24-Channel Common Negative 0-10V 0-500V 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
Voltage range:10V/60V/100V/200V/300V/500V DC(can produce 20mA input current type)
24-Channel Common Negative DC Voltage Data Acquisition Module RS485 Ethernet Modbus Monitoring 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 Selection
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
Technical Specification
Product Size
Application
Parameter
Specification
Accuracy level
0.5% FS
Voltage Range
10V/60V/100V/200V/300V/500V DC(can produce 20mA input current type)
Working temperature
-20 ℃ to+60 ℃
Data update time
100mS
Isolation withstand voltage
>2500V DC (input voltage and current signals are not isolated from each other)
Auxiliary power supply
24V DC (15V~30V)
Rated power consumption
less than 2W(Typical value 24V power supply 60mA)
Output interface
RS485 or Ethernet(Standard Modus-RTU or Modbus-TCP Protocol)
Data output
24 channels voltage,can measure positive and negative polarity, can customize the active data upload mode
Communication baud rates
4800, 9600, 19200, 28800 bps
Data format
no checksum, 8 data bits, 1 stop bit
Install
35mm DIN rail or screw installation
145X90X40mm,screw installation:135x70mm,installation aperture:5mm
1.Testing & Aging Test Equipment:
High-density multi-channel voltage supervision during product stress testing.
2.Industrial Automation Testing:
Automated production line electrical parameter verification.
3.Online Monitoring Systems:
Real-time multi-point DC voltage distribution tracking.
4.Power Distribution & Telecommunications:
Centralized monitoring of multi-circuit DC power networks.
Why choose us
1.Direct Manufacturer Pricing:
Competitive, direct-from-factory pricing backed by the R&D and manufacturing capabilities.
2.Industrial-Grade Reliability:
Robust electrical isolation, wide temperature tolerance (-20 to +70), and low power consumption design.
3.Seamless System Integration:
Open standard Modbus protocols over RS485 or Ethernet for frictionless compatibility with mainstream PLCs and SCADA software.
4.OEM/ODM Customization:
Flexible voltage ranges, custom power supply configurations, and protocol integration tailored to your specific project needs.
FAQ
Q1: Does this module support internal data logging or storage?
A: No, this product is a pure real-time data acquisition and transmission module; it does not feature onboard data logging or local memory storage capabilities. All measurements are streamed in real time to your upper-level monitoring system.
Q2: What communication options are available?
A: Depending on the model variant, it supports either standard RS485 (Modbus-RTU protocol) or Ethernet (Modbus-TCP protocol) communication interfaces.
Q3: Can the voltage ranges be customized?
A: Yes! Standard ranges span from 10V up to 500VDC, and models can also be produced for 20mA current input types or custom voltage spans upon request.
Q4: What is the input wiring configuration?
A: It features a 24-channel common-negative input configuration, supporting both positive and negative polarity DC voltage measurements.
