Categories | Advanced Metering Infrastructure |
---|---|
Brand Name: | RADARKING |
Model Number: | DCRL12-RDK150-G2A |
Certification: | IEC, ISO |
Place of Origin: | China |
MOQ: | 1pcs |
Price: | Negotiation |
Payment Terms: | T/T, L/C, Western Union |
Supply Ability: | 1000000 pcs per year |
Delivery Time: | 3-35days |
Packaging Details: | Standard Export Package |
Working voltage: | AC 220V+-20% 50Hz |
RS485 idle voltage: | DC 5V. |
RS485 load capacity: | 32 sets of RS485 terminal device (800 meters). |
Power consumption: | Active power ≤ 3W; Apparent power ≤ 5VA. |
Company Info. |
WUHAN RADARKING ELECTRONICS CORP. |
Verified Supplier |
View Contact Details |
Product List |
Communication Isolation Dual Interface 485 To LoRaWAN Collector For
AMI
Description:
DCRL12-RDK150-G2A is 485-to-LoRaWAN collector based on G2A (uplink
LoRaWAN, downlink 485) is a product specially developed for IoT
communication occasions. The product is compatible with RS485
industry standards (DL/T645, CJ/T188, MODBUS protocol). It is used
to implement LoRaWAN communication for terminals with RS485
communication interface.
The collector is simple to use, and only needs to install the
collector in the area covered by the LoRaWAN gateway signal,
complete point-to-point data collection through the gateway. It has
the advantages of low power consumption, long life and two-way data
transmission, which provides a reliable guarantee for collecting
real-time data. The collector can automatically upload data to the
gateway, and the gateway automatically uploads data to the network
platform; The product is simple in structure, easy to maintain and
replace, and has no connection of uplink communication cables, and
the installation is convenient and quick. The product is designed
according to the concept of industrial control standards, the power
supply is energy-saving and completely isolated communication, with
strong anti-interference ability, long transmission distance, high
speed and stable operation.
1. Main Functions and Features:
1.1 Downlink RS485 interface (baud rate can be set), can carry 1-32
terminals; Uplink LoRaWAN.
1.2 Dual RS485 interface, one of which is a local maintenance
interface.
1.3 It comes with a miniature AC power supply, AC 220V can be
directly accessed. Applying the company's patented technology, it
has the functions of anti-lightning, anti-drying, anti-high
pressure, etc., effectively protecting the collector from normal
work.
1.4 Support DL/645, CJ/T188, MODBUS and other protocols (can be
customized).
1.5 Apply edge computing technology, timed active upload and
transparent transmission can be switched. The uploaded data task
(up to the maximum number of data tasks: 4), the interval between
uploading data (0000 to 9999 minutes), and the terminal file (the
terminal in the file can be automatically uploaded) can be set.
1.6 It has remote LoRaWAN mode and local RS485 mode for data
maintenance.
1.7 Communication isolation: Applying the company's patented
technology, with active isolation, anti-lightning, anti-dry,
anti-high voltage and other functions, effectively protect the
normal operation of the RS485 interface.
1.8 The professional interface data flow is automatically
controlled, and the instruction frame sent by the platform of
gateway is preferentially processed.
1.9 It adopts 2P rail type installation, which is small in size and
easy to install.
1.10 With a variety of status indications, the status of the
collector can be determined by the status indicator in the field.
1.11 The configured parameters are automatically saved during power
off and are automatically restored after power-on.
2. Main technical parameters:
2.1 Electrical parameters:
Working voltage: AC 220V+-20% 50Hz.
RS485 idle voltage: DC 5V.
RS485 load capacity: 32 sets of RS485 terminal device (800 meters).
Power consumption: Active power ≤ 3W; Apparent power ≤ 5VA.
2.2 Wireless performance parameters:
Center frequency: 433MHz/470MHz (customized project), LoRaWAN
international standard.
Modulation technology: Linear frequency modulation spread spectrum
modulation.
Bandwidth: 125kHz/250kHz.
RF power: 20dBm (100mW).
Receive sensitivity: -143dBm @SF12/BW 125KHz.
2.3 Safety performance:
Impact voltage: 2kV.
Working pressure: 2kV.
2.4 Electromagnetic Compatibility:
Electrostatic discharge: 4kV;
Fast pulse group: 2kV (Power supply loop), /2kV (Signal loop);
Surge: 2kV (Differential mode)
2.5 Use environment:
Temperature: -20℃~+60℃.
Humidity: Relative humidity ≤ 95%.
2.6 Data storage: Data storage time ≥10 years after power off.
2.7 Communication interface: dual RS485 interface.
2.8 Local interface: 2400bps.
2.9 Meter communication interface: Four baud rates can be set (eg:
200bps, 2400bps, 4800bps, 9600bps).
3. Composition principle
3.1 Brief description of working principle
The uplink communication module of the collector is the LoRaWAN
protocol communication module; The local interface adopts the RS485
communication mode; The meter communication interface communicates
with the energy meter on the downlink 485 bus through the RS485
communication mode.
The collector receives the reading/control command issued by the
cloud management platform and the reading/control command of the
energy meter on the downlink 485 bus of the collector through the
LoRa module.
The collector has the function of automatically collecting
predetermined data of the electric energy meter on the downlink bus
and uploading it at regular intervals. This function requires the
platform to pre-deliver the specified and truly connected 485
energy meter. Once the energy meter file (0 to 32) is successfully
downloaded, the collector will discard the instructions which not
belonging to the file and issued by the uplink, and will not
process it.
3.2 Diagram of hardware principle
Power supply module: Powered by an efficient switching power supply
module.
LoRa communication module: Realize the data interaction between the
LoRa node and the gateway, and select the Class C working mode in
the LoRaWAN standard protocol.
Local interface: With the running parameters of the query
collector, there are selected settings for some operating
parameters.
Downlink meter communication interface: According to the baud rate
setting value of the downlink interface in the collector, enable
the communication baud rate unified with it.
Main control module: Controls the data reception/send of the three
serial channels, stores/reads the internal E2 data, and sets the
status of the indicator according to the current working status to
inform the field personnel of the working status of the collector.
4. Operation, Adjustment and Installation.
1) No need for user operation and adjustment, it is installed by
professional personnel according to the installation wiring
diagram.
2) Before the installation, check the seal of the manufacturer, and
the seal is intact, then start the installation.
3) The collector is installed in a ventilated and dry place indoors
to ensure safe and reliable installation.
4) The collector should be wired according to the wiring diagram
shown in the manual. It is best to use copper wire or copper
terminal to connect each terminal and must be tightened.
5) Wiring diagram
1 is the main power supply, L input; 2 is the main power supply, N
input.
5 is connected to A1, 6 is connected to B1, 7 is connected to A2,
and 8 is connected to B2.
5. indicator light description
Online: After the collector is powered on, the LoRa communication
module automatically initiates a join action to enter the network,
at this time, the indicator light flashes; When the module enters
the network successfully, the indicator light turns to the constant
light mode.
Uplink: When the uplink LoRa module receives/sends data, the
indicator flashes once and the normal state is off.
Downlink: When the uplink meter bus interface receives/sends data,
the indicator flashes once and the normal state is off.
6. A1, B1, A2, B2 port RS-485 interface use
A1, B1 Port: Downlink meter RS-485 communication port.
A2, B2 Port: Local RS-485 communication port.
7. Transportation and storage
The product should not be subjected to severe impact during
transportation and unpacking. It should be stored on the bracket
under the original packaging conditions, and the stacking height
should not exceed 5 layers.
The place to be stored should be clean, the ambient temperature
does not exceed -40 ° C ~ +70 ° C, the relative humidity does not
exceed 95%, the air does not contain corrosive gases and mold.
The stored electric energy meter should be in the original
packaging. The environment of the storage place should be clean.
The ambient temperature should not exceed -25 °C ~ +70 °C, the
relative humidity should not exceed 85%, and the air does not
contain corrosive gases and mold.
8. Dimension(mm)
Length: 100mm; Width: 36mm; Height: 67mm.
9. Common fault diagnosis, analysis, and troubleshooting methods
1) All indicators of power-on are not displayed. Whether the
collector is installed normally, whether the wiring is wired
according to the correct drawing, and whether the collector input
line has 220V voltage input.
2) When the meter reads the data, there is no communication
indicator display, and the downlight of the collector has an
action. Is there any overload or short circuit on the 485 bus link?
3) The online indicator light continues to flash, the location of
the collector is not covered by the signal of the gateway, or the
LoRa antenna connector of the collector is abnormal and needs to be
repaired.
10. Accessories Description
The collector shall be equipped with instructions, certificate and
seal.
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