Circutor M6215E Lora Converter Instruction Manual

Circutor M6215E Lora Converter

SAFETY PRECAUTIONS

• Follow the warnings described in this manual with the symbols shown below.

DANGER

• Warns of a risk, which could result in personal injury or material damage.

ATTENTION

• Indicates that special attention should be paid to a specific point.
• If you must handle the unit for its installation, start-up, or maintenance, the following should be taken into consideration:
• Incorrect handling or installation of the device may result in injury to personnel as well as damage to the device. In particular, handling with voltages applied may result in electric shock, which may cause death or serious injury to personnel. Defective installation or maintenance may also lead to the risk of fire.
• Read the manual carefully prior to connecting the device. Follow all installation and maintenance instructions throughout the device’s working life. Pay special attention to the installation standards of the National Electrical Code.

Refer to the instruction manual before using the device

• In this manual, if the instructions marked with this symbol are not respected or carried out correctly, it can result in injury or damage to the device and /or installations.
• CIRCUTOR S.A.U. reserves the right to modify features or the product manual without prior notification.

DISCLAIMER

• CIRCUTOR S.A.U. reserves the right to make modifications to the device or the unit specifications set out in this instruction manual without prior notice.
• CIRCUTOR S.A.U. on its website, supplies its customers with the latest versions of the device specifications and the most updated manuals.
• www.circutor.com
• CIRCUTOR S.A.U. recommends using the original cables and accessories that are supplied with the device.

REVISION LOG

Table 1:Revision log

SYMBOLS

Note: The images of the devices are for illustrative purposes only and may differ from the original device.

VERIFICATIONS UPON RECEPTION

• The following must be checked upon reception of the device:
• a) The device has been supplied according to the specifications in your order.
• b) The device has not been damaged during transport.
• c) Perform an external visual inspection of the device before connecting it.
• d ) Check that it has been supplied with the following:

An installation guide

• Immediately contact the carrier and/or CIRCUTOR’s after-sales service if you detect any problem in the device upon reception.

PRODUCT DESCRIPTION

• Bridge LR is a gateway that makes the conversion between the RS-485 physical environment and the LoRaTM long-range wireless network.
• The device is fully configurable using configuration software.

CIRCUTOR has 2 models:

• Bridge LR PSAC, AC powered.
• Bridge LR PSDC, DC.
• The device has:
• 3 indicating LEDs to check transmission status.
• 1 push-button

INSTALLING THE DEVICE

PRELIMINARY RECOMMENDATIONS

• In order to use the device safely, it is critical that individuals who handle it follow the safety measures set out in the standards of the country where it is being used, use the personal protective equipment necessary (rubber gloves, face protection and approved flame-resistant clothing) to prevent injuries due to electric shock or electric arc due to exposure to current-carrying conductors and pay attention to the various warnings indicated in this instruction manual.
• The Bridge LR must be installed by authorised and qualified staff.
• The power supply must be disconnected before handling, altering the connections or replacing the device. Handling the device while it is connected is hazardous to people nearby.
• It is essential to keep the cables in a perfect condition to avoid accidents, personal injury and damage to installations.
• Limit the operation of the device to measuring the specified current or voltage values.
• The manufacturer of the device shall not be held responsible for any damage resulting from the user or installation company failing to observe the warnings and/or recommendations indicated in this manual nor for any damage resulting from the use of non-original products or accessories or those from other brands.
• Do not use the device to take measurements if you detect an anomaly or malfunction.
• The device must be disconnected from its power supply sources (power supply and measurement) before undertaking any installation, repair or handling operations on the device’s connections. Contact the after-sales service if you suspect that there is an operational fault in the device.

INSTALLATION

• While the device is connected, the terminals, opening the cover or removing elements may expose hazardous live parts. The device must not be used until the installation process is complete.
• Bridge LR has been designed for DIN rail assembly.

TERMINALS OF THE DEVICE MODEL Bridge LR PSAC

Table 3 :List of terminals of Bridge LR PSAC

Terminals of the device

1: L , Power supply| 4: B(-), RS-485 port
2: N , Power supply| 5: GND, RS-485 port
3: A(+) , RS-485 port|

MODEL Bridge LR PSDC

Table 4: List of terminals of Bridge LR PSDC

Terminals of the device

1: V- , Power supply| 4: B(-), RS-485 port
2: V+ , Power supply| 5: GND, RS-485 port
3: A(+) , RS-485 port|

OPERATION

LEDs

• The Bridge LR has 3 LEDs to indicate transmission status, Table 5.

Green: Activity

RF| LoRa TM **** communications

Red slow flashing: data transmission

Green fast flashing: data reception

Blue: Silence / Waiting time (only in Master mode)

COM| RS-485 communications

Red fast flashing: data transmission

Green fast flashing: data reception

PUSH-BUTTON

• The Bridge LR has 1 push-button (RST or RESET) to reset the device; see Figure 3.

OPERATING PRINCIPLE

• The Bridge LR is a gateway for converting data between the RS-485 physical environment and the LoRaTM long-range wireless network.
• These devices can be used to connect multiple RS-485 buses to a master, considerably reducing the cabling required. This can be done by simply connecting a Bridge LR configured as the Master to the RS-485 master, and an LR1RS + configured as the Slave to each of the buses to be connected; see Figure 4.
• There can be up to 32 end devices on each communications bus.
• Communication between the Bridge LR master and slave devices is fully transparent, therefore allowing straightforward installation by simply controlling transmission time between messages and the time-out period from the application’s master.

LoRaTM COMMUNICATION PARAMETERS

• The device is connected to LoRaTM radio technology for private networks.
• Bridge LR devices can only be used in private networks and cannot be connected to LoRaWAN networks.
• In Europe the frequency for LoRaTM communications is the 868 MHz ISM free band, allowing configu-ration of up to 9 different channels between 865.1 MHz (channel 0) and 869.85 MHz (channel 9). The default frequency is 869.525 (channel 7).
• The channels have different settings of working time and silence time depending on restrictions of each frequency. The Table 6 shows the Duty cycle of each frequency channel which is the percentage of time that it’s allowed to transmit in each channel. The smaller the duty cycle is, more restrictive the transmission period is. It’s recommended to use channels with bigger duty cycle for applications that require a faster data refresh time.

Table 6: Duty cycle

• The device has 10 transmission and reception modes (Table 7) in order to select speeds between 300 bps and 21875 bps, with the option of increasing communication speed by trading off transmission signal range.
• A period of silence during which the device cannot transmit has been set in order to respect the spec-tral limitation, in accordance with the transmission mode selected in the master; during this time, the RF LED lights up in blue and the device returns “Occupied” through the serial channel.

Table 7:Transmission and Reception modes

LoRaTM COMMUNICATION RULES

In a LoRa™ installation, the following times must be taken into account:

• Transmission time: It’s the time it takes for a data submission to go out of the Modbus Master, get the data from the Modbus slave and return to the Modbus Master (a complete communication cycle). On LoRa™ communications, it could take from 0,5 to 10 seconds, depending on Bridge LR configu-ration.
• Silence time: According on the configuration of Mode, Frequency and Transmission time, Bridge LR Master fix a silence time. During this time, all RS-485 communication through the LoRa™ network are blocked. If the Modbus Master continues sending data requests, it will receive timeout answers.
• Time between transmissions: From the point of view of Modbus Master, it’s the time between RS-485 or Ethernet requests. Basically, the sending cadence.
• Based on these times, we establish 2 communication rules that must be applied at the Modbus Master.
• Rule #1: Is completely mandatory in order to establish communication with the Modbus slaves through a Bridge LR network:
• Timeout RX Master Modbus > Transmission time
• Rule #2: It allows avoiding having timeouts in the communication bus of the Modbus Master since the Time between transmissions becomes greater than the Transmission Time required plus the Silence Time that the Bridge LR Master (RF LED in blue):
• Transmission time + Silence time

LoRaTM TRANSMISSION CYCLE

• In order to reach a wireless communication between the Modbus master and the Modbus slaves (via Bridge LR), timing rules must be configured on the Modbus master responsible to communicate with the devices.
• In order to facilitate the configuration of the Modbus masters, Table 8 and Table 9 show a guide to the Transmission Times and Silence Times generated in two common scenarios, such as the request of 1 and 2 Modbus registers.
• The Transmission time must be configured as timeout, and the Total time must be configured as Time between transmissions in the Modbus Master. The first one is totally mandatory for the application to work, while the second one will allow us to control the cadence of questions to be able to make sequential and orderly requests, and thus avoid having Modbus communication errors during the silence time of the Bridge LR Master.
• Transmission of 1 Modbus register (16 bits)

LoRa™ Mode| Transmission time| Silence time| Total time
---|---|---|---
0| 4 s| 8 s| 12 s
1| 3 s| 3 s| 6 s
2| 2 s| 3 s| 5 s
3| 2 s| 2 s| 4 s
4| 1 s| 2 s| 3 s
5| 1 s| 1 s| 2 s
6| 1 s| 1 s| 2 s
7| 1 s| 1 s| 2 s
8| 0.402 s| 1 s| 1.402 s
9| ≈ 0| ≈ 0| 0.126 s

Transmission of 2 Modbus register (32 bits)

Table 9:Transmission of 2 Modbus register (32 bits)

LoRa™ Mode| Transmission time| Silence time| Total time
---|---|---|---
0| 4 s| 16 s| 18 s
1| 3 s| 6 s| 9 s
2| 3 s| 3 s| 6 s
3| 2 s| 3 s| 5 s
4| 2 s| 2 s| 4 s
5| 1 s| 2 s| 3 s
6| 1 s| 1 s| 2 s
7| 1 s| 1 s| 2 s
8| 0.804 s| 1 s| 1.804 s
9| ≈ 0| ≈ 0| 0.196 s

RS-485 COMMUNICATION

• The Bridge LR have one RS-485 communications port, with MODBUS RTU ®, for reading and writing the device parameters.
• In the Modbus protocol uses the RTU (Remote Terminal Unit) mode.
• The Modbus functions implemented in the device are as follows:
• Function 0x03: Read holding registers.
• Function 0x06: Preset single register.
• Function 0x10: Preset multiple registers.
• Note: All the addresses of Modbus memory are in Hexadecimal.

Table 10: Modbus memory map

Parameter| Adress| Function| Values| Default values
---|---|---|---|---
Serial number| 00 – 03| 03| –| –
Software version| 04 – 05| 03| –| –
Hardware version| 07| 03| –| –
Peripheral number| 0E – 0F| 03, 06, 10| –| 1

RS-485 communication

| ****

10 – 11

| ****

03, 06, 10

| 0: 9600, 8, N, 1

1: 19200, 8, N, 1

2: 38400, 8, N, 1

3: 57600, 8, N, 1

4: 115200, 8, N, 1

5: 9600, 8, E, 1

6: 19200, 8, E, 1

7: 9600, 8, N, 2

8: 19200, 8, N, 2

13: 38400, 8, N, 2

| ****

9600, 8, N, 1

Operating mode| 12 – 13| 03, 06, 10| 0: Slave

1: Master

| 0
Silence time (only Master)| 1E – 1F| 03| ms| –
LoRaTM mode UpLink| 50 – 51| 03, 06, 10| 0: 292.97 bps

1: 585.94 bps

2: 976.56 bps

3: 1171.88 bps

4: 1953.13 bps

5: 2148.44 bps

6: 3515.63 bps

7: 7031.25 bps

8: 12500 bps

9: 21875 bps

| 0

LoRaTM mode DownLink

| ****

52 – 53

| ****

03, 06, 10

| ****

0

LoRaTM frequency UpLink| 54 – 55| 03, 06, 10| 0: 865.1 MHz

1: 865.2 MHz

2: 865.6 MHz

3: 868.5 MHz

4: 868.3 MHz

5: 868.85 MHz

6: 868.95 MHz

7: 869.525 MHz

8: 869.85 MHz

| 7

LoRaTM frequency DownLink

| ****

56 – 57

| ****

03, 06, 10

| ****

7

Parameter| Adress| Function| Values| Default values
---|---|---|---|---

Radio synchronization ID

| ****

58 – 59

| ****

03, 06, 10

| 0: No subnet- works

Other: Subnet- work ID

| ****

–

Radio signal strength (1)

| ****

1004

| ****

04

| MSB: RSSI (nega-

tive dBm)

LSB: SNR (2)

| ****

–

1. Parameter is available for firmware version 11.0 or later.
2. If 0 < SNR < 15, Positive. If SNR > 15, Subtract 0xFF and process as Negative.
3. If the peripheral address assigned to a device is forgotten, the default value can be retrieved as follows:
4. Press the RST or RESET(Bridge LR PSDC model) push-button for 10 seconds.
5. All the LEDs flash and the device returns to its factory settings when the push-button is released.

CONFIGURATION SOFTWARE

The Bridge LR is configured using PC software, which can be downloaded from the website (www.circutor.com).
Proceed as follows to start the configuration:

1. Connect the Bridge LR to the computer via a USB-RS-485 gateway.
2. Run the Configuration software on the computer, which will display the screen in Figure 6
3. In the Connection parameters section, select:
   • The Communications Port assigned by the PC.
   • The Communication mode
   • The Peripheral number
4. Once the device is communicating with the PC, the connection icon turns green, displaying the In-formative parameters and the default RS-485 and LoRaTN parameters (Figure 7).
5. Press the Modify button to change the RS-485 communication parameters. The window shown in Figure 8 will be displayed.
6. The following items can be modified in this window:
   • The Communication mode.
   • The Periferic number.
   • The Device’s Operating mode, i.e. whether the Bridge LR will work as the installation’s Master or Slave.
   • Note: Only the device that connects to the RS-485 master can be configured as the Master in the installation.
   • Press to send the changes to the device. The changes are applied automatically.
7. Press the button to change the LoRaTM communication parameters. The window shown in Figure 9 will be displayed.

The following items can be modified in this window:

• LoRa mode Uplink.
• LoRa mode DownLink.
• LoRa frequency Uplink.
• LoRa frequency DownLink.
• LoRa gateway ID.
• Transmission power.
• Radio synchronization ID.
• For basic configuration, simply ensure that the Radio synchronization ID parameter has the same value in all devices, both in the installation’s Master and in all the Slaves to be communicated.
• The other parameters should only be altered in the event of radio communication problems.
• Press to send the changes to the device. The changes are applied automatically.

TECHNICAL FEATURES

AC Power supply: Bridge LR PSAC

Rated voltage| 110 … 264 V ~
Frequency| 47 … 63 Hz
Maximum Consumption| 2.5    4.5 VA
Installation category| CAT III 300V
DC Power supply: Bridge LR PSDC

Rated voltage| 9 … 36 V
Maximum Consumption| 1 W
Installation category| CAT III 300V
Serial interface

Type| RS-485 3 wire
Baud rate| 9600 – 19200 – 38400 – 57600 – 115200 bps
Data bits| 8
Parity| without – even
Stop bits| 1 – 2
Wireless interface

Technology| LoRaTM
Frequency (Europe)| 868 MHz ISN band (9 channels)
Standard range| 1 km indoor

20 km exterior with direct vision

User interface

LEDs| 3 LEDs
Button| 1
Environmental features

Operating temperature| -10ºC … +60ºC
Relative humidity| 5 … 95 %
Maximum altitude| 2000 m
Protection degree| IP20
Mechanical features

Dimensions (mm)| Figure 10
Weight| 90 g.
Enclosure| Plastic UL94 – Self-extinguishing V0
Attachment| DIN rail
Electrical safety

Protection against electric shock| Double insulation class II
Standars

Safety requirements for electrical equipment for measurement, control and laboratory use

— Part 1: General requirements

| EN 61010-1
Electromagnetic compatibility (EMC) — Part 6-2: Generic standards – Immunity for indus- trial environments| EN 61000-6-2
Electromagnetic compatibility (EMC) — Part 6-4: Generic standards – Emission standard for industrial environments| EN 61000-6-4

MAINTENANCE AND TECHNICAL SERVICE

• The device does not need any maintenance.
• In the case of any query in relation to device operation or malfunction, please contact the CIRCUTOR S?A?U? Technical Support Service.

Technical Assistance Service

• Vial Sant Jordi, s/n, 08232 – Viladecavalls (Barcelona)
• Tel: 902 449 459 (Spain) / +34 937 452 919 (outside of Spain)
• email: sat@circutor.com

WARRANTY

• CIRCUTOR guarantees its products against any manufacturing defect for two years after the delivery of the units.
• CIRCUTOR will repair or replace any defective factory product returned during the guarantee period.
• No returns will be accepted and no unit will be repaired or replaced if it is not accom-panied by a report indicating the defect detected or the reason for the return.
• The guarantee will be void if the units has been improperly used or the storage, instal-lation and maintenance instructions listed in this manual have not been followed. “Im-proper usage” is defined as any operating or storage condition contrary to the national electrical code or that surpasses the limits indicated in the technical and environmental features of this manual.
• CIRCUTOR accepts no liability due to the possible damage to the unit or other parts of the installation, nor will it cover any possible sanctions derived from a possible failure, improper installation or “improper usage” of the unit. Consequently, this guarantee does not apply to failures occurring in the following cases:
• Overvoltages and/or electrical disturbances in the supply;
• Water, if the product does not have the appropriate IP classification;
• Poor ventilation and/or excessive temperatures;
• Improper installation and/or lack of maintenance;
• Buyer repairs or modifications without the manufacturer’s authorisation.

UE DECLARATION OF CONFORMITY

• CIRCUTOR S.A.U.
• Vial Sant Jordi, s/n
• 08232 – Viladecavalls (Barcelona)
• Tel.: (+34) 93 745 29 00 – Fax: (+34) 93 745 29 14www.circutor.com central@circutor.com

References

• Productos y soluciones integrales para la eficiencia energética eléctrica
• Productos y soluciones integrales para la eficiencia energética eléctrica

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