Milesight Smart Current Transformer
Featuring LoRaWAN®
CT10x 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
CT10x is in conformity with the essential requirements and other relevant provisions of the CE, FCC, and RoHS.
[CE Certification] [FCC Certification] [RoHS Certification]
Copyright © 2011-2024 Milesight. All rights reserved. All information in this guide is protected by copyright law. 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
Revision History
| Date | Doc Version | Description |
|---|---|---|
| Jan 12, 2024 | V1.0 | Initial version |
| Jun 6, 2024 | V1.1 | 1. Support flexible detachable design; 2. Support cable temperature sensor. |
Product Introduction
1.1 Overview
CT10x is a LoRaWAN® Smart Current Transformer for monitoring energy and analyzing consumption remotely. CT10x provides multiple current options to suit energy monitoring and supports sending threshold alarms. Its detachable, compact size, and clamp design allow for quick and safe installation in any indoor space without de-energizing a facility, simplifying installation and saving costs. Compliant with Milesight LoRaWAN® gateway and Milesight IoT Cloud solution, CT10x can be monitored via webpage or mobile App remotely. CT10x is widely used for energy monitoring of smart buildings, machine failure detection, and prevention.
1.2 Features
- Reports 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.
- Utilizes a sampling rate of up to 1s for real-time monitoring and quick alarm response.
- Compact size allows for installation in narrow scenarios.
- Supports flexible detachable design to accommodate various installation environments.
- Supports connecting to a temperature sensor via USB for cable temperature measurement.
- Non-invasive clamp design ensures easy and safe installation without the need for power de-energizing.
- Equipped with an LED indicator to show working status and alarms.
- Compliant with standard LoRaWAN® gateways and network servers.
- Compatible with Milesight IoT Cloud.
Hardware Introduction
2.1 Packing List
- 1 x CT10x Current Transformer
- 1 x Transceiver Cover
- 1 x Extension Cable (1m)
- 1 x Cable Temperature Sensor (1m)
- 1 x LoRaWAN® Stubby Antenna
- 1 x LoRaWAN® Magnetic Antenna (Optional)
- 1 x Warranty Card
- 1 x Quick Guide
[Warning Icon] If any of the above items is missing or damaged, please contact your sales representative.
2.2 Hardware Overview
Diagram showing the CT10x device with labels: Cable-tie Holes, USB Type-C, RST Button, LED Indicator, Antenna Connector.
2.3 Button and LED Indicator
| Function | Action | LED Indicator |
|---|---|---|
| Normal Work | The device is functioning properly. | Blinking every 2s |
| Low Power Mode | The device measures and reports at reduced rate. | Blinking every 5s |
| Low Voltage Mode | The device only measures at reduced rate. | Blinking every 10s |
| Alarm | The current is over the threshold or measuring range, or the temperature is over the threshold. | Fast Blinking |
| Reboot | Quick press the RST button once. | Blinking Once |
Note: If the LED is not blinking even after the device is installed, it is possible that the start circuit of the cable is too small and will take some minutes to charge the device.
2.4 Dimensions (mm)
Diagrams showing the dimensions of the CT10x device in millimeters.
Operation Guide
3.1 USB Configuration
CT10x can be powered and configured via a Type-C port for configuration and debug.
- Download ToolBox software from the Milesight website.
- Connect the device to a computer via the Type-C port.
- Open the ToolBox and select type as 'General', then enter the password to log into the ToolBox. (Default password: 123456)
- After logging into the ToolBox, you can check device status and change device settings.
Screenshot of the ToolBox Settings window showing serial port, baud rate, etc.
Screenshot of the device status screen within ToolBox, showing Model, Serial Number, Device EUI, Firmware Version, Hardware Version, Device Status, Join Status, RSSI/SNR, Current, Max. Current, Min. Current, Accumulated Ampere Hour, Channel Mask, Uplink Frame-counter, and Downlink Frame-counter.
LoRaWAN Settings
LoRaWAN settings are used to configure the data transmission parameters in the LoRaWAN® network.
Basic LoRaWAN Settings
CT10x supports basic configurations like join type, App EUI, App Key, and other information. You can also keep all settings by default.
| Parameters | Value | Description |
|---|---|---|
| Device EUI | 24E124756C221863 | Unique ID of the device which can also be found on the label. |
| App EUI | 24E124C0002A0001 | Default App EUI is 24E124C0002A0001. |
| Application Port | 85 | The port used for sending and receiving data, default port is 85. |
| Join Type | OTAA | OTAA and ABP modes are available. |
| Application Key | ******************************** | Appkey for OTAA mode, default is 5572404C696E6B4C6F52613230313823. |
| Device Address | DevAddr for ABP mode, default is the 5th to 12th digits of SN. | |
| Network Session Key | Nwkskey for ABP mode, default is 5572404C696E6B4C6F52613230313823. | |
| Application Session Key | Appskey for ABP mode, default is 5572404C696E6B4C6F52613230313823. | |
| RX2 Data Rate | RX2 data rate to receive downlinks. |
| Parameters | Value | Description |
|---|---|---|
| RX2 Frequency/MHz | 923300000 | RX2 frequency to receive downlinks. |
| Spread Factor | DR8 (SF12, 500k) | If ADR is disabled, the device will send data via this spread factor. |
| Confirmed Mode | [Checkbox Checked] | If the device does not receive the ACK packet from network server, it will resend data once. |
| Rejoin Mode | [Checkbox Checked] | 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. 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 packets sent | 32 packets | When rejoin mode is enabled, set the number of LinkCheckReq packets sent. Note: the actual sending number is Set the number of packets sent + 1. |
| ADR Mode | [Checkbox Checked] | Allow the network server to adjust the data rate of the device. |
| Tx Power | TXPower0-22 dBm | 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.
Screenshot of LoRaWAN frequency settings interface.
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
Screenshot of Channel Index settings for US915 frequency.
| Enabled Channel Index: 0-71 | Frequency/MHz | Channel Spacing/MHz | BW/kHz |
|---|---|---|---|
| 0-15 | 902.3-905.3 | 0.2 | 125 |
| 16-31 | 905.5-908.5 | 0.2 | 125 |
| 32-47 | 908.7-911.7 | 0.2 | 125 |
| 48-63 | 911.9-914.9 | 0.2 | 125 |
| 64-71 | 903.0-914.2 | 1.6 | 500 |
Note: 64 channels numbered 0 to 63 utilizing LoRa 125 kHz BW starting at 902.3 MHz and incrementing linearly by 0.2 MHz to 914.9. 8 channels numbered 64 to 71 utilizing LoRa 500 kHz BW starting at 903.0 MHz and incrementing linearly by 1.6 MHz to 914.2.
General & Alarm Settings
Basic Settings
| Parameters | Value | Description |
|---|---|---|
| Device Type | CT103-915M | |
| Reporting Interval (min) | 10 | The interval of reporting current data. Default: 10 mins, Range: 1 - 1440 mins. 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. |
Alarm Settings
Screenshot of Alarm Settings interface.
| Parameters | Value | Description |
|---|---|---|
| Alarm Reporting Interval (min) | 5 | The interval to report alarm packet after alarm triggers. This interval should be less than reporting interval. |
| Alarm Reporting Times | 3 | Alarm packet report times after alarm triggers. |
| Current Threshold Value | ||
| Excessive Current Threshold | A | The maximum current threshold value. |
| Insufficient Current Threshold | A | The minimum current threshold value. |
| Temperature | ||
| Over | °C | The maximum temperature threshold value. |
| Below | °C | 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.
Maintenance
3.4.1 Upgrade
- Download firmware from Milesight website to your PC.
- Go to Maintenance > Upgrade, click Browse to import firmware and click Upgrade to upgrade the device.
Screenshot of the Upgrade interface within Maintenance, showing Model, Firmware Version, Hardware Version, Domain, FOTA, and Local Upgrade options.
3.4.2 Backup
CT10x 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.
- Go to Maintenance > Backup and Reset, and click Export to backup the device configuration.
- Click Browse to import the backup file, then click Import to load the configuration.
Screenshot of the Backup and Reset interface within Maintenance, showing Config Backup and Config File options.
3.4.3 Reset and Reboot
Reset to Factory Default: Go to Maintenance > Backup and Reset of ToolBox, and click Reset to complete.
Reboot: Quick press the RST button once or send downlink command to reboot.
Installation
4.1 Device Assembly (Alternative)
The CT part supports to be attached or detached from the transceiver.
- Press the clip on the side with a screwdriver and separate CT and transceiver.
- Disconnect the wiring socket of the probe from the transceiver, then connect the extension cable to the CT clip.
- Pass the other end of the extension cable through the transceiver cover, then connect to the transceiver.
Diagrams illustrating the device assembly steps.
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.
Diagrams showing antenna installation.
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.
Diagrams showing transformer installation steps (1 and 2).
Note: Do not place Phase wire and Neutral wire within a single current transformer. [Prohibited Symbol]
4.4 Transceiver Installation
The transceiver can be put or hang in any suitable position or to be fixed via cable-ties.
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
CT10x reports basic information of the device whenever it joins the network.
| Channel | Type | Byte | Description |
|---|---|---|---|
| ff | 01(Protocol Version) | 1 | 01=>V1 |
| ff | 09 (Hardware Version) | 2 | 02 10=>V2.1 |
| Channel | Type | Value | |
|---|---|---|---|
| ff | 0a(Software Version) | 2 | 01 01=>V1.1 |
| ff | 0f(TSL Version) | 2 | 01 01=>V1.1 |
| ff | 0b (Power On) | 1 | Device is on |
| ff | 0f(Device Type) | 1 | 00 = Class A, 01 = Class B, 02 = Class C |
| ff | 16 (Device SN) | 8 | 16 digits |
Example: ff0bff ff0101 ffff0101 ff166746d48016300014 ff090110 ff0a0101 ff0f00
| Channel | Type | Value | Channel | Type | Value |
|---|---|---|---|---|---|
| ff | 0b (Power On) | ff (Reserved) | ff | 01 (Protocol Version) | 01 (V1) |
| ff | 0101 (TSL Version) | 0101 (V1.1) | ff | 16 (Device SN) | 6746d480 16300014 |
| ff | 09 (Hardware Version) | 0110 (V1.1) | ff | 0a (Software Version) | 0101 (V1.1) |
| ff | 0f (Device Type) | 00 (Class A) |
5.2 Sensor Data
| Item | Channel | Type | Byte | Description |
|---|---|---|---|---|
| Total Current | 03 | 97 | 4 | UINT32/100, Unit: Ah, Resolution: 0.01 Ah Note: when it reaches to max value FFFFFFFF (42949672.95), it will clear to 0 automatically. |
| Current | 04 | 98 | 2 | UINT16/100, Unit: A, Resolution: 0.01 A Note: FFFF means collection failure. |
| Current Alarm | 84 | 98 | 7 | Max. Current (2B) + Min. Current (2B) + Latest Current (2B) + Alarm Status (1B) Alarm Status: 01: Threshold alarm 02: Threshold alarm dismiss 04: Overrange alarm 08: Overrange alarm dismiss Note: Max./Min. Current means the maximum or minimum value between last report and current report. |
| Temperature | 09 | 67 | 2 | INT16/10, Unit: °C Note: FFFD means overrange temperature; FFFF means collection failure. |
| Temperature Alarm | 89 | 67 | 3 | Temperature (2B) + Alarm Status (1B) Temperature: INT16/10, Unit: °C Alarm: 01-Threshold alarm; 00-Threshold alarm dismiss |
Example:
1. Periodic package: report as reporting interval (10 minutes by default).
039773020000 04980019 09673401
| Channel | Type | Value | Channel | Type | Value |
|---|---|---|---|---|---|
| 03 | 97 (Total Current) | 73 02 00 00=>00 00 02 73=627/100 =6.27 Ah | 04 | 98 (Current) | 00 19=>19 00=6400/100 =64A |
| 09 | 67(Temperature) | 34 01=>01 34=308/10=30.8°C |
2. Current alarm or alarm dismiss packet:
8498 b80b d007 c409 01
| Channel | Type | Value |
|---|---|---|
| 84 | 98(Current) | 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 |
Downlink Commands
CT10x 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 |
| Threshold Alarm | ff | 06 | 9 Bytes, CTRL (1B) + Min (2B) + Max (2B) + Alarm Reporting Interval (2B) + Alarm Reporting Times (2B) |
| Clear Accumulated Current | ff | 27 | CTRL: Bit2~Bit0: 000 - disable; 001 - below; 010 - over; 011 - within; 100 - below or over Bit5~Bit3: 001 - Current; 100 - Temperature Bit7~Bit6: 00 Max./Min. Threshold unit: A or 0.1°C Alarm Reporting Interval unit: min Alarm Reporting Times range: 1~1000 01 Note: when it reaches to max value FFFFFFFF (42949672.95Ah), it will clear to 0 automatically. |
| Alarm Reporting Interval | ff | 02 | 2 Bytes, unit: min, range: 1~1440 |
| Alarm Reporting Times | ff | f2 | 2 Bytes, range: 1~1000 |
Example:
1. Set reporting interval as 20 minutes.
ff8e 00 1400
| Channel | Type | Value |
|---|---|---|
| ff | 8e (Reporting Interval) | 14 00=>00 14= 20 mins |
2. Reboot the device.
ff10 ff
| Channel | Type | Value |
|---|---|---|
| ff | 10 (Reboot) | ff |
3. Enable current threshold alarm and set maximum threshold as 60A, reporting interval as 2 minutes and reporting times as 5.
ff06 0a 0000 3c00 0200 0500
| Channel | Type | Value |
|---|---|---|
| ff | 06 | CTRL:0a=00 001 010=Current over maximum threshold Min: 00 00=0 Max: 3c 00=> 00 3c=60 A Alarm Reporting Interval: 02 00=>00 02=2 mins Alarm Reporting Times: 05 00=>00 05 =5 |
-END-
Contact Information
RG2i - Spécialiste IoT & M2M
14 rue Edouard Petit
42000 St-Etienne
Tel: +33 477 92 03 56
Email: contact@rg2i.com
Website: www.rg2i.com
File Info : application/pdf, 21 Pages, 1.64MB
DocumentDocumentReferences
GitHub - Milesight-IoT/SensorDecoders: Payload Codec for Milesight SensorsRelated Documents
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