24 Channel AC DC Current Acquisition Module RS485 Modbus Industrial Current Monitor

24 Channel RS485 Current Acquisition Module

Product Description

The ZH-44242A is a high precision 24 channel current acquisition module designed for industrial automation, production testing systems, aging test equipment and power monitoring applications.
The module supports isolated multi-channel current measurement with RS485 Modbus RTU communication. It adopts high precision current sensors and 24-bit ADC sampling technology to ensure stable and accurate current monitoring performance.
The device supports both DC current measurement and AC/DC true RMS current measurement, making it suitable for various industrial environments and distorted waveform detection applications.
Main Features

1.High Precision Multi-Channel Acquisition
2.24 channel independent current acquisition
3.24-bit high precision ADC sampling
4.Linear accuracy up to 0.1%
5.Measurement accuracy up to 0.2%FS
6.Fast update response as low as 20ms
7.Industrial Isolation Design

8.The module adopts complete isolation between power supply, communication and current input channels. Isolation voltage is higher than 2500VDC, ensuring reliable operation in harsh industrial environments.

True RMS Current Measurement
Supports AC/DC universal measurement and true RMS current detection. The module can accurately measure distorted waveforms and complex industrial current signals.

Flexible Communication Interface
RS485 communication interface
Standard Modbus RTU protocol
Compatible with PLC, HMI and SCADA systems
Supports multiple baud rates

Technical Specifications

Current Measurement Parameters

Communication Parameters

Electrical Parameters

Mechanical Parameters

 Application Areas

This industrial current monitoring module is widely used in:
1.Industrial automation systems
2.PLC current monitoring
3.Battery formation equipment
4.Aging test systems
5.Production line testing
6.Industrial power monitoring
7.Energy management systems
8.Smart factory applications
9.Industrial IoT system
10.Electrical control cabinets
11.Automated testing equipment
12.Multi-channel current monitoring systems

Product Advantages

1.Reliable Industrial Design

· High overload protection capability

· Stable long-term operation

· Excellent anti-interference performance

· Fully isolated design

· Wide temperature operation

2.Easy Installation

The DIN rail installation structure makes the module suitable for industrial control cabinets and automation equipment.

3.Flexible Configuration
Supports hardware DIP switch setting and software configuration for communication address and baud rate.
FAQ
1.What communication protocol does this module support?
The module supports RS485 Modbus RTU communication protocol.
2.Does the module support AC current measurement?
Yes. The module supports AC/DC universal true RMS current measurement.
3.What is the isolation voltage?
The isolation voltage is higher than 2500VDC.
4.Can it be connected to PLC systems?
Yes. It can be integrated with PLC, HMI, SCADA and industrial automation systems.

5.What is the fastest sampling speed?
The fastest data update time is 20ms.

6.Is DIN rail installation supported?
Yes. The module supports standard 35mm DIN rail mounting.

7.What current ranges are available?
The module supports 5A, 10A, 20A, 30A and 40A current ranges.
Application Cases – Industrial Current Monitoring Solutions

1.Battery Formation Equipment Current Monitoring
The 24 channel current acquisition module is widely used in lithium battery formation and aging systems for real-time multi-channel current monitoring.
Using RS485 Modbus RTU communication, engineers can collect current data from multiple battery channels simultaneously and integrate the data into PLC or SCADA systems.
Advantages

· Multi-channel synchronous acquisition

· High precision current monitoring

· Fast response speed

· Industrial isolation protection

· Long-term stable operation

2.PLC Production Line Current Detection

In automated production lines, the module can monitor the operating current of motors, actuators and industrial equipment in real time.
Abnormal current changes can be used for predictive maintenance and equipment fault warning.
Typical Industries

· Electronic manufacturing

· Automated assembly lines

· Packaging machinery

· Industrial robotics

3.Industrial Power Monitoring System
The module can be integrated into industrial power monitoring systems to measure multiple branch currents simultaneously.
Engineers can use the data for:

· Energy consumption analysis

· Equipment health monitoring

· Current overload detection

· Smart factory energy management

4.Aging Test Equipment Monitoring
In electronic product aging test systems, the module can continuously monitor the operating current of multiple DUTs (Devices Under Test).
This helps engineers detect abnormal current fluctuations during long-term reliability testing.
Suitable Products

· Power supplies

· Industrial controllers

· Automotive electronics

· Communication devices

· Consumer electronics

5.Smart Factory Industrial IoT Systems
The module supports industrial IoT integration through RS485 Modbus RTU communication.
It can upload real-time current data to:

· Edge gateways

· Industrial computers

· MES systems

· SCADA platforms

· Cloud monitoring systems

6.Motor Current Monitoring Applications
The module is suitable for monitoring multiple motor currents in industrial automation systems.
Applications include:

· Conveyor systems

· Pump stations

· HVAC systems

· Industrial fans

· Automated machinery

7.Renewable Energy Monitoring
The module can be used in renewable energy systems for branch current acquisition and monitoring.
Suitable Systems

· Solar power systems

· Energy storage systems

· DC distribution cabinets

· Battery management systems

8.Industrial Equipment Health Monitoring
By continuously monitoring operating current, engineers can analyze equipment status and identify abnormal operation conditions early.
This helps reduce downtime and improve maintenance efficiency.
Monitoring Functions

· Overcurrent detection

· Load analysis

· Equipment status monitoring

· Predictive maintenance

· Fault diagnosis