DIN Rail 2000V Isolated 24-Channel DC Voltage & Current Acquisition Module with Modbus RTU/TCP
Product No.: JSH-44241G
Current Range: 500 µA,1mA,20mA,50mA,0.1 A,0.2 A,0.5 A,1A,2A,5A,10A DC(customizable)
Voltage Range: 75mV,5V,10V,30V,60V,100V,200V,300V,400V,500V,700VDC(customizable)
Resolution: 0.01% of full scale (1/10,000)
Measurement Channels: 24 fully isolated channels (configurable as voltage,current,or mixed)
DIN Rail 2000V Isolated 24-Channel DC Voltage Current Acquisition Module with Modbus RTU/TCP
Product Overview
The JSH-4424-G series is a 24-channel isolated DC acquisition module for automated testing, product burn-in equipment and production inspection.
Choose 24 voltage inputs, 24 current inputs or a mixed voltage/current configuration with 24 inputs in total. Each channel uses an independent 24-bit A/D converter and is isolated from the other channels. Isolation is also provided between the measurement inputs, power supply and communication sections.
All 24 channels support synchronous sampling, with selectable data update intervals from 20 ms to 1000 ms. RS485 and Ethernet versions connect to compatible PLCs, industrial computers and supervisory systems.
Model Selection
Model
Input Configuration
Interface
JSH-44241G-14F2/#V
24 DC voltage inputs
RS485
JSH-44242G-14F2/#A
24 DC current inputs
RS485
JSH-44243G-14F2/#V*#A
Mixed DC voltage/current inputs, 24 total
RS485
JSH-44241G-34F2/#V
24 DC voltage inputs
Ethernet
JSH-44242G-34F2/#A
24 DC current inputs
Ethernet
JSH-44243G-34F2/#V*#A
Mixed DC voltage/current inputs, 24 total
Ethernet
#V and #A indicate the ordered input ranges. Specify the voltage/current channel allocation for mixed-input models. AC/DC universal versions are available under the corresponding JSH-4124G series; confirm the complete model before ordering.
Product Features
1.24 DC voltage or current or voltage current combination measurement (total number of channels is 24)
2. Fast speed, it only takes 20ms to complete the synchronization update of 24 data channels at the fastest
3. High precision, using an independent AD for each channel, with a linear accuracy of 0.1% and a resolution range of one ten thousandth
4.20mS、40mS、60mS、80mS、100mS、200mS、400mS Seven adjustable update speeds, which means completing all data measurement updates within the set time
5. High reliability, each channel is isolated from each other, and the power supply, communication, and tested end are fully isolated. The withstand voltage is greater than 2000V DC
6. There are two options for setting the address and baud rate with a hardware dip switch, as well as software settings
7.62mm large spacing plug and unplug terminals, easy to connect; Optional Ethernet interface communication output, supporting Modbus TCP protocol
Technical Specification
35mm guide rail or screw installation; Appearance: 217 × 109 × 47mm, screw installation:197 × 101mm,
Parameter
Specification
Accuracy level
0.1%
Current range
500uA, 1mA, 20mA, 50mA, 0.1A, 0.2A, 0.5A, 1A, 2A, 5A, 10A DC, etc. can be customized
Voltage range
75mV, 5V, 10V, 30V, 60V, 100V, 200V, 300V, 400V, 500V, 700V, etc. can be customized
Working temperature
-40 ℃ to+70 ℃; Isolation withstand voltage:>2000V DC
Data collection update time
20mS, 40mS, 60mS, 80mS, 100mS (default), 200mS, 400MS can be set
Auxiliary power supply
+24V; rated power consumption: power consumption<5W
Output interface
RS485 or RJ45 Ethernet interface
Data output
24 channels of DC voltage or current effective value, bipolar effective value, maximum value, combined output power value
Communication baud rates
4800, 9600, 19200, 38400, 57600, 115200 bps; (Can be set up through software or hardware)
Lightning surge
greater than 2kV
Installation method
Installation aperture ф 4.5mm; Weight: Approximately 430 grams
Applications
1.Automated Test Systems
Collect measurements from multiple DC test points through one acquisition module. Individually isolated channels support circuits with separate references, provided all input and isolation limits are satisfied.
2.Product Burn-In Equipment
Monitor DC voltage or current across multiple test positions during extended operating tests. A host system can record readings, compare channels and apply acceptance limits.
3.Production Inspection
Configure voltage and current inputs to match the inspection fixture. For example, a mixed-input version can provide 12 voltage inputs and 12 current inputs, keeping the total at 24.
4.Test Instrument Integration
Add isolated DC measurements to a PLC or industrial computer using RS485 or Ethernet communication. Select the measurement range and update interval for the required test sequence.
Why Choose Us?
1.High-Density 24-Channel Architecture:
Consolidates 24 independent measurement circuits into a single compact unit, drastically saving control cabinet space and reducing wiring complexity.
2.True Independent Multi-AD Sampling:
Features an independent 24-bit AD chip per channel, achieving ultra-fast 20ms synchronous updates without multiplexing delays or cross-talk.
3.Superior Industrial Isolation:
Offers robust >2000V DC full channel-to-channel isolation and surge protection to safeguard downstream control computers and PLCs.
4.Flexible Dual-Mode Configuration:
Supports both hardware DIP switches and software commands for easy address and baud-rate setup, with plug-and-play Modbus-RTU/TCP compatibility.
FAQ
1. Does the module provide 24 voltage inputs and 24 current inputs?
No. It provides 24 inputs in total. Select all-voltage, all-current or a mixed voltage/current configuration.
2. Are the channels individually isolated?
Yes. Each measurement channel is isolated from the others. The inputs, power supply and communication sections are also isolated. The specified isolation withstand voltage is greater than 1500 V DC.
3. Can voltage and current inputs be combined?
Yes. The JSH-44243G supports a mixed configuration. Specify the required channel allocation and ranges when ordering, such as 12 voltage inputs and 12 current inputs.
4. How quickly are all 24 readings updated?
The fastest specified update interval is 20 ms. Eight settings are available from 20 ms to 1000 ms, with 100 ms as the default.
5. Can I change any channel from voltage to current through software?
Do not assume that input types or physical ranges are software-selectable. Order the required hardware configuration and follow the supplied channel allocation.
6. Can it output power measurements?
The manual specifies power output for the mixed voltage/current version. Confirm channel pairing, register mapping and power scaling for the ordered configuration before integration.
