Sysolution Electric Energy Statistics Senor RM1275 with SOC Chips Support DL/T 645-2007 MODBUS-RTU
Sysolution Electric Energy Statistics Senor RM1275
Product Introduction:
RM1275 single-phase AC energy metering module is a new product released by Sysolution Technology to accommodate various manufacturers to monitor the power consumption of their products. The software and hardware platform it uses has been applied in a large number of industrial products such as smart meters, and is the smallest unit to achieve power metering.
Applications:
RM1275 has been applied on a large scale in many industries, such as AC charging pile, street lamp post monitoring, machine room, base station monitoring, energy-saving transformation, intelligent power management, dynamic loop, security monitoring, equipment energy consumption monitoring, etc. The accuracy of the module is better than the national level 1 standard; it can measure AC voltage, current, power, power factor, frequency and other electrical data from 45 to 65Hz; its communication protocol conforms to Modbus RTU communication protocol and DL/T645-2007 multi-functional energy meter communication, and it is easy to connect with other micro controllers and ARM to realize automatic data acquisition and monitoring through corresponding interfaces.
This module can be easily embedded in street lamp post monitoring, smart home, smart household appliances, energy-saving transformation, intelligent power management, security monitoring, equipment energy consumption monitoring and many other industries, is an important supporting module to follow the trend of Internet of Things.
Functions & Features:
- Single module can achieve the collection of single-phase AC parameters, including voltage, current, power, power factor, frequency, electrical energy, temperature multiple electrical parameters, which provide overall information.
- Adopt industrial-grade special power metering SOC chip, with high measurement accuracy.
- Standard 485 communication, communication port with ESD protection, communication protocol supports DL/T 645-2007 and MODBUS-RTU dual statute.
- Flip over and restart the measurement after the electricity is fully stored, and the electricity data is protected by power down.
- Adopt current transformer with aperture Φ12.8mm, user can use Cable lug, which is convenient for user.
- When the load uses electricity, the PF pin will output the corresponding pulse. This pin can also be used for the calibration bench to check the power measurement accuracy of the metering module through pulse acquisition.
- the product has obtained the test report of the meteorology institute.
Product Image:
Specifications:
| Measuring Parameters | |
| Watt-hour Mete Level |
Level 1.0(Note 1)
|
| Voltage Range | 1-380V ±0.5%F.S |
| Current Range | 20mA-50A ±0.5%F.S |
| Current Range Extension | Expandable range, open-ended transformer (customized) |
| Frequency | AC45~65Hz |
| Temperature | Chip Temperature |
| Minimum Power Variable | 0.0001kW |
| Power Factor | Measurable |
| Pulse Constant | 1000imp/kWh |
| Minimum Electrical Energy Variable | 0.001kWh |
| CO₂ | National standard formula calculation |
| Communication Functions | |
| Interface Type | 485 communication (built-in ESD protection) |
| Communication Protocol | DL/T 645-2007 and MODBUS-RTU dual protocol |
| Data Format | Default "n,8,1" (no parity bit, 8 data bits, 1 stop bit) |
| Baud Rate | 2400bps-19200bps,default 4800bps |
| Data Refresh Interval | ≥250ms |
| Indicator | Power indicator / communication indicator (red) |
Working Parameters:
| Power | |
| Typical Power Consumption | ≤10mA |
| Power Supply | DC5.0V power supply, 3.3V power supply is available for shortly connect |
| Pressure Resistance Level | AC3000Vrms |
| Overload Capacity | 1.2 times the range |
| Environment | |
| Working Temperature | -40～+80℃ |
| Relative Humidity | 5～95%, no condensation (Under 40℃) |
| Altitude | 0～3000 m |
| Working Environment | No explosive, corrosive gas and conductive dust, no significant vibration and shock places |
| Structure | |
| Size | Length 60mmx width 65mmx height 40 mm |
| Wiring Pin Pitch | 3.81mm pitch (standard 3.81 green terminal) |
| Transformer Aperture | Φ12.8mm |
| Installation Method | Four corner fixing holes (3.5 aperture) installation |
Module Pin Definitions:
| Pin | Function |
| V+ | positive power supply for metering module |
| V- | Negative power supply for metering module |
|
Description: This group voltage is the module power supply voltage, default DC5V, while shortly connected the module RDJ1 and RDJ2 points can support 3.3V power supply, at this time the reverse protection function fails, pay attention to the correct wiring, reverse connection will directly burn out the chip. |
|
| EARTH | Connected to earth, can be suspended when not needed |
| B | External 485B |
| A | External 485A |
| P+ | External pulse port P+ |
| P- | External pulse port P- |
| L | Connect the measured live wire |
| N | Connect the measured Neutral wire |
Modbus Communication Protocols
Modbus protocol electrical parameter register list 1 (default, 4 bytes per address, high byte first)
| Number | Project | Register Address | Word Length | Read/Write | Data Type & Description |
| 1 | Voltage | 0048H | 4 | Read |
Hexadecimal unsigned number Unit 0.0001V Actual value = HEX2DEC (register value) x unit, same as below |
| 2 | Current | 0049H | 4 | Read | Hexadecimal unsigned number Unit 0.0001A |
|
3 |
Active power | 004AH | 4 | Read |
Hexadecimal unsigned number Unit 0.0001W Negative power initial F, actual power is 2^32- decimal register value |
| 4 | Active energy | 004BH | 4 | Read/Write | Hexadecimal unsigned number Unit 0.0001KWh |
| 5 | Power Factor | 004CH | 4 | Read | Hexadecimal unsigned number Unit 0.001 |
| 6 | Carbon dioxide emission | 004DH | 4 | Read | Hexadecimal unsigned number Unit 0.0001Kg |
| 7 | Temperature | 004EH | 4 | Read | Hexadecimal unsigned number Unit 0.01℃ |
| 8 | Frequency | 004FH | 4 | Read | Hexadecimal unsigned number Unit 0.01 Hz |
| 9 | Address & Baud Rate | 0004H | 2 | Read/Write |
Hexadecimal system Default value is 0105H: (Address 01H 8,N,1,4800), the default address is 1 High byte represents address, range 1~255, 0 is broadcast address Low byte: High 2 bits data format (00: 10-bit data "8,N,1") No checksum 1-bit end bit (01: 11-bit data "8,E,1") Even parity 1-bit end bit (10: 11-bit data "8,O,1") Odd-check 1-bit end bit Low byte: Lower 4 bits are baud rate (3: 1200bps 4: 2400bps) (5: 4800bps 6: 9600bps) (7: 19200bps) |
Note 1: The power direction function is an optional function
Modbus protocol electrical parameter register list 2 (customized, 2 bytes per address, high byte first)
| Number | Definition | Register Address | Read/Write | Data Type & Calculate Description |
| 1 | Voltage | 0048H | Read | Unsigned number, value=DATA/100, unit V |
| 2 | Current | 0049H | Read | Unsigned number, value=DATA/100, unit A |
| 3 | Active power | 004AH | Read | Unsigned number, value=DATA, unit W |
|
4 |
Active energy |
004BH | Read | Unsigned number, value=DATA/3200, unit kWh |
| 004CH | Read | |||
| 5 | Power Factor | 004DH | Read | Unsigned number, value=DATA/1000 |
|
6 |
Carbon dioxide emission |
004EH | Read |
High CO2 emission Low CO2 emission, value = DATA/1000, unit Kg |
| 004FH | Read | |||
| 7 | Temperature | 0050H | Read | Reserved (this function is not available in this module) |
| 8 |
Frequency |
0051H | Read | Value = DATA/100, unit Hz |
| 9 | Address & Baud Rate | 0004H | Read/Write |
Hexadecimal system Default value is 0105H: (Address 01H 8,N,1,4800), the default address is 1 High byte represents the address, range 1~255, 0 is the broadcast address Low Byte: High 2 bits data format (00: 10-bit data "8,N,1") No parity 1-bit end bit (01: 11-bit data "8,E,1") Even parity 1-bit end bit (10: 11-bit data "8,O,1") Odd-check 1-bit end bit Low Byte: The low 4 bits are baud rate (3: 1200bps 4: 2400bps) (5: 4800bps 6: 9600bps) (7: 19200bps) |
For More Communication Protocols, please download the RM1275 Datasheet in Download Center.
Dimension:
Unmarked dimensional tolerance: GB1804-m
Wire Connection
Standard Application Wiring Diagram
Short contact indication diagram
Cautions:
- This product contains quartz crystals. It is strictly prohibited to use ultrasonic cleaning on this product.
- The surface of this product is sprayed with three proof paint for protection, and it is strictly prohibited to clean the product surface.
- Please wire correctly according to the product specifications and model, as shown in the diagram. Before wiring, ensure that all signal sources and power supplies are disconnected to avoid danger and damage to the equipment. After checking and confirming that the wiring is correct, connect the power supply for testing.
- The voltage circuit or the secondary circuit of PT cannot be short circuited.
- When there is current on the primary side of the CT, it is strictly prohibited to open the secondary circuit of the CT; It is strictly prohibited to wire or unplug terminals with electricity.
- When using the product in environments with strong electromagnetic interference, please pay attention to the shielding of the input and output signal lines.
- During centralized installation, the minimum installation interval should not be less than 10mm.
- This series of products is not equipped with lightning protection circuits internally. When the input and output feeders of the module are exposed to harsh outdoor weather conditions, lightning protection measures should be taken.
- Do not damage or modify the labels or logos of the product, do not disassemble or modify the product, otherwise our company will no longer provide "three guarantees" (replacement, return, repair) services for the product.
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