.
②Connect the RJ12 6C communication line to the RJ12A/RJ12B port.
(Accura 2350-VDC module receives power from Accura 2300[S] via the RJ12 6C communication line.)
Fig 1.7 DC Voltage and Communication Cable Connection

Accura 2350-VDC User Guide
Chapter 2 Accura 2350-VDC Operation/Setup
ⓒ2014 Rootech Inc. All Rights Reserved
Page 13
Chapter 2 Accura 2350-VDC Operation/Setup
Fig 2.1 Accura 2350-VDC Front
Power Supply
Item
Description
Power supply
Receives power from Accura 2300[S] through the RJ12 6C communication line
Current consumption
0.11A @ 5V RJ12 power supply
Functions
Analog Input : 8 DC Voltage Channels
Ch 1
Ch 2
Ch 3
Ch 4
Ch 5
Ch 6
Ch 7
Ch 8
Port name
VDC1
VDC2
VDC3
VDC4
VDC5
VDC6
VDC7
VDC8
Ground 1
VDC1G
VDC2G
VDC3G
VDC4G
VDC5G
VDC6G
VDC7G
VDC8G
1. DO1G , DO2G … and DO8G are different grounds corresponding to each channel.

Chapter 2 Accura 2350-VDC Operation/Setup
Accura 2350-VDC User Guide
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ⓒ2014 Rootech Inc. All Rights Reserved
Item
Description
Connector type
Terminal block
Wire specification
1.5 to 3.5 mm2(16 to 12 AWG), copper or aluminum
Input voltage
DC voltage -50 V to 50 V
Isolation/channel
AC 2,000 V for 1 minute, 8 channels
(differential inputs, non-isolated between channels)
Input resistance
Higher than 2 MΩ
Accuracy
±0.5% FS 1
Event
“Over”/”Under”event 2selectable based on the threshold value for each channel
1. Full Scale (FS) indicates 50 V.
2. An “Over”event indicates an event where the measured value rises above the threshold. An “Under”event
indicates an event where the measured value falls below the threshold. Over and Under voltage events consist of
start and end events. Either event can be configured.
Fig 2.2 Analog Input DC Voltage
Meter
DC Voltage
-50 Vdc ~ 50 Vdc
VDC1
VDC1
G
Measurement
Input resistance
>2MΩ

Accura 2350-VDC User Guide
Chapter 2 Accura 2350-VDC Operation/Setup
ⓒ2014 Rootech Inc. All Rights Reserved
Page 15
Button Operation
The SET button on the Accura 2350-VDC module is used to perform the following functions.
Display mode
Displays the module ID and DC input voltage
Setup mode
Sets up the module ID and the DC input voltage parameter for each channel
Button
Function
[Display Mode]
Displays the module ID and DC input voltage
[Setup Mode]
Short press 1
Move to the setup mode.
(The setup menu is sequentially selected each time the SET
button is pressed.)
Long press 2
Preset values blink and can be changed.
Short press
Select a preset value to change by pressing the button.
(The setup value changes sequentially each time the button is
pressed.)
Long press
Save the selected setup value. And then the screen stops blinking.
(Move to the next setup menu.)
1. Press the button and release it immediately.
2. Release the button after pressing it for 1 second.
Note
If there is no button operation for 10 seconds in the setup mode, the screen automatically returns to
the display mode.

Chapter 2 Accura 2350-VDC Operation/Setup
Accura 2350-VDC User Guide
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ⓒ2014 Rootech Inc. All Rights Reserved
LCD Screen
Display Mode
Accura 2350-VDC displays the module ID and DC input voltage, and the screens appear in the following
sequence. Short press the SET button in the display mode to move to the setup mode.
ID
DC Voltage on
Channel 1 & 2 1
DC Voltage on
Channel 3 & 4 1
DC Voltage on
Channel 5 & 6 1
DC Voltage on
Channel 7 & 8 1
1. Channels can be identified by checking LEDs on both sides of the LCD screen.
ID Display
Display
Description
ID [d][d] 1
Accura 2350 ID 2
1. d →decimal number
2. Module IDs are divided into as follows. The standby ID 255 is assigned to all Accura 2350 modules as a
factory default value.
Accura 2350 ID
ID
Description
Communication ID
ID 0 - 39
ID of Accura 2350 module that enables communication
Conflict ID
Redundant
IDs
There are more than 2 identical IDs.
Communication unavailable
Standby ID
ID 255
Module ID for checking connection status Communication unavailable
DC Input Voltage Display
The LCD screen displays the DC input voltage of 2 channels at once. Users can check the channel number
of the displayed measurement data through LEDs on both sides of the screen.
Display
1st row [d][d].[d] 1
Displays the DC voltage of channels 1,3,5,7 [V]
2nd row [d][d].[d] 1
Displays the DC voltage of channels [V]
1. d →decimal number

Accura 2350-VDC User Guide
Chapter 2 Accura 2350-VDC Operation/Setup
ⓒ2014 Rootech Inc. All Rights Reserved
Page 17
Setup Mode
Each time the SET button is short pressed, the next setup menu is selected.
ID
Event
Type for
Channel 1
Threshold
for
Channel 1
Hysteresis
for
Channel 1
Channels
2-7
Event
Type for
Channel 8
Threshold
for
Channel 8
Hysteresis
for
Channel 8
Note
If there is no button operation for 10 seconds in the setup mode, the screen automatically returns to
the display mode.
ID Setup
Setup
Description
ID [d][d] 1
Default 255
ID of Accura 2350 module 2
Setup range: 0 - 39
1. d →decimal number
2. Module IDs are divided into three types of IDs as follows. The standby ID 255 is assigned to all Accura 2350 modules
as a factory default value.
Accura 2350 ID
ID
Description
Communication ID
ID 0 - 39
ID of the module that enables communication
Conflict ID
Redundant IDs
There are more than 2 identical IDs. communication unavailable
Standby ID
ID 255
Module ID for checking connection status, communication unavailable

Chapter 2 Accura 2350-VDC Operation/Setup
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ⓒ2014 Rootech Inc. All Rights Reserved
Event Setup for Each Channel [1-8 →Channel Number, Eu →Event]
Setup Range
oFF[default: OFF]
Events unavailable
our[Over]
Over event
A start event 1occurs when the measured value rises above the
threshold value for event detection.
unr[Under]
Under event
A start event 1occurs when the measured value falls below the
threshold value for event detection.
1.Over and Under voltage events consist of start and end events.
Details on Over Event settings are as follows.
Item
Description
Start level
Threshold value for event detection
End level
Threshold value –Hysteresis
Start event of Over event
A start event occurs when the measured value exceeds the Over threshold value. A
start event occurs again only if the measured value rises above the threshold value
again after the value drops below the end level and an end event occurs.
End event of Over event
An end event occurs when the measured value drops below the end level.
Hysteresis
When the measured values often exceed and fall below the threshold value for event
detection, it can cause multiple events to occur. Thus, for effective event
management, it is necessary to set up a proper hysteresis level. The default value is 1
V, and it can be configured.
Details on Under Event settings are as follows.
Item
Description
Start level
Threshold value for event detection
End level
Threshold value + Hysteresis
Start event of Under event
A start event occurs when the measured value drops below the start level. A Start
event occurs again only if the measured value drops below the start level again after
the value rises above the end level and an end event occurs.
End event of Under event
An end event occurs when the measured value rises above the end level.
Hysteresis
When the measured values often exceed and fall below the threshold value for event
detection, it can cause multiple events to occur.
Thus, for effective event management, it is necessary to set up a proper hysteresis
level. The default value is 1 V, and it can be configured.

Accura 2350-VDC User Guide
Chapter 2 Accura 2350-VDC Operation/Setup
ⓒ2014 Rootech Inc. All Rights Reserved
Page 19
Threshold Setup for Each Channel [1-8 →Channel Number, th →Threshold]
Setup Range
[d][d].[d] 1
Default: 50.0 V
Threshold value
Setup range: 0.0 - 50.0 V
1. d →decimal number
Hysteresis Setup for Each Channel [1-8 →Channel Number, hy →Hysteresis]
Setup Range
[d][d].[d] 1
Default: 1.0 V
Hysteresis value
Setup range: 0.25[FS 0.5%] - 50.0 V
1. d →decimal number
Fig 2.3 Start Event / End Event of Over Event
Threshold
start event end event
with hysteresis
Start Event
End Event
VDC
VDC Over
Fig 2.4 Start Event / End Event of Under Event
Threshold
start event end event
with hysteresis
Start Event
End Event
VDC
VDC Under

Chapter 2 Accura 2350-VDC Operation/Setup
Accura 2350-VDC User Guide
Page 20
ⓒ2014 Rootech Inc. All Rights Reserved
Communication Setup
The following parameters can be set up via Modbus communication. Refer to 「Accura 2300[S]/2350
Communication User Guide」for details on communication settings.
Register
Number
Name
Format
Attribute
Description
1261
Module ID for
extended setup
Uint16
PRW
Designates the ID of Accura 2350-VDC module to set up
For the module ID assigned to this register, extended setup
for registers 3801 and 3802-4000 is performed.
Setup range: 0 - 39 Default : 0
3801
Access for
extended
module setup
Uint16
PRW
Base register for accessing registers 3802-4000
By reading this register, the data collected from the module ID
assigned to register 1261 can be fetched to registers 3802-4000.
After a successful fetch, the Bit[15] is indicated as 1. By writing 1
to this register, data on registers 3802-4000 are applied to the
designated module.
3802
Confirmation of
module type
Unit16
PRW
Detection code for the VDC module: 5
By writing the detection code 2 to the register, device setup for
the VDC module can be performed. If the detection code is not
entered properly, device setup for the VDC module cannot be
performed.
3803
Sign of the
measured value
of channel 1
Uint16
PRW
Sets up the method of displaying measured voltage value
ranging from -50 to 50V
If it is set to 1, the negative sign of voltage is removed and only
the positive voltage value is displayed.
0 : -50 to 50V positive or negative value available
1 : (default) 0 to 50V only positive value available
3804
Reserved
3805
Averaging
time
of channel 1
Uint16
PRW
Sets up a time interval for calculating the average value of
collected data
Voltage is measured with a resolution of 1 ms during the preset
time interval and the average value is calculated every 0.5
seconds. Unit : msec
Setup range : 1-32 [ms]
Default : 32 [ms]
3806-
3809
Reserved
3810-
3811
Threshold
of channel 1
Float32
PRW
Sets up the threshold value for the detection of Over or Under
event
The event type of channel 1 can be set via Register 3816.
A start event occurs when a measured value rises above or falls