24-Channel AC Voltage Current Data Acquisition Module
Product No.: ZH-40243-14F2
Current range:2.5mA,20mA,100mA,1A,5A,10A AC etc
Voltage range:10V,100V,300V,450V AC etc
Protocol:Modbus RTU
Communication:RS485
24-Channel AC Voltage Current Data Acquisition Module
Product Overview
This product is a data acquisition module for real-time measurement of 24 channels of AC current (or voltage), which can also be mixed with voltage and current input. It uses high-precision current (voltage) transformers to achieve signal isolation and sensing. The signal measurement adopts a dedicated true RMS measurement chip, which can accurately measure the true RMS of various waveforms of current (voltage) with high accuracy and good stability; Adopting standard RS-485 bus interface and MODBUS-RTU protocol. Widely used in street lamp monitoring, production automation testing, LED lamp aging detection, etc.
Product Features
1.24 channels of synchronous sampling are mutually independent A/D, and data acquisition and update for all 24 channels are completed in 0.1 seconds;
2. High precision, using 24 bit A/D sampling, linear dynamic range can reach 1000:1;
3. Good stability, measurement accuracy is not affected by environmental temperature;
4. True RMS measurement, accurate measurement, suitable for various waveforms;
5. The communication address and baud rate have two options: dip switch setting and software setting;
6. Plug and unplug terminals are easy to use, with screws that are sturdy, safe, and reliable;
7. High reliability, each channel is isolated from each other, the power supply and communication are fully isolated, and the withstand voltage is greater than 2500V.
Performance metrics
1. Accuracy level: 0.2%;
2. Current range: 0~10mA/100mA/0~1A/0~5AAC, etc;
(The current range can be expanded through an external transformer)
3. Voltage range: 0~10V/100V/300V/450VAC;
4. Input impedance: Voltage channel 2k Ω/V; Current channel 0 ohms;
5. Working temperature: -20 ℃ to+60 ℃;
6. Data update time: 100mS (default), 80mS, 60mS, 40mS, 20mS, 400mS, 1000mS can be set;
7. Isolation withstand voltage:>2500V DC;
8. Auxiliary power supply:+9V-30V or+9V-55V;
9. Rated power consumption:<2W (typical 24V power consumption less than 40mA);
10. Output interface: RS485 (standard Modbus RTU communication protocol, with 255 bus loads);
11. Data output: 24 channels of AC current (voltage) values, output 10000 corresponding to the rated range value;
12. Communication baud rates: 2400, 4800, 9600, 19200, 38400, 57600, 115200 bps;
13. Data format: odd check/even check/no check (default), 8 data bits, 1 stop bit
14. Communication protocol: MODBUS-RTU protocol;
15. Communication settings: The communication address and baud rate have two options: toggle switch settings and software settings, with the default being switch settings;
16. Installation method: 35mm guide rail or screw installation; Appearance: 217X112X47mm, screw installation: 197 * 101mm, installation aperture ф 4.5mm;
Factory default communication parameters: Address 1, 9600 baud rate, no checksum, 8 data points, 1 stop bit.
Applications
Solar PV Generation Monitoring
Bipolar measurement captures DC output from solar arrays; bidirectional energy metering tracks self-consumption vs. grid feed-in.
Battery Energy Storage Systems (BESS)
Measures charge/discharge current and accumulated ampere-hours (Ah) for battery state-of-charge monitoring.
Industrial DC Power Monitoring
Full parameter acquisition for DC motor drives, electrolysis equipment, and DC distribution panels.
Telecom & Data Center Power
Monitor -48V or other DC bus systems with high accuracy and galvanic isolation.
Electric Room Monitoring
RS485 Modbus RTU output integrates seamlessly with SCADA, PLC, and building management systems
