ROOTECH Accura 2350-DCM User guide

Brand: ROOTECH

Model: Accura 2350-DCM

Type: User guide

Notice

Accura 2350-DCM User Guide

Page 2

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

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

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

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

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

1.23

April 19, 2022

Specified the reference value of the hysteresis value(%)

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

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

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

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

Page 11

Installation

Panel Mounting

Fig 1.5 Panel Mounting

① Place the DCM module in its intended position on the panel.

② Insert the screws into the mounting holes and tighten them.

Chapter 1 Installation and Wiring

Accura 2350-DCM User Guide

Page 12

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

Accura 2350-DCM User Guide

Chapter 1 Installation and Wiring

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

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 2 DC 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

Page 15

Measurement and Event

Specifications

Item

Description

Voltage Measurement

Sampling time

1 ms

Aggregation of

measurement data

Aggregates data every 20 ms 1 based

on the data measured over 1 ms

Window aggregation:1 – 32 ms

(default: 20 ms)

Aggregates data every 0.5 sec 2 based on the data measured over 20 ms

Measurement accuracy

±0.5 % Reading + ±0.03 % Un 3

Measuring range

(accuracy guaranteed) 4

DC 3 – 50 V

Accura 2350-DCM-50V

DC 30 – 500 V

Accura 2350-DCM-500V

Minimum measured value,

4,5

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 1 based

on the data measured over 1 ms

Window aggregation:1 – 32 ms

(default: 20 ms)

Aggregates data every 0.5 sec 2 based on the data measured over 20 ms

Measurement accuracy

±0.5 % Reading + ±0.06 % Ib 6

Measuring range

(accuracy guaranteed)

DC 0.8 – 80 A

Minimum measured value 5

DC 0.08 A

Configurable

Maximum measured value

DC 100 A

Temperature drift 7

±0.02% FS/℃ typ.

Calibration temperature: 25℃

FS=100℃

Power / Energy Measurement

Aggregation of

measurement data

Power/Energy measurement data aggregated for 0.5 sec 2

Measurement accuracy

±1.0 % Reading + ±0.15 % Un*Ib

Based on voltage/current measurement

accuracy

Event

Number of event channels

5 (channel 1,2,3,4,5)

Event type

Off / Over 8 / Under 9 selectable

(default: Off)

Configurable for each channel

Monitored signal

Voltage / Current selectable

Configurable for each channel

Operation linked with

Digital Output

DO operation mode when an event

occurs

Disable / Enable

Configurable for each channel

Chapter 2 Accura 2350-DCM Operation/Setup

Accura 2350-DCM User Guide

Page 16

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. In addition to the data obtained at 0.5-second aggregation intervals, the data aggregated over 1 second are also

provided. Refer to the aggregation section of Accura 2300[S] User Guide for details.

3. The rated voltages(Un) of the DCM-50V and the DCM-500V modules are 50 V and 500 V, respectively.

4. The minimum DC voltage for the stand-alone operation of the DCM-50V module is 12V.

5. The measured value below the configured minimum measured value is regarded as zero.

6. The rated current(Ib) of the DCM-50V and the DCM-500V modules is 80 A.

7. Measured current values may involve errors as the temperature changes based on the calibration temperature.

8. An Over-voltage/current event occurs when the measured value rises above the threshold and is maintained during

the set delay time.

9. 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

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

Occurrence of Events

Fig 2.4 Event Block Diagram

under monitoring

Event N

event off 0

Type (Event N )

Voltage

Threshold1 (Event N )

Current

Signal (Event N )

Threshold2 (Event N )

Time delay (Event N )

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 % of the rated voltage.

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

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

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.

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ROOTECH Accura 2350-DCM User guide

Brand: ROOTECH

Model: Accura 2350-DCM

Type: User guide

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