Single-phase AC DC Measurements wide-range metering module

Description

1. Product introduction

1.1. Introduction:

JSY-MK-1031 is an integrated AC and DC measurement, which can complete the power measurement, acquisition and data transmission.

Electrical parameter measurement products. Accurately measure single-phase AC parameters (voltage, current, power, power factor, frequency, electricity, etc.,

For details of the parameter list, please refer to the electrical parameter register) and DC electrical parameters (voltage, current, power, electricity). This product adopts

Using TTL level as the data communication interface, it is completely isolated from the strong electric area, with small size, simple interface, and measurement current range

It has the characteristics of wide range and high flexibility, and can be flexibly embedded in various devices that need to measure power consumption, which is very cost-effective.

JSY-MK-1031 single mutual inductance energy metering module can be widely used in energy-saving renovation, electric power, communication, railway, transportation,

In environmental protection, petrochemical, steel and other industries, it is used to monitor the current and power consumption of AC equipment.

1.2. Features

·         Collect single-phase AC parameters, including voltage, current, power, factor, frequency, energy and other electrical parameters;

·         Collect DC parameters, including voltage, current, power, energy and other electrical parameters;

·         Using special measurement chip, RMS measurement method, high measurement accuracy;

·         With 1 TTL communication interface, compatible with 5V/3.3V interface;

·         The communication protocol adopts standard Modbus-RTU, which has good compatibility and is convenient for programming;

·         High isolation voltage, withstand voltage up to DC3000V;

1.3, technical parameters

Data parameters:

1) Voltage range: 0~264V;

2) Current range: 10mA~20A;

3) Overload capacity: the current 1.2 times the range is sustainable, and the voltage 1.5 times the range is not damaged;

4) Input impedance: voltage channel > 1 kΩ/V;

Communication interface:

1) Interface type: 1-way TTL communication interface, compatible with 5V/3.3V;

2) Communication protocol: MODBUS-RTU protocol;

3) Data format: The default is “n,8,1”, “e,8,1”, “o,8,1”, “n,8,2” can be set;

4) Communication rate: The default is 9600bps, 4800bps, 19200bps can be set;

easurement output data:

Voltage, current, power, energy, power factor, frequency and other electrical parameters, see the Modbus data register column surface;

Measurement accuracy:

Voltage, current, power, electricity: less than ±1.0%;

Isolation:

The power under test and the power supply are isolated from each other; the isolation withstand voltage is 3000VDC;

Power:

DC single power supply 5V power supply, power consumption 10mA.

Working Environment:

1) Working temperature: -20～+70℃; Storage temperature: -40～+85℃;

2) Relative humidity: 5～95%, no condensation (under 40℃);

3) Altitude: 0 to 3000 meters;

4) Environment: no explosion, corrosive gas and conductive dust, no significant shaking, vibration and shock;

5) Temperature drift: ≤100ppm/℃;

6) Installation method: PCB welding, the module plane size is 39.5*21.0mm

7) Module size: 39.5*21.0*8.0mm

2. Application

Product appearance

 

 

2.2, interface definition

2.2.1 Pin description:

Pin No	Feature	Functional Description
L	AC Mains Line L	Measured voltage live wire connection port
N	AC Mains line N	Neutral wire connection port of measured voltage
PF	Output	Active energy check pulse output, the default state is low level output, generally do not need to connect this pin, but keep it pin out position
TXD	Output	Module TTL level sending pin
RXD	Input	Module TTL level receiving pin
VCC	Power+	Metering module power supply pin, normal application range: 3.3V-5V
GND	Power-	GND

 

The live wire enters from the “IN” short, and the “OUT” terminal outputs, connected to the load;

2.3, application description

Please refer to the above diagram for correct wiring according to the product specification and model. Make sure to disconnect all signal sources before wiring to avoid

Danger and damage to equipment. After checking and confirming that the wiring is correct, turn on the power supply to test.

After the power is turned on, the “indicator” is always on, and the “indicator” flashes synchronously when the communication data is transmitted during communication.

When the product leaves the factory, it is set to the default configuration: address No. 1, baud rate 9600bps, data format “n,8,1”, transformation ratio is 1;

This product is adaptive to AC and DC signals, and the default is AC module. When using this module to test DC signals, it is necessary to use

The voltage above DC 5V activates the module as a DC module, and the module needs to be powered on again when the signal source is changed.

Through the JSY-MK-1031 series product testing software we provide, you can change the setting of product parameters and the general testing of the product try.

2.4. Electric energy metering function

Can provide single-phase voltage, current, power, power factor, frequency, active energy and other parameters;

Note: The power data can store up to 42949672Kw/h of power, and reset to zero after overflow.

 

3. JSY-MK-1031 Modbus register list

Table 1: System configuration read parameter register address and data communication table (function code 03H read, 10H write)

NO	Disc.	Register Address	R/W	Specific command
1	Address and baudRate	0004H	R/W	The default value is 0106H; the default address is 01H, the default communication format is 8, N, 1,9600bps illustrate: The high byte 8 bits are the address, 1~255; 0 is the broadcast address; The upper 2 bits of the low byte are the data format bits, If it is “00”, it means 10 bits without check, that is, “8, N, 1”; “01” means 11 bits, even parity, that is, “8, E, 1”; “10” means 11 bits, odd parity, that is, “8, 0, 1”; “11” means 11 bits, no parity, 2 stop bits, namely “8, N, 2″; The lower four bits of the low byte are the baud rate, 5-4800bps, 6-9600bps, 7-19200bps

 

Table 2: System read-only parameter register address and communication data table (function code 03H, read-only)

No	Disc.	Register Address	R/W	Specific command
1	Type 1	0000H	R	The value is 01031H
2	Type 2	0001H	R	Reserved
3	Voltage range	0002H	R	The value is 250, which means 250V
4	Current range	0003H	R	The value is 200, which means 20A

 

Table 3: Measurement electrical parameter register and communication data table (function code 03H read, 10H write)

NO	Disc	Address	R/W	Data Types and Calculations Description
1	Voltage	0048H	R	Unsigned number, value=DATA/100, unit V
2	Current	0049H 004AH	R	Unsigned number, value = DATA/10000, unit A
3	Active Power	004BH 004CH	R	Unsigned number, value = DATA/100, unit is W
4	Total Active Energy	004DH 004EH	R/W	Unsigned number, value = DATA/100, unit is kWh
5	Power Factor	004FH	R	Unsigned number, value=DATA/1000
6	Frequency	0050H