ROOTECH ACCURA 2350-DCM User manual

Notice
Accura 2350-DCM User Guide
Page 2
ⓒ2018 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 2300/2350 User Guide
Notice
ⓒ2018 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-DCM User Guide
Page 4
ⓒ2018 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-DCM User Guide
Warranty
ⓒ2018 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.

Revision History
Accura 2300/2350 User Guide
Page 6
ⓒ2018 Rootech Inc. All Rights Reserved
Revision History
The following versions of Accura 2350-DCM User Guide have been released.
Revision
Date
Description
1.00
August 27, 2018
Initial release
1.01
September 21, 2018
Changed the current measurement accuracy and added the
power/energy measurement accuracy
1.10
October 18, 2018
Added Accura 2350-DCM-500V-80A module
1.20
December 24, 2018
Added a note for the number of connectable devices
Changed the temperature drift to 0.02 %
Added content on event alarm reset
Increased the number of voltage and current events to 5
1.21
January 22, 2019
Added content on linked operation for the 500 V module
1.22
February 8, 2022
Changed the cover page and information on certifications
Updated the document according to the latest version of the
documentation

Accura 2350-DCM User Guide
Contents
ⓒ2018 Rootech Inc. All Rights Reserved
Page 7
Contents
Chapter 1 Installation and Wiring...................................................................................................................................... 9
Before Installation ..................................................................................................................................................................................................9
Components...................................................................................................................................................................................................9
Dimensions...................................................................................................................................................................................................10
Installation...............................................................................................................................................................................................................11
Panel Mounting .........................................................................................................................................................................................11
DIN-Rail Mounting...................................................................................................................................................................................12
Power Supply Connection ....................................................................................................................................................................12
Communication Cable Connection .................................................................................................................................................. 13
Chapter 2 Accura 2350-DCM Operation/Setup ............................................................................................................. 14
Device Configuration and Operation ........................................................................................................................................................ 14
Voltage Connection and Control Power Supply........................................................................................................................14
Measurement and Event ....................................................................................................................................................................... 15
Digital Output(DO)................................................................................................................................................................................... 23
Button Operation......................................................................................................................................................................................24
LCD Screen .............................................................................................................................................................................................................26
Operation Mode........................................................................................................................................................................................26
Display............................................................................................................................................................................................................ 26
Event Alarms................................................................................................................................................................................................ 28
Setup Mode.................................................................................................................................................................................................29
Chapter 3 Accura 2300[S] Operation/Setup................................................................................................................... 32
Accura 2300S Display........................................................................................................................................................................................ 32
DCM Module Display..............................................................................................................................................................................32
Full-screen Display of Accura 2300S ...............................................................................................................................................33
Accura 2300[S] Setup........................................................................................................................................................................................34
DCM Module Setup.................................................................................................................................................................................34
Accura 2300[S] Event Log ...............................................................................................................................................................................34
LED/LCD Backlight....................................................................................................................................................................................34
Event Log of the DCM Module..........................................................................................................................................................34
Appendix A Specifications................................................................................................................................................. 36
Appendix B Ordering Information ................................................................................................................................... 39

Figures
Accura 2350-DCM User Guide
Page 8
ⓒ2018 Rootech Inc. All Rights Reserved
Figures
Fig 1.1 Accura 2350-DCM Components...........................................................................................................................................9
Fig 1.2 Accura 2350-DCM Front........................................................................................................................................................10
Fig 1.3 Accura 2350-DCM Rear.......................................................................................................................................................... 10
Fig 1.4 Accura 2350-DCM Side.......................................................................................................................................................... 10
Fig 1.5 Panel Mounting.......................................................................................................................................................................... 11
Fig 1.6 DIN-Rail Mounting ...................................................................................................................................................................12
Fig 1.7 Power Supply Connection..................................................................................................................................................... 12
Fig 1.8 Communication Cable Connection .................................................................................................................................. 13
Fig 2.1 Accura 2350-DCM Front........................................................................................................................................................14
Fig 2.2 Data Aggregated for 20 ms.................................................................................................................................................17
Fig 2.3 Data Aggregated for 0.5 s.................................................................................................................................................... 17
Fig 2.4 Event Block Diagram ............................................................................................................................................................... 18
Fig 2.5 Event Alarms via DOs.............................................................................................................................................................. 19
Fig 2.6 Occurrence of Over Event/Clearing Alarms (with the SET button after the event ends)...................... 21
Fig 2.5 Occurrence of Over Event/Clearing Alarms (with the SET button before the event ends).................. 21
Fig 2.8 Occurrence of Under Event/Clearing Alarms ..............................................................................................................22
Fig 2.9 Current Value below the Threshold 2 Level................................................................................................................. 22
Fig 2.10 DO Operation Linked with the Occurrence of Events..........................................................................................24
Fig 3.1 Display Screen of the DCM Module................................................................................................................................ 32
Fig 3.2 Over Event of Channel 1 .......................................................................................................................................................34
Fig 3.3 Under Event of Channel 1 .................................................................................................................................................... 34
Fig 3.4 Event Time-stamp.....................................................................................................................................................................35

Accura 2350-DCM User Guide
Chapter 1 Installation and Wiring
ⓒ2018 Rootech Inc. All Rights Reserved
Page 9
Chapter 1 Installation and Wiring
- Accura 2300[S] indicates Accura 2300 or Accura 2300S.
- DCM module is a shorthand notation for Accura 2350-DCM module.
You can connect the DCM module to Accura 2300[S] with a communication line, check the measurement
data of the DCM module, and perform device setup on the LCD screen of Accura 2300[S]. Accura 2300
and Accura 2300S have no functional differences in their operation with the DCM module. However, the
sequence of their LCD screens and display segments are slightly different.
Accura 2350-DCM-500V module can only operate with Accura 2300[S] via a communication line (linked
operation). However, Accura 2350-DCM-50V module can operate with Accura 2300[S] and can also
operate alone(stand-alone operation).
Before Installation
Components
Fig 1.1 Accura 2350-DCM Components
Accura 2350-DCM
Mounting wings L/S
Two screws
RJ12 communication line

Chapter 1 Installation and Wiring
Accura 2350-DCM User Guide
Page 10
ⓒ2018 Rootech Inc. All Rights Reserved
Dimensions
Fig 1.2 Accura 2350-DCM Front
Fig 1.3 Accura 2350-DCM Rear
Fig 1.4 Accura 2350-DCM Side

Accura 2350-DCM User Guide
Chapter 1 Installation and Wiring
ⓒ2018 Rootech Inc. All Rights Reserved
Page 11
Installation
Panel Mounting
Fig 1.5 Panel Mounting
①Place the DCM module in its intended position on the panel.
②Insert the screws into the mounting holes and tighten them.

Chapter 1 Installation and Wiring
Accura 2350-DCM User Guide
Page 12
ⓒ2018 Rootech Inc. All Rights Reserved
DIN-Rail Mounting
Fig 1.6 DIN-Rail Mounting
Power Supply Connection
The DCM module measures the voltage between the +/- bus bars and the current that flows through
the + bus bar. It is possible to use both + and - bus bars and only the + bus bar when making
connections to the power source and the load.
Fig 1.7 Power Supply Connection
<Current flows through both bus bars>
<Current flows through only + bus bar>

Accura 2350-DCM User Guide
Chapter 1 Installation and Wiring
ⓒ2018 Rootech Inc. All Rights Reserved
Page 13
Communication Cable Connection
To operate the DCM module with Accura 2300[S], connect the RJ12 communication line cable to the
RJ12A and RJ12B ports. The DCM module receives control power through the communication line cable.
When Accura 2350-DCM-50V module operates alone, it receives control power via the DC voltage
busbar.
Fig 1.8 Communication Cable Connection
Note
The power consumption of Accura 2350-DCM module is three times that of Accura 2350-3P power
measuring module. Therefore, the number of Accura 2350-DCM modules that can be connected to
Accura 2300 or Accura 2300S is limited to 10, 5 modules each connected to the RJ12-1 or RJ12-2 port.

Chapter 2 Accura 2350-DCM Operation/Setup
Accura 2350-DCM User Guide
Page 14
ⓒ2018 Rootech Inc. All Rights Reserved
Chapter 2 Accura 2350-DCM Operation/Setup
Fig 2.1 Accura 2350-DCM Front
Device Configuration and Operation
Voltage Connection and Control Power Supply
Item
Description
Voltage Connection Terminal
Terminal name 1
Source(S) +, - / Load(L) +, -
Connector type
Bus bar type
Voltage range
DC 12 –55 V
Accura 2350-DCM-50V Stand-alone operation
DC 0 –55 V
Accura 2350-DCM-50V Linked operation
DC 0 –550 V
Accura 2350-DCM-500V Linked operation
Control Power Supply
Power supply
Supplied from Accura 2300[S] with the RJ12 communication line
Bus bar 2DC 12 –55 V
Accura 2350-DCM-50V Stand-alone operation
Power consumption
125mA when connected to Accura 2300[S] with the RJ12 communication line 3
40mA @ DC 12V bus bar
Accura 2350-DCM-50V Stand-alone operation
12mA @ DC 48V bus bar
1. The power source side and the load side are indicated as S and L, respectively.
Connections should be made properly according to the indicated polarity(+/-). When the polarity is connected in
reverse, voltage and current are measured as negative values.
2. The DCM-50V module receives control power via DC busbar voltage in case of a stand-alone operation.
3. The number of DCM modules that can be connected to Accura 2300[S] is limited to 10. (5 modules connected to each
port.)

Accura 2350-DCM User Guide
Chapter 2 Accura 2350-DCM Operation/Setup
ⓒ2018 Rootech Inc. All Rights Reserved
Page 15
Measurement and Event
Specifications
Item
Description
Voltage Measurement
Sampling time
1 ms
Aggregation of
measurement data
Aggregates data every 20 ms 1based
on the data measured over 1 ms
Window aggregation:1 –32 ms
(default: 20 ms)
Aggregates data every 0.5 sec 2based on the data measured over 20 ms
Measurement accuracy
±0.5% RD + ±0.03% FS
Accura 2350-DCM-50V
FS=50V
Accura 2350-DCM-500V
FS=500V
Measuring range
(accuracy guaranteed) 3
DC 3 –50 V
Accura 2350-DCM-50V
DC 30 –500 V
Accura 2350-DCM-500V
Minimum measured value 3,
4
DC 0.2 V
Accura 2350-DCM-50V
configurable
DC 2 V
Accura 2350-DCM-500V
Maximum measured value
DC 55 V
Accura 2350-DCM-50V
DC 550 V
Accura 2350-DCM-500V
Current Measurement
Sampling time
1 ms
Aggregation of
measurement data
Aggregates data every 20 ms 1based
on the data measured over 1 ms
Window aggregation:1 –32 ms
(default: 20 ms)
Aggregates data every 0.5 sec 2based on the data measured over 20 ms
Measurement accuracy
±0.5% RD + ±0.06% FS
FS=80A
Measuring range
[accuracy guaranteed]
DC 0.8 –80 A
Minimum measured value 4
DC 0.08 A
Configurable
Maximum measured value
DC 100 A
Temperature drift 5
±0.02% FS/℃typ.
Calibration temperature: 25℃
Power / Energy Measurement
Aggregation of
measurement data
Power/Energy measurement data aggregated for 0.5 sec 2
Measurement accuracy
±1.0% RD + ±0.15% FS
Based on voltage/current measurement
accuracy
Event
Number of event channels
5 (channel 1,2,3,4,5)
Event type
Off / Over 6/ Under 7selectable
(default: Off)
Configurable for each channel
Monitored signal
Voltage / Current selectable
Configurable for each channel
Operation linked with
Digital Output
DO operation mode
Disable / Enable
Configurable for each channel

Chapter 2 Accura 2350-DCM Operation/Setup
Accura 2350-DCM User Guide
Page 16
ⓒ2018 Rootech Inc. All Rights Reserved
Time resolution
20 ms
Voltage and current measurement data1
aggregated for 20 ms
Event data
Duration time, Max/Min values
Stored in non-volatile memory
Waveform data measured over 1.5
sec (20 ms resolution)
Stored in volatile memory
1. Over/Under voltage/current events are detected based on the voltage/current data aggregated over 20 ms interval.
2. Data aggregated over 1 second are also provided. Refer to the aggregation section of Accura 2300[S] User Guide
for details.
3. The minimum DC voltage for the stand-alone operation of the DCM-50V module is 12V.
4. The measured value below the configured minimum measured value is regarded as zero.
5. Measured current values may involve errors as the temperature changes based on the calibration temperature.
6. An Over voltage/current event occurs when the measured value rises above the threshold and is maintained during
the set delay time.
7. An Under voltage/current event occurs when the measured value is above the threshold 2 value but is below the
threshold 1 value, and the value is maintained during the set delay time.

Accura 2350-DCM User Guide
Chapter 2 Accura 2350-DCM Operation/Setup
ⓒ2018 Rootech Inc. All Rights Reserved
Page 17
Sampling
Voltage and current signals are sampled every 1ms to get voltage and current data.
Data Aggregated for 20 Milliseconds
Voltage and current data are generated by dividing the data obtained every 20 ms with the
measurement resolution of 1 ms by the number of data samples. Users can set up the number of data
samples with numbers ranging from 1 to 32. The default setting is 20. Over/Under voltage and current
events are detected with the data generated every 20 ms.
Fig 2.2 Data Aggregated for 20 ms
N window
20 ms
20ms
aggregation data
1ms
sampling data
1 ms
Data Aggregated for 0.5 Seconds
Voltage and current data are generated by dividing the data obtained every 0.5 seconds with the
measurement resolution of 20ms by the number of data samples. Voltage and current data generated
every 0.5 seconds are used to generate the data aggregated over 1 second. For data aggregated over 1
second, refer to the aggregation section of Accura 2300 or Accura 2300[S] User Guide.
Fig 2.3 Data Aggregated for 0.5 s
0.5s window
0.5 s
0.5s
aggregation data
20ms
aggregation data
20 ms

Chapter 2 Accura 2350-DCM Operation/Setup
Accura 2350-DCM User Guide
Page 18
ⓒ2018 Rootech Inc. All Rights Reserved
Occurrence of Events
Fig 2.4 Event Block Diagram
under monitoring
Event N
event off 0
Type (Event N )
1
2
Voltage
Threshold1 (Event N )
Current
Signal (Event N )
Threshold2 (Event N )
Time delay (Event N )
0
1
x
x ≥Threshold 1
x ≤Threshold 1
x ≥Threshold 2
over monitoring
Event Block per Channel
N=1,2,..,5
DO_enable (Event N )
Event N DO
The event block for a channel is shown in Figure 2.4 and the DCM module supports five-channel event
blocks.
Select voltage or current as an input signal, and select Over or Under as an event type. Voltage/Current
data to be monitored are data generated by dividing the data obtained every 20 ms with the
measurement resolution of 1 ms by the number of data samples. An event is divided into a start event
and an end event. Detailed descriptions of events are shown in the table below.
Item
Description
Event type
Off / Over / Under
Monitored
signal
Choose voltage or current.
Start level
Configures the threshold 1 level for detection of the start of an event
Residual level
The threshold 2 level is available only for detection of Under event. An Under event occurs when
the measured value is above the threshold 2 value but is below the threshold 1 value, and the
value is maintained during the set delay time.
Hysteresis
If the measured value frequently rises above or falls below the threshold value, many events may
occur. Therefore, it is necessary to set a proper hysteresis value for effective event management.
Setting the hysteresis value is not supported on the LCD screen of the DCM module. It is
possible to set the value only via communication. The default value is 2%.
End level
In case of Over event, the end level is determined by subtracting the hysteresis from the
threshold 1 value. In case of Under event, the end level is determined by adding the hysteresis to
the threshold 1 value.
Time delay
When the measured value rises above the threshold value, and the set delay time elapses, a start
event occurs. If the measured value exceeds the threshold value but is not maintained during the
set delay time, a start event does not occur.
DO operation
When a start event occurs, a command can be issued to a DO channel, and the feature can be
set to Disable/Enable.
Start event
When the measured value rises above the threshold value, and the set delay time elapses, a start
event occurs. The start event occurs again after an event ends and the measured value exceeds
the threshold value again. When a start event occurs, the event LED blinks. If DO channels are

Accura 2350-DCM User Guide
Chapter 2 Accura 2350-DCM Operation/Setup
ⓒ2018 Rootech Inc. All Rights Reserved
Page 19
configured to operate when an event occurs, commands are issued to the DO channels.
End event
An end event occurs when the measured value falls back to the threshold value set for detection
of an end event after a start event occurs. monitoring signal is recovered within the end level
with the start event occurring,. The event LED is not turned off only when users press the SET
button. If DO channels are configured to operate when an event occurs, users can reset DOs with
the SET button.
Generation of Event Alarms
Event alarms are provided to notify users of the occurrence of events. When an event occurs, the event
LED and the LCD screen indicating event data blink. Alarms can also be generated via DO contacts.
Alarm settings can be configured for each DO channel, and the setting is disabled by default.
Event Alarm
Description
Operation
Event LED
Blinks every 0.2 sec
Basic event alarm
LCD screen
Event type Indication Character blinking every 0.4 second
Basic event alarm
Digital output
Outputs alarms via contacts (latch or pulse configurable)
Operation enabled via settings
Fig 2.5 Event Alarms via DOs
Event 1 DO
Event 2 DO
Event 3 DO
Event 4 DO
Event 5 DO
Event DO

Chapter 2 Accura 2350-DCM Operation/Setup
Accura 2350-DCM User Guide
Page 20
ⓒ2018 Rootech Inc. All Rights Reserved
Clearing Event Alarm
If the user long presses the SET button, an event alarm is cleared. When the event alarm is cleared, the
screen returns to the display mode, the event LED turns off, and the linked digital output contact is also
cleared.
Note
To clear the event alarm, press EVENT button on Accura 2300[S]. If you confirm the event log with
EVENT button of Accura 2300[S], event alarm of Accura 2300[S] and event alarm of DCM module are
also cleared. However, releasing the event alarm with the SET button of DCM module clears only the
event alarm of DCM module, but does not clear the event alarm of Accra 2300[S].
Auto Clearing Event Alarms
The auto clear function of event alarms is disabled by default and can be set with numbers indicating
the minute from 1 to 999 minutes. After an event alarm occurs and the auto clear time elapses, the
alarm is automatically cleared.