AMR DLMS System Smart Electric Meters Single Phase Two Wires PLC RS485 Communication

AMR DLMS System Smart Electric Meters Single Phase Two Wires PLC RS485 Communication

​Working Principle:

Measured AC voltage and current have been sampled and transported to professional metering chip, after digital processing, they have been changed to the pulse signal, which in direct proportion to active power, and then sent to microprocessor. Microprocessor would accumulate the pulse signal according to the tariff, then get total power and tariff power and put them in register. At the same time, the microprocessor finishes the function of display and changeover with external messages. Please take attention to the Figure 1

Features:

1)Metering

• Measuring for positive and reverse active power, storage the data, and according to which setting active group
• Multi tariff. For active power, it can accumulate and storage total, top, peak, flat, valley power according to certain period.
• It can storage total power and power for each tariff for last 12 months. The boundary is 24:00pm of end of month, or on the hour from 1st to 28th for every month

2)Remote Fee Control

It finished parameter setting and remote purchasing through RS485, carrier and other virtual medium..

3)Measuring and Monitoring

It can measure and monitor operating parameter such as voltage, current (including zero line current), power, power factor and etc. The error would not exceed ±1

4)Event Log

• Permanent record the time when reset happened, and also the data on that time.
• Recording total times for programming, the time for last 10 programming and also operation code and data identification for programming.
• Recording total times for timing (not including time broadcasting), the time for last 10 timing and also operation code.
• Recording total times for power down, the time for last 10 power down and power on.

e) Recording the last 10 times for switch out and on by remote control, and also the time for switch out/on, power and etc.

f) Recording the total times for opening meter cover, the time for last 10 opening happened and finished.

5) Display

a) The following information would be displayed in meter:

b) The unit for power is kWh, and 8 digital display, including 2 decimals

c) LCD backlight wake up methods including switch wake up, infrared wake up(any infrared can work) and etc. In normal use, the life time for LCD won’t be less than 10 years

d) When power off, the backlight can be woke up by switch; If no operation after waking up, LCD would close automatically after a cycle; If operation exist, LCD would close automatically in 30 seconds after operation.

e) Indicator: --Pulse Red, it is off in normal condition, and would be flash when measuring active power

--Alarm Red, it is off in normal condition, and would be on when alarming

--Trip Yellow, it is off in normal condition, and would be on when load switch disconnect.

6) Alarm

When the following faults or alarm appear, LCD would stop on the certain code and backlight keep on.

Error Code

Err-01 Control Loop Error

Err-04 Low Voltage for Clock Battery

Err-08 Clock Error

Err-10 Error for Certification

Err-16 Error for Key Correction

7) Freezing

Time Freezing: Freezing meter data according to the promissory time and interval; It can keep at least 12 times for each frozen fraction.

Instantaneous Freezing: Under improper condition, freezing current date time, all power and important measurement data; It keeps the data for last 3 times.

Appoint Freezing: In any case of older/new tariff, step tariff changeover and other situation which is necessary, the meter would freeze power and other important data on the changeover time, It keeps the data for last 2 times

Day Freezing: Store power on 0.00am for each day, total for 2 month

On Hour Freezing: Store active power for hour or half an hour, total for 96 data

8) Timing

Build in clock circuit with temperature compensation function, the calendar, timing, leap year can be changed over automatically. The output frequency for inner clock terminal is 1Hz. Between -25℃ to +60℃, clock accuracy is no more than ±1 s/d; Under reference temperature 23℃, clock accuracy is no more than ±0.5 s/d.

The accepted time broadcasting is no more than 5 min. No need to match with programming switch and communication password when time broadcasting. It can be set according to the inquire, and it avoid from handling in 5 min at the time when freezing or data storing.

9) Pulse Output

Meter has function for LED pulse and electrical pulse output which comes direct ratio with measuring energy. Optical test output device should comply gb/t17215.211-2006, electricity test output device should comply GB/T15284-2002. It has signal output terminal for clock, and the output frequency is 1Hz

10) Load Switch

External load switch, there is a group of switch signal for meter output. Volume of switch point is AC 220V/2A. Under normal condition, switch signal for output should keep switch on of load switch, allow for power on; When reach certain condition, switch signal for output should drive operation for external load switch, power off.

Introduction：

Wuhan Radarking Electronics Corp. is a modern share enterprises which focusing on the smart Internet of things(IOT) /smart grid energy consumption sensor/intelligent electric safety integrated solution. It established in 2002（former name: Wuhan Radarking Co.,Ltd.）and went public on January 27, 2015 with the stock abbreviation RADARKING and stock number 831722. It owns the independent R&D center and factory which is the key recommended high-tech enterprises in Wuhan city, Hubei Province.

It mainly R&D, manufacture and sell the integrated solution of smart Internet of things(IOT) energy consumption sensor/smart grid energy consumption sensor/energy consumption information acquisition and transmission(Collector, Concentrator, Communication Module), smart electric meter, smart water meter, “RDK” energy Internet of Things(IOT) intelligent energy safety integrated solution, digital campus energy consumption acquisition(meter reading) charging management integrated solution, 4-in-1 Meter energy consumption acquisition(meter reading) charging management integrated solution, 4-in-1 Meter/All-in-One Card cloud computing total charging management integrated solution, energy consumption monitoring and analysis integrated solution, mobile phone APP(Energy Consumption, Fast E Top Up).

Principle:

It pursues “Military Academy, Military Morality, Character, Integrity”business philosophy. According to the “ Success once at a time, Advance and reliable, Customer satisfaction, Continuous improvement” quality policy, produce the military high standard products depend on the talent and technology advantages. By military character, do the man first and then work, and provide the high quality products and favorable service to the domestic and overseas clients. With the high quality products and favorable service, it has won the good reputation from clients and won the large market share. (The group users has more than 3000).

Management：

We have a high efficiency, innovative, serious management team, and the factory has already passed ISO9001-2008 QMS, and ISO14001-2004 environment management system. It has not any batch quality problem since establishment. AQSIQ( State Quality Inspection Administration) take the spot checking of our electric meter during 2009-2016, and all the meter passed the inspection. Fully proved that the production is according to our quality management system, and the product quality is stable and reliable.

Oversea Market：

Quality product performance and good reputation, our products are not only successful sales in China, but also have been exported to more than 100 countries and regions in the world, including: Mongolia, Malaysia, Bangladesh, Germany, Italy, Russia, Brazil , India, the United Arab Emirates, Saudi Arabia and other countries, the products are subject to a great welcome and praise.