netvox R718N3D Wireless Three-Phase Current Detection User Manual

netvox R718N3D Wireless Three-Phase Current Detection

Product Information

Specifications

• Product Name: R718N3xxxD(E) Series Wireless Three-Phase Current Detection
• Wireless Technology: LoRa
• Power Supply: DC 3.3V/1A
• IP Rating: IP30
• Compatibility: LoRaWAN Class C

FAQ

• Q: Can the device be used for single-phase current detection?
  • A: No, the R718N3xxxD(E) Series is specifically designed for three-phase current detection.
• Q: How can I configure alarm thresholds for the device?
  • A: You can set or get sensor alarm thresholds using the Set/GetSensorAlarmThresholdCmd command as outlined in the user manual.

Introduction

The R718N3xxxD/DE series is 3-Phase Current Meter device for Netvox Class C type devices based on the LoRaWAN open protocol and is compatible with the LoRaWAN protocol. R718N3xxxD/DE series have different measuring range for different variety of CT. It is divided into:

• R718N3D Wireless 3-Phase Current Meter with 3 x 60A Solid Core CT (undetachable cable)
• R718N33D Wireless 3-Phase Current Meter with 3 x 30A Clamp-On CT (undetachable cable)
• R718N37D Wireless 3-Phase Current Meter with 3 x 75A Clamp-On CT (undetachable cable)
• R718N315D Wireless 3-Phase Current Meter with 3 x 150A Clamp-On CT (undetachable cable)
• R718N325D Wireless 3-Phase Current Meter with 3 x 250A Clamp-On CT (undetachable cable)
• R718N363D Wireless 3-Phase Current Meter with 3 x 630A Clamp-On CT (undetachable cable)
• R718N3300D Wireless 3-Phase Current Meter with 3 x 3000A Clamp-On CT (detachable cable)
• R718N3DE Wireless 3-Phase Current Meter with 3 x 60A Solid Core CT (detachable cable)
• R718N33DE Wireless 3-Phase Current Meter with 3 x 30A Clamp-On CT (detachable cable)
• R718N37DE Wireless 3-Phase Current Meter with 3 x 75A Clamp-On CT (detachable cable)
• R718N315DE Wireless 3-Phase Current Meter with 3 x 150A Clamp-On CT (detachable cable)
• R718N325DE Wireless 3-Phase Current Meter with 3 x 250A Clamp-On CT (detachable cable)
• R718N363DE Wireless 3-Phase Current Meter with 3 x 630A Clamp-On CT (detachable cable)

LoRa Wireless Technology:

LoRa is a wireless communication technology famous for its long-distance transmission and low power consumption. Compared with other communication methods, LoRa spread spectrum modulation technique greatly extend the communication distance. It can be widely used in any use case that requires long-distance and low-data wireless communications. For example, automatic meter reading, building automation equipment, wireless security systems, industrial monitoring. It has features like small size, low power consumption, long transmission distance, strong anti-interference ability and so on.

LoRaWAN:

LoRaWAN uses LoRa technology to define end-to-end standard specifications to ensure interoperability between devices and gateways from different manufacturers.

Appearance

Features

• Adopt SX1276 wireless communication module.
• DC power supply (3.3V/1A)
• 3-phase current meter detection
• The base is attached with a magnet that can be attached to a ferromagnetic material object.
• IP30 rating
• LoRaWANTM Class C compatible
• Frequency Hopping Spread Spectrum (FHSS)
• Configuring parameters and reading data via third-party software platforms, and set alarms via SMS text and email (optional)
• Available third-party platform: Actility/ThingPark, TTN, MyDevices/Cayenne

Set up Instruction

On/Off

green indicator flashes 20 times.
Power Off| Disconnecting the power supply
Note| 1.   The device will be off in default after disconnecting the power supply.

2.   It is suggested to wait for at least 10 seconds between turning the device on and off.

3.  At 1st -5th second after power on, the device will be in engineering test mode.

Network Joining

Never Joined the Network| Turn on the device, and it will search for the network to join. The green indicator remains on joins the network successfully

The green indicator light remains off: fail to join the network

---|---

Had Joined the Network

(Not Back to Factory Setting)

| Turn on the device, and it will search for the previous network to join. The green indicator remains on: joins the network successfully

The green indicator light remains off: fail to join the network

Fail To Join the Network| Check the device verification information on the gateway or consult your platform server provider.

Function Key

Press the Function Key for 5 Seconds

| The device will be set to default and restart.

The green indicator light flashes 20 times: success The green indicator light remains off: fail

---|---

Press the Function Key Once

| The device is in the network: green indicator light flashes once and sends a report

The device is not in the network: green indicator light flashes 3 times

Sleeping Mode

The Device is Turned On and In the Network| Sleep period: Min Interval.

When the reportchange exceeds setting value or the state changes: send a data report according to Min Interval.

---|---

Data Report

The device will immediately send a version packet report along with two uplink packets including 3 current, 3 multiplier and battery voltage.
The device sends data in the default configuration before any configuration is done.

Default setting:

• Max Interval: 0x0384 (900s)
• Min Interval: 0x0002 (2s) (detect per Min Interval)
• CurrentChange: 0x0064 (100 mA)

Note:

• The device report interval will be programmed based on the default firmware which may vary.
• R718N3xxxD default Max Interval = 900s, Min Interval = 2s. (could be customized)

3-Phase Current Detection:

• Push the function key to send report and back to 3-phase current data.
• While configuring, the device would detect and back to current data.

Range and Accuracy

• R718N3D(E): Solid Core CT / Range: 100mA~50A（Accuracy: ±1% (300mA~50A)）
• R718N37D(E): Clamp-On CT / Range: 100mA~75A（Accuracy: ±1%(300mA~75A)）
• R718N315D(E): Clamp-On CT / Range: 1A—150A (±1%)
• R718N325D(E): Clamp-On CT / Range: 1A—250A (±1%)
• R718N363D(E): Clamp-On CT / Range: 10A—630A (±1%)
• R718N3300D: Clamp-On CT / Range: 150A—3000A (±1%)

Note:

• When the current of the device that is 75A or below is less than 100mA, the current is reported as 0.
• When the current of the device that is above 75A is less than 1A, the current is reported as 0.

Please refer Netvox LoRaWAN Application Command document and Netvox Lora Command Resolver http://www.netvox.com.cn:8888/cmddoc to resolve uplink data.

Data report configuration and sending period are as follows:

Min Interval

(Unit: second)

| Max Interval

(Unit: second)

| Reportable Change| Current Change ≥

Reportable Change

| Current Change＜

Reportable Change

---|---|---|---|---
Any number between

2 to 65535

| Any number between

2 to 65535

| Can not be 0| Report

per Min Interval

| Report

per Max Interval

Example of ReportDataCmd

FPort： 0x06

• Version– 1 byte –0x01——the Version of NetvoxLoRaWAN Application Command Version
• DeviceType– 1 byte – Device Type of Device
  • The device type is listed in Netvox LoRaWAN Application Devicetype .doc
• ReportType – 1 byte –the presentation of the NetvoxPayLoadData, according the device type
• NetvoxPayLoadData– Var (Fix =8bytes)

Tips

1. Battery Voltage:
   • If the battery is equal to 0x00, it means that the device is powered by a DC power supply.
2. Version Packet:
   • When Report Type=0x00 is the version packet, such as 014A000A02202306080000, the firmware version is 2023.06.08.
3. Data Packet:
   • When Report Type=0x01 is data packet; If the device data exceeds 11 bytes or there are shared data packets, the Report Type will have different values.

R718N3 XXXD

Series

| 0x4A| 0x00| SoftwareVersion(1 Byte)

Eg.0x0A-V1.0

| HardwareVersion

(1 Byte)

| DateCode(4 Byte)

eg 0x20170503

| Reserved

(2 Byte)

0x01| Battery

(1Byte, unit:0.1V)

| Current1

(2Bytes,Unit:1mA)

| Current2

(2Bytes,Unit:1mA)

| Current3

(2Bytes,Unit:1A)

| Mulitplier1

(1Byte)

0x02| Battery

(1Byte, unit:0.1V)

| Mulitplier2

(1Byte)

| Mulitplier3

(1Byte)

| Reserved

(5Bytes,fixed 0x00)

The real current should convert with Current Multiplier

The format of two packets (ReportType=0x01 & 0x02)

Default uplink Report type as 0x01 and 0x02 packet (configured by commands for one packet)

Example of Uplink: 014A010005DD05D405DE01

• 1st byte (01): Version
• 2nd byte (4A): DeviceType 0x4A R718N3XXXD
• 3rd byte (01): ReportType
• 4th byte (00): 3.3 V DC power supply
• 5th 6th byte (05DD): Current1 – 05DD (Hex) = 1501 (Dec), 15011mA=1501mA //The real Current1=Current1Mulitplier1
• 7th 8th byte (05D4): Current2 – 05D4 (Hex) = 1492 (Dec), 14921mA=1492mA //The real Current2=Current2Mulitplier2
• 9th 10th byte (05DE): Current3 – 05DE (Hex) = 1502 (Dec), 15021mA=1502mA //The real Current3=Current3Mulitplier3
• 11th byte (01): Multiplier1

Example of Uplink2: 014A020001010000000000

• 1st byte (01): Version
• 2nd byte (4A): DeviceType 0x4A R718N3XXXD
• 3rd byte (01): ReportType
• 4th byte (00): 3.3 V DC power supply
• 5th byte (01): Multiplier2
• 6th byte (01): Multiplier3
• 7th -11th byte (0000000000): Reserved

The format of one packet (ReportType=0x03)

Example of Uplink3: 014A030005C705D405F000

• 1st byte (01): Version
• 2nd byte (4A): DeviceType 0x4A R718N3XXXD
• 3rd byte (03): ReportType
• 4th byte (00): 3.3 V DC power supply
• 5th 6th byte (05C7): Current1 05C7 (Hex) = 1479 (Dec), 14791mA=1479mA // The real Current1=Current1Mulitplier1
• 7th 8byte (05D4): Current2 05D4 (Hex) =1492 (Dec), 14921mA=1492mA // The real Current2=Current2Mulitplier2
• 9th 10th byte (05F0): Current3 05F0 (Hex) =1520 (Dec), 15201mA=1520mA // The real Current3=Current3Mulitplier3
• 11th byte (00): Multiplier // Multiplier1 = Multiplier2 = Multiplier3 =1

Example of Uplink4: 014A040001000000000000

• 1st byte (01): Version
• 2nd byte (4A): DeviceType 0x4A R718N3XXXD
• 3rd byte (03): ReportType
• 4th byte (00): 3.3 V DC power supply
• 5th byte (01): ThresholdAlarm – LowCurrent1Alarm (bit0 =1)
• 6th-11th byte (000000000000): Reserved

Example of ConfigureCmd

FPort： 0x07

• CmdID– 1 byte
• DeviceType– 1 byte – Device Type of Device
• NetvoxPayLoadData– var bytes (Max=9bytes)

Description| Device| Cmd ID| Device Type| NetvoxPayLoadData
---|---|---|---|---
Config

ReportReq

| R718N3 XXXD

Series

|

0x01

|

0x4A

| MinTime

(2bytes Unit:s)

| MaxTime

(2bytes Unit:s)

| CurrentChange

(2byte Unit:1mA)

| Reserved

(2Bytes,Fixed0x00)

Config

ReportRsp

|

0x81

| Status(0x00_success)| Reserved (8Bytes,Fixed 0x00)
ReadConfig

ReportReq

|

0x02

| Reserved

(9Bytes,Fixed 0x00)

ReadConfig

ReportRsp

|

0x82

| MinTime

(2bytes Unit:s)

| MaxTime

(2bytes Unit:s)

| CurrentChange

(2byte Unit:1mA)

| Reserved

(2Bytes,Fixed 0x00)

1. Configure R718N3XXXD Series report parameters:
   • MinTime = 1min (0x003C), MaxTime = 1min (0x003c), CurrentChange = 100 mA (0x0064)
   • Downlink: 014A003C003C0064000000
   • Response: 814A000000000000000000 (Configuration success)
   • 814A010000000000000000 (Configuration failure)
2. Read Configuration:
   • Downlink: 024A000000000000000000
   • Response: 824A003C003C0064000000 (Current configuration)

Example of SetRportType

Description| Device| CmdID| Device Type| NetvoxPayLoadData
---|---|---|---|---
SetRportTypeReq (REMAIN Lastconfig when resettofac)| R718 N3XXX

D Series

| ****

0x03

| ****

0x4A

| ReportTypeSet (1Byte,0x00_reporttype1&2,

0x01_reporttype3)

| Reserved (8Bytes,Fixed 0x00)
SetRportTypeRsp

(REMAIN Lastconfig when resettofac)

| ****

0x83

| Status(0x00_success)| Reserved (8Bytes,Fixed 0x00)
GetRportTypeReq| ****

0x04

| Reserved

**** (9Bytes,Fixed 0x00)

GetRportTypeRsp| ****

0x84

| ReportTypeSet (1Byte,0x00_reporttype1&2,

0x01_reporttype3)

| Reserved (8Bytes,Fixed 0x00)

• (3) Configure ReportType =0x01
  • Downlink: 014A010000000000000000
  • Response: 834A000000000000000000 (Configuration success)
  • 834A010000000000000000 (Configuration failure)
• (4) Read device configuration parameters.
  • Downlink: 044A000000000000000000
  • Response: 844A010000000000000000 (Current device configuration parameters)

Set/GetSensorAlarmThresholdCmd

Fport: 0x10

CmdDescriptor| CmdID

(1Byte)

| Payload (10Bytes)
---|---|---
SetSensorAlarm ThresholdReq| 0x01|

Channel(1Byte, 0x00_Channel1, 0x01_Chanel2, 0x02_Channel3,etc)

|

SensorType(1Byte, 0x00_Disable ALL SensorthresholdSet 0x27_Current,

| SensorHighThreshold (4Bytes,Unit:same as reportdata in fport6, 0Xffffffff_DISALBLE

HighThreshold)

| SensorLowThreshold (4Bytes,Unit:same as reportdata in fport6, 0Xffffffff_DISALBLE

HighThreshold)

SetSensorAlarm

ThresholdRsp

| 0x81| Status

(0x00_success)

| Reserved

(9Bytes,Fixed 0x00)

GetSensorAlarm ThresholdReq| 0x02| Channel(1Byte, 0x00_Channel1, 0x01_Chanel2,

0x02_Channel3,etc)

| SensorType (1Byte,Same as the SetSensorAlarmThresholdReq’s SensorType)| Reserved (8Bytes,Fixed 0x00)
GetSensorAlarm ThresholdRsp| 0x82|

Channel(1Byte, 0x00_Channel1, 0x01_Chanel2, 0x02_Channel3,etc)

| SensorType (1Byte,Same as the SetSensorAlarmThresh oldReq’s SensorType)| SensorHighThreshold (4Bytes,Unit:same as reportdata in fport6, 0Xffffffff_DISALBLE

HighThreshold)

| SensorLowThreshold (4Bytes,Unit:same as reportdata in fport6, 0Xffffffff_DISALBLE

HighThreshold)

Channel – 1byte

0x00 Current1, 0x01 Current2, 0x02_ Current3 // When restoring factory settings, the last set value will be retained.

1. SetSensorAlarmThresholdReq: (Set Current HighThresholdt to 500mA; LowThreshold to 100mA )
   • Downlink: 010027000001F400000064 //1F4 (Hex) = 500 (Dec), 500* 1mA = 500mA;
   • 64 (Hex) = 100 (Dec), 64* 1mA = 64mA
   • Response: 8100000000000000000000
2. GetSensorAlarmThresholdReq:
   • Downlink: 0200270000000000000000
   • Response: 820027000001F400000064
3. Disable all sensor thresholds. (Configure the Sensor Type to 0)
   • Downlink: 0100000000000000000000
   • Response: 8100000000000000000000

Installation

1. The 3-phase current meter R718N3XXXD(E) has a built-in magnet (see Figure 1 below). It can be attached to the surface of an object with iron during installation, which is convenient and quick.
   • To make the installation more secure, please use screws (purchased separately) to fix the device to the wall or other objects (such as the installation diagram).
   • Note: Do not install the device in a metal shielded box or in an environment surrounded by other electrical equipment to avoid affecting the wireless transmission of the device.
2. Open the clamp-on current transformer, and then pass the live wire through the current transformer according to the installation.
   • Note: “L←K” is marked on the bottom of the CT.
3. Precautions:
   • Before using, user must check whether the appearance is deformed; otherwise, the test accuracy will be affected.
   • The using environment should be kept away from strong magnetic fields, so as not to affect the test accuracy. It is strictly forbidden to use in humid and corrosive gas environments.
   • Before installation, please confirm the current value of the load. If the current value of the load is higher than the measurement range, select a model with a higher measurement range.
4. The 3-phase current meter R718N3XXXD(E) samples the current according to MinTime. If the current value sampled this time relatively exceeds the set value (the default is 100mA) more than the current value reported last time, the device will immediately report the current value sampled this time. If the current variation does not exceed the default value, the data will be reported regularly according to MaxTime.
5. Press the function key of the device to start sampling data and report the data after 3 to 5 seconds.
   • Note: MaxTime must be set greater than Min Time.

The three-phase current detector R718N3XXXD(E) is suitable for the following scenarios:

• School
• Factory
• Shopping mall
• Office building
• Smart building

Where the electrical data of the device with the three-phase electricity needs to be detected.

Installation Diagram

Important Maintenance Instruction

Kindly pay attention to the following in order to achieve the best maintenance of the product:

• Keep the device dry. Rain, moisture, or any liquid might contain minerals and thus corrode electronic circuits. If the device gets wet, please dry it completely.
• Do not use or store the device in dusty or dirty environment. It might damage its detachable parts and electronic components.
• Do not store the device under excessive hot condition. High temperature can shorten the life of electronic devices, destroy batteries, and deform or melt some plastic parts.
• Do not store the device in places that are too cold. Otherwise, when the temperature rises to normal temperature, moisture will form inside, which will destroy the board.
• Do not throw, knock or shake the device. Rough handling of device can destroy internal circuit boards and delicate structures.
• Do not clean the device with strong chemicals, detergents or strong detergents.
• Do not apply the device with paint. Smudges might block in the device and affect the operation.

All of the above applies to your device, battery and accessories.
If any device is not working properly, please take it to the nearest authorized service facility for repair.

Copyright©Netvox Technology Co., Ltd.

This document contains proprietary technical information which is the property of NETVOX Technology. It shall be maintained in strict confidence and shall not be disclosed to other parties, in whole or in part, without written permission of NETVOX Technology. The specifications are subject to change without prior notice.

References

• Netvox LoRaWAN Application Command

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