CJMCU CS5460A Single-Phase Two-Way Energy Metering Module

Product Description

The CJMCU CS5460A Single-Phase Two-Way Energy Metering Module is a high-performance power and energy measurement module based on the CS5460A energy measurement IC. It is designed for single-phase power monitoring and can measure important electrical parameters such as real energy, instantaneous power, IRMS, and VRMS.

The CS5460A integrates two high-resolution ADC channels, high-speed power calculation functions, energy-to-pulse conversion, and a serial communication interface into a single chip. One measurement channel is used for voltage sensing and the other for current sensing, making the module suitable for single-phase 2-wire or 3-wire power metering applications.

The module supports current measurement using a suitable shunt resistor or current transformer and voltage measurement through a resistive divider or potential transformer. Its bi-directional serial interface allows communication with a microcontroller, while the pulse output can provide a frequency proportional to real power.

A built-in Auto-Boot mode allows the CS5460A to initialize from an external serial EEPROM, enabling operation without a dedicated microcontroller in suitable applications. The module also supports AC/DC system calibration and phase compensation, making it suitable for accurate energy-monitoring and power-metering systems.

Features

• Based on CS5460A single-phase energy measurement IC
• Single-phase power and energy measurement
• Two measurement channels for voltage and current
• Measures real energy and instantaneous power
• Measures IRMS and VRMS
• Energy-to-pulse conversion
• Bidirectional serial communication interface
• Supports Auto-Boot mode using external serial EEPROM
• Can operate without a microcontroller in Auto-Boot configuration
• Supports AC and DC system calibration
• Voltage-to-current phase compensation
• Supports shunt or transformer-based current sensing
• Suitable for resistive divider or transformer-based voltage sensing
• Integrated 2.5V voltage reference
• Watchdog timer
• Power monitoring functionality
• Ground-referenced signals with single-supply operation
• Designed for high-accuracy energy measurement
• Suitable for two-way/bidirectional energy measurement applications

Specifications

Parameter	Specification
Module	CJMCU CS5460A Energy Metering Module
Main IC	CS5460A
Measurement Type	Single-Phase Power and Energy
Voltage Channel	1 Channel
Current Channel	1 Channel
Measured Parameters	Real Energy, Instantaneous Power, IRMS, VRMS
Energy Data Linearity	±0.1% of Reading over 1000:1 Dynamic Range
Communication	3-Wire Serial Interface
Pulse Output	Energy-to-Pulse Conversion
Calibration	AC/DC System Calibration
Phase Compensation	V vs. I Phase Compensation
Reference Voltage	2.5 V On-Chip Reference
Reference Drift	Approximately 60 ppm/°C
Typical Power Consumption	Less than 12 mW
Analog Supply	VA+ = +5 V, VA− = 0 V
Digital Supply	VD+ = +3.3 V to +5 V
Current Sensing	Shunt Resistor or Transformer
Voltage Sensing	Resistive Divider or Potential Transformer
Boot Mode	Auto-Boot from Serial EEPROM
Application	Single-Phase Energy Metering

Working Principle

The CS5460A uses two ADC channels to simultaneously measure voltage and current. The voltage sensing circuit provides a scaled representation of the AC or DC voltage, while the current sensing circuit provides a proportional signal from a shunt resistor or current transformer.

The IC processes these signals digitally to calculate parameters such as instantaneous power, real energy, RMS voltage, and RMS current. The calculated data can be accessed through the serial interface by a suitable microcontroller.

The module can also generate output pulses proportional to measured real power, allowing the pulse output to be used for energy metering or external counting systems.

Auto-Boot Mode

The CS5460A features a Smart Auto-Boot mode that allows the IC to initialize itself using configuration and calibration information stored in an external serial EEPROM.

When configured appropriately, the module can perform its measurement functions without requiring a microcontroller for initialization. This can help simplify the overall system design and reduce component requirements.

Calibration

The CS5460A includes functions for AC and DC system calibration. Calibration can be used to compensate for measurement errors caused by the sensing circuit and external components.

The device also provides voltage-to-current phase compensation, which can be useful in AC energy measurement applications where accurate real-power calculations are required.

Communication Interface

The module provides a simple three-wire digital serial interface for connection to a suitable microcontroller or digital system. The measured electrical parameters can be read and processed by an external controller for display, data logging, automation, or IoT energy-monitoring applications.

Applications

• Single-phase energy meters
• Smart energy monitoring
• AC power measurement
• Real-time power monitoring
• Industrial energy monitoring
• Home energy monitoring
• IoT energy monitoring systems
• Power analyzer projects
• Electricity consumption monitoring
• Bidirectional energy measurement
• Solar energy monitoring
• Grid power monitoring
• Embedded power measurement
• Electrical equipment monitoring
• Energy-to-pulse metering systems
• Industrial automation

Package Includes

• 1 × CJMCU CS5460A Single-Phase Energy Metering Module

Product Disclaimer

This module is intended for power and energy measurement applications and may require suitable external voltage and current sensing components depending on the intended measurement range.

The module should not be connected directly to hazardous mains voltage unless the appropriate voltage-divider, transformer, isolation, protection, and current-sensing circuits are correctly implemented. Working with mains electricity can cause electric shock, fire, or serious injury. Proper electrical isolation and safety precautions must be followed.

Actual measurement accuracy depends on the external sensing components, PCB design, calibration, wiring, temperature, and operating conditions.

Product images are shown for illustrative and representational purposes only. The actual product colour, dimensions, component placement, and appearance may vary slightly depending on the manufacturing batch.