GitHub - Milesight-IoT/SensorDecoders: Payload Codec for Milesight Sensors
User Guide for Milesight models including: CT3xx Smart Current Transformer, CT3xx, Smart Current Transformer, Current Transformer, Transformer
CT305 Transformateur Intelligent Milesight - Solution Énergétique LoRaWAN
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DocumentDocumentSmart Current Transformer Featuring LoRaWAN® CT3xx User Guide Safety Precautions Milesight will not shoulder responsibility for any losses or damages resulting from not following the instructions of this operating guide. The device must not be modified in any way. The installation and maintenance must be conducted by a qualified service person and should strictly comply with the electrical safety regulations of the local region. Do not overload the maximum capacity to avoid damage to the device. The device is intended only for indoor use. Do not place the device where the temperature is below/above the operating range. Do not place the device close to objects with naked flames, heat source (oven or sunlight), cold source, liquid and extreme temperature changes. Keep the device away from water to prevent electric shock. Use the device opening clean and free of dust before installation. Dusty or dirty environments may prevent the proper operation of this device. Do not drop the device or subject it to physical shocks and strong vibration. Declaration of Conformity CT3xx is in conformity with the essential requirements and other relevant provisions of the CE, FCC, and RoHS. Copyright © 2011-2024 Milesight. All rights reserved. All information in this guide is protected by copyright law. Whereby, no organization or individual shall copy or reproduce the whole or part of this user guide by any means without written authorization from Xiamen Milesight IoT Co., Ltd. For assistance, please contact Milesight technical support: Email: iot.support@milesight.com Tel: 86-592-5085280 Fax: 86-592-5023065 Address: Building C09, Software Park III, Xiamen 361024, China 2 Revision History Date Jun 6, 2024 Doc Version Description V1.0 Initial version 3 Contents 1. Product Introduction ......................................................................................................................... 5 1.1 Overview ...................................................................................................................................5 1.2 Features ................................................................................................................................... 5 2. Hardware Introduction ...................................................................................................................... 5 2.1 Packing List ..............................................................................................................................5 2.2 Hardware Overview ................................................................................................................. 6 2.3 Button and LED Indicator ........................................................................................................ 6 2.4 Dimensions (mm) .................................................................................................................... 6 3. Operation Guide .................................................................................................................................7 3.1 USB Configuration ................................................................................................................... 7 3.2 LoRaWAN Settings .................................................................................................................. 8 3.3 General & Alarm Settings ......................................................................................................11 3.4 Maintenance .......................................................................................................................... 12 3.4.1 Upgrade ....................................................................................................................... 12 3.4.2 Backup .........................................................................................................................13 3.4.3 Reset and Reboot ....................................................................................................... 13 4. Installation ....................................................................................................................................... 14 4.1 Device Assembly ................................................................................................................... 14 4.2 Antenna Installation .............................................................................................................. 14 4.3 Transformer Installation ....................................................................................................... 15 4.4 Transceiver Installation .........................................................................................................16 4.5 Cable Temperature Sensor Installation (Alternative) ......................................................... 16 5. Communication Protocol ................................................................................................................17 5.1 Basic Information .................................................................................................................. 17 5.2 Sensor Data ........................................................................................................................... 18 5.3 Downlink Commands ............................................................................................................ 19 4 1. Product Introduction 1.1 Overview CT3xx is a LoRaWAN® Smart Current Transformer for monitoring energy consumption and analyzing usage remotely. CT3xx provides multiple current options to suit energy monitoring and supports sending threshold alarms. Its compact size enables quick and safe installation in any indoor space without de-energizing facilities, thereby simplifying the installation and saving costs. Compliant with Milesight LoRaWAN® gateway and Milesight Development Platform solution, CT3xx can be conveniently monitored via webpage remotely. CT3xx is widely used for energy motoring of smart buildings, machine failure detection and prevention, etc. 1.2 Features Report the RMS current and accumulated current data by minutes High measuring accuracy with a sampling frequency of up to 3.3 kHz Self-powered, free from batteries or external wires Utilize a sampling rate of up to 1s for real-time monitoring and quick alarm response Non-invasive clamp design ensures easy and safe installation without the need for power de-energizing Equipped with LED indicator to indicate working status and alarms Support external wire temperature sensor for cable temperature measurement Enable simultaneous detection of three phases with a significantly wide optional detection range of either 500A or 1000A Compliant with standard LoRaWAN® gateways and network servers Compliant with Milesight Development Platform 2. Hardware Introduction 2.1 Packing List 1 × CT3xx Current Transformer 1 × LoRaWAN® Stubby Antenna 1 x Cable Temperature Sensor (1m) 5 1 × LoRaWAN® Magnetic Antenna (Optional) 1 × Warranty Card 1 × Quick Guide If any of the above items is missing or damaged, please contact your sales representative. 2.2 Hardware Overview 2.3 Button and LED Indicator Function Normal Work Low Power Mode Low Voltage Mode Alarm Reboot Action LED Indicator The device is functioning properly. Blinking every 2s The device measures and reports at reduced Blinking every 5s rate. The device only measures at reduced rate. Blinking every 10s The current is over the threshold or measuring range, or the temperature is over the threshold. Fast Blinking Quick press the RST button once. Blinking Once 2.4 Dimensions (mm) 6 CT305 CT310 3. Operation Guide 3.1 USB Configuration CT3xx can be powered and configured via a Type-C port for configuration and debug. 1. Download ToolBox software from Milesight website. 2. Connect the device to a computer via the Type-C port. 7 3. Open the ToolBox and select type as General, then click password to log into the ToolBox. (Default password: 123456) 4. After logging into the ToolBox, you can check device status and change device settings. 3.2 LoRaWAN Settings LoRaWAN settings are used to configure the data transmission parameters in the LoRaWAN® network. Basic LoRaWAN Settings: CT3xx supports basic configurations like join type, App EUI, App Key, and other information. You can also keep all settings by default. 8 Parameters Device EUI App EUI Application Port Join Type Application Key Device Address Network Session Key Application Session Key RX2 Data Rate RX2 Frequency/MHz Spread Factor Confirmed Mode Description Unique ID of the device which can also be found on the label. Default App EUI is 24E124C0002A0001. The port used for sending and receiving data, default port is 85. OTAA and ABP modes are available. Appkey for OTAA mode, default is 5572404C696E6B4C6F52613230313823. DevAddr for ABP mode, default is the 5th to 12th digits of SN. Nwkskey for ABP mode, default is 5572404C696E6B4C6F52613230313823. Appskey for ABP mode, default is 5572404C696E6B4C6F52613230313823. RX2 data rate to receive downlinks. RX2 frequency to receive downlinks. If ADR is disabled, the device will send data via this spread factor. If the device does not receive the ACK packet from network server, it will resend data once. 9 Reporting interval 35 mins: the device will send a specific number of LinkCheckReq MAC packets to the network server every reporting interval or every double reporting interval to validate connectivity; If there is no response, the device will re-join the network. Rejoin Mode Reporting interval > 35 mins: the device will send a specific number of LinkCheckReq MAC packets to the network server every reporting interval to validate connectivity; If there is no response, the device will re-join the network. Note: Only OTAA mode supports rejoin mode. Set the number of When rejoin mode is enabled, set the number of LinkCheckReq packets sent. packets sent Note: the actual sending number is Set the number of packets sent + 1. ADR Mode Allow the network server to adjust the data rate of the device. Tx Power Transmit power of the device. Note: 1) Please contact your sales representative for the device EUI list if there are many units. 2) Please contact your sales representative if you need random App keys before purchase. 3) Select OTAA mode if you use Milesight IoT Cloud to manage devices. LoRaWAN Frequency Settings: Select supported frequency and channels to send uplinks. Make sure the channels match the LoRaWAN® gateway. 10 If the device frequency is one of CN470/AU915/US915, you can enter the index of the channel that you want to enable in the input box, making them separated by commas. Examples: 1, 40: Enabling Channel 1 and Channel 40 1-40: Enabling Channel 1 to Channel 40 1-40, 60: Enabling Channel 1 to Channel 40 and Channel 60 All: Enabling all channels Null: Indicates that all channels are disabled 3.3 General & Alarm Settings Parameters Description The interval of reporting current data. Default: 10 mins, Range: 1 - 1440 mins Reporting Interval Note: when the device is under low power mode, the interval is fixed as 30 minutes; when the device is under low voltage mode, the device will stop reporting. The working mode can be judged by LED indicator. Change Password Change the password of the device for ToolBox configuration. 11 Parameters Description The interval to report alarm packet after alarm triggers. This Alarm Reporting Interval (min) interval should be less than reporting interval. Alarm Reporting Times Alarm packet report times after alarm triggers. Current Threshold (Phase x) Excessive Current Threshold The maximum current threshold value. Insufficient Current Threshold The minimum current threshold value. Temperature Over The maximum temperature threshold value. Below The maximum temperature threshold value. Note: Current overrange alarm is fixed as enabled, the alarm reporting interval is fixed as 5 minutes and the alarm reporting time is fixed as 3. 3.4 Maintenance 3.4.1 Upgrade 1. Download firmware from Milesight website to your PC. 2. Go to Maintenance > Upgrade, click Browse to import firmware and click Upgrade to upgrade the device. 12 3.4.2 Backup CT3xx supports configuration backup for easy and quick device configuration in bulk. Backup is allowed only for devices with the same model and LoRaWAN® frequency band. 1. Go to Maintenance > Backup and Reset, and click Export to backup the device configuration. 2. Click Browse to import the backup file, then click Import to load the configuration. 3.4.3 Reset and Reboot Reset to Factory Default: Go to Maintenance > Backup and Reset of ToolBox, and click Reset to complete. 13 Reboot: Quick press the RST button once or send downlink command to reboot. 4. Installation 4.1 Device Assembly The CTs can be connected to the connectors of transceiver without any specific order matching requirement. 4.2 Antenna Installation Rotate the antenna into the antenna connector. The antenna should be installed vertically and kept away from metal objects and obstacles. Note: Keep the device away from metal objects, obstacles, or the environment surrounded by other electrical equipment that may cause interference. If necessary, please select a magnetic antenna. 14 4.3 Transformer Installation Open the current transformer to clip it around a single-phase wire. Then close the clip with a slight "click" sound to make sure the clip firmly grips the wire. Note: 1) Do not place Phase wire and Neutral wire within a single current transformer. 2) Please make sure at least connect a phase A CT to phase A wire, otherwise the device will be powered off. 15 4.4 Transceiver Installation The transceiver can be put or hang in any suitable position or to be fixed via cable-ties. 4.5 Cable Temperature Sensor Installation (Alternative) CT3xx can monitor the temperature of one wire through the Cable Temperature Sensor, it will alarm when the temperature exceeds the threshold. Pass the Cable Temperature Sensor around the tested wire, and then tighten the buckle. The other end is connected to the CT3xx device via the USB Type-C . 16 NoteKeep the Cable Temperature Sensor as close to the wire connector as possible to better detect the temperature. 5. Communication Protocol All data are based on the following format (HEX), the Data field should follow little endian: Channel1 Type1 Data1 Channel2 Type2 Data2 Channel 3 ... 1 Byte 1 Byte N Bytes 1 Byte 1 Byte M Bytes 1 Byte ... For decoder examples you can find at https://github.com/Milesight-IoT/SensorDecoders. 5.1 Basic Information CT3xx reports basic information of the device whenever it joins the network. Channel Type Byte Description 01(Protocol Version) 1 01=>V1 09 (Hardware Version) 2 02 10=>V2.1 0a(Software Version) 2 01 01=>V1.1 ff ff(TSL Version) 2 01 01=>V1.1 0b (Power On) 1 Device is on 0f(Device Type) 1 00 = Class A, 01 = Class B, 02 = Class C 16 (Device SN 8 16 digits Example: ff0bff ff0101 ffff0101 ff166746d48016300014 ff090110 ff0a0101 ff0f00 Channel ff Channel Type 0b (Power On) Type ff ff (TSL Version) Value ff (Reserved) Value 0101 (V1.1) Channel ff Channel ff Type 01 (Protocol Version) Type 16 (Device SN) Value 01 (V1) Value 6746d48 0163000 14 17 Channel ff Channel ff Type 09 (Hardware Version) Type 0f (Device Type) Value 0110 (V1.1) Value 00 (Class A) Channel Type 0a ff (Software Version) Value 0101 (V1.1) 5.2 Sensor Data Item Channel Phase A Total 03 Current Phase B Total 05 Current Phase C Total 07 Current Phase A Current 04 Phase B Current 06 Phase C Current 08 Type 97 98 Phase A Current 84 Alarm Phase B Current 86 98 Alarm Phase C Current 88 Alarm Temperature 09 67 Temperature 89 67 Alarm Byte Description UINT32/100, Unit: Ah, Resolution: 0.01 Ah 4 Note: when it reaches to max value FFFFFFFF (42949672.95), it will clear to 0 automatically. UINT16/100, Unit: A, Resolution: 0.01 A 2 Note: FFFF means collection failure. Max. Current (2B) + Min. Current (2B) + Latest Current (2B) + Alarm Status (1B) Alarm Status: 01: Threshold alarm 02: Threshold alarm dismiss 7 04: Overrange alarm 08: Overrange alarm dismiss Note: Max./Min. Current means the maximum or minimum value between last report and current report. INT16/10, Unit: °C 2 Note: FFFD means overrange temperature; FFFF means collection failure. Temperature (2B) + Alarm Status (1B) Temperature: INT16/10, Unit: °C 3 Alarm Status: 01-Threshold alarm; 00-Threshold alarm 18 dismiss Example: 1. Periodic package: report as reporting interval (10 minutes by default). 039710270000 0498b80b 059710270000 0698b80b 079710270000 0898b80b 09673401 Channel Type Value Channel Type 10 27 00 00=>00 00 98 97 (Phase A 03 Total Current) 27 10=10000/100 =100 Ah 04 (Phase A Current) 10 27 00 00=>00 00 98 97 (Phase B 05 Total Current) 27 10=10000/100 =100 Ah 06 (Phase B Current) 07 97 (Phase C Total Current) 10 27 00 00=>00 00 27 10=10000/100 =100 Ah 08 98 (Phase C Current) 67(Temperat 09 34 01=>01 ure) 34=308/10=30.8°C Value b8 0b=>0b b8 =3000/100 =30A b8 0b=>0b b8 =3000/100 =30A b8 0b=>0b b8 =3000/100 =30A 2. Phase A current alarm or alarm dismiss packet: 8498 b80b d007 c409 01 Channel Type 84 98(Phase A Current) Value Max. Current: b8 0b=>0b b8=3000/100=30A Min. Current: d0 07=>07 d0=2000/100=20A Latest Current: c4 09=>09 c4=2500/100=25A Alarm Status: 01=> Threshold alarm 5.3 Downlink Commands CT3xx supports downlink commands to configure the device. The application port is 85 by default. Command Channel Type Description Reboot ff 10 ff Reporting Interval ff 8e 00 + Interval Time(2B), unit: min 9 Bytes, CTRL (1B) + Min (2B) + Max (2B) + Threshold Alarm 00000000(4B) ff 06 CTRL: Bit2~Bit0: 19 Clear Accumulated ff Current Alarm Reporting Interval ff Alarm Reporting Times ff 000 - disable; 001 - below; 010 - over; 011 - within; 100 - below or over Bit5~Bit3: 001 - Phase A current; 010 - Phase B current; 011 - Phase C current; 100 - Temperature Bit7~Bit6: 00 Max./Min. Threshold unit: A or 0.1°C 01: Phase A; 02: Phase B; 03: Phase C Note: when it reaches to max value 27 FFFFFFFF (42949672.95Ah), it will clear to 0 automatically. 02 2 Bytes, unit: min, range: 1~1440 f2 2 Bytes, range: 1~1000 Example: 1. Set reporting interval as 20 minutes. ff8e 00 1400 Channel ff Type 8e (Reporting Interval) Value 14 00=>00 14= 20 mins 2. Reboot the device. Channel ff ff10ff Type 10 (Reboot) Value ff 3. Enable Phase A current threshold alarm and set maximum threshold as 60A. ff 06 0a00003c00 00000000 Channel Type Value CTRL:0a=00001010=>over Phase A current maximum threshold ff 06 Min: 00 00=0 Max: 3c 00=> 00 3c=60 A 4. Set alarm reporting times as 10. fff2 0a00 Channel Type ff f2 (Alarm Reporting Times) Value 0a 00=>00 0a=10 -END- 20