24-Channel Common-Negative DC Voltage Data Acquisition Module
Product No.: ZH-42241
24 differential or single-ended common-negative DC voltage inputs
RS485 Modbus RTU serial communication interface
DIN-rail mountable, compact form factor
Galvanic isolation between field inputs and communication
24-Channel Common-Negative DC Voltage Data Acquisition Module
Product Overview
This product is a real-time data acquisition module for measuring 24 channels of DC voltage and current. It adopts high-precision 24 bit AD differential mode for acquisition and measurement, with 12 channels of DC voltage and 12 channels of DC current input. The signal measurement uses a dedicated measurement chip, which can accurately measure various DC signals with good anti-interference performance, 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.
Model
ZH-42241-14N2/*V:24 channel DC voltage acquisition module,RS485 communication
ZH-42241-34N2/*V:24 channel DC voltage acquisition module,Ethernet communication
Product Features
1.24 channels of synchronous sampling are mutually independent AD, completing data acquisition and update for all channels in 0.1 seconds;
2. High precision, using 24 bit AD sampling;
3. Good stability, measurement accuracy is not affected by environmental temperature;
4. Current differential input, voltage common negative input, input signals are not isolated from each other
Performance metrics
1. Accuracy level: 0.5% FS;
2. Range: Current: 0-5A/0-10A DC; Voltage: 0-500V DC;
3. Working temperature: -20 ℃ to+60 ℃;
4. Data update time: 100mS;
5. Isolation withstand voltage:>2500V DC (input voltage and current signals are not isolated from each other);
6. Auxiliary power supply: 24V DC (15V~30V);
7. Rated power consumption: 2W;
8. Output interface: RS-485;
9. Data output: 24 channels of DC voltage and current data;
10. Communication baud rates: 4800, 9600, 19200, 28800 bps;
11. Data format: no checksum, 8 data bits, 1 stop bit
12. Communication protocol: MODBUS-RTU protocol
