JSH-3412 Series 12-Channel Isolated DC Acquisition Module
Product No.: JSH-34121
Voltage range: 75mV, 10V, 30V, 60V, 100V, 250V, 400V, etc. can be customized
Current range: 1mA, 20mA, 50mA, 100mA, 200mA, 500mA, 1A, 2A, 3A, 5A, etc. can be customized
Accuracy level: 0.1%
Voltage channel overload capacity: 1.2 times the range, sustainable and measurable
12-Channel Fully Isolated DC Voltage and Current DAQ Module CAN RS485 Ethernet Modbus BMS Monitoring Module
Product Overview
The JSH-3412 series is a 12-channel DC acquisition module for measuring voltage, current or a specified combination of both. It uses 12 independent 24-bit ADCs and provides isolation between input channels, as well as between the measurement inputs, power supply and communication circuits.
Sampling rates up to 1 kHz support the observation of changing electrical signals during battery charge/discharge tests and industrial testing. CAN, RS485 and Ethernet versions provide different integration options for controllers and monitoring systems.
Model Selection
Model
Measurement Inputs
Communication
JSH-34121-14M2/#V
12 DC voltage channels
RS485
JSH-34121-34M2/#V
12 DC voltage channels
Ethernet
JSH-34121-74M2/#V
12 DC voltage channels
CAN
JSH-34122-14M2/#A
12 DC current channels
RS485
JSH-34122-34M2/#A
12 DC current channels
Ethernet
JSH-34122-74M2/#A
12 DC current channels
CAN
JSH-34123-14M2/#V*#A
12 combined voltage/current channels
RS485
JSH-34123-34M2/#V*#A
12 combined voltage/current channels
Ethernet
JSH-34123-74M2/#V*#A
12 combined voltage/current channels
CAN
The models above use a 9–30 V DC supply. Specify the measurement ranges and voltage/current channel allocation when ordering. Combined models have 12 input channels in total.
- 12 independently isolated measurement channels.
- Voltage-only, current-only and combined input configurations.
- Independent 24-bit ADCs with measurement resolution of 1/10,000 of range.
- Selectable sampling rates up to 1000 samples per second.
- Stated accuracy class of 0.1%.
- Instantaneous, average, RMS, peak-to-peak and maximum-value data.
- CAN 2.0B communication with bus rates up to 1 Mbit/s.
- RS485 Modbus RTU or Ethernet Modbus TCP options.
- Active data transmission supported with the appropriate configuration.
- 35 mm DIN rail mounting and pluggable terminal blocks.
Technical Specification
If the current channel is continuously overloaded by more than 4 times below 1A, it will not be damaged
(the smaller the range, the higher the overload capacity, for example, the 100mA range can be overloaded by 8 times)
1A-3A range overload twice without damage,Overload of 5A or above 1.2 times.
12 real-time sampled instantaneous values,
maximum values, peak to peak values,
and calculated converted effective values and average values
Application
Parameter
Specification
Accuracy level
0.1%
Voltage range
75mV, 10V, 30V, 60V, 100V, 250V, 400V, etc. can be customized
Current range
1mA, 20mA, 50mA, 100mA, 200mA, 500mA, 1A, 2A, 3A, 5A, etc. can be customized
Voltage channel overload capacity
1.2 times the range, sustainable and measurable
Overload capacity of current channel
Working temperature
-40 ℃ to+70 ℃
Sampling rate
5Hz, 10Hz, 15Hz, 25Hz, 30Hz, 50Hz, 60Hz, 100Hz, 500Hz, 1000Hz
Isolation withstand voltage
>2500V DC; Lightning surge: 2kV
Auxiliary power supply
+9V~30V or+9V~57V; Rated power consumption:<3W
Output interface
CAN2.0b, RS485 or Ethernet (standard Modbus RTU or Modbus TCP communication protocol)
Data output
Serial port baud rate
4800, 9600 (default), 19200, 38400, 57600, 115200, 230400, 256000, 460800, 9216000 bps
CAN speed
5k \ 10k \ 20k \ 40k \ 50k \ 80k \ 100k \ 125k \ 200k \ 250k \ 400k \ 500k (default) \ 800k \ 1M
Installation method: 35mm rail installation
Appearance dimensions:120 × 110.6 × 45.5mm,weight: 330 grams
1.Battery Charge and Discharge Testing
Measure voltage or current signals during charging and discharging. Instantaneous and average readings support test supervision, while maximum and peak-to-peak values provide additional information about signal variation.
For series-connected batteries, confirm the total pack voltage, channel-to-ground working voltage and input configuration before selecting a module.
2.Energy Storage Monitoring
Collect electrical measurements from selected circuits in energy storage equipment and transfer the readings to a controller or supervisory system.
3.Industrial Test Benches
Bring multiple isolated DC measurements into automated test equipment. Select the communication interface, sampling rate and data output mode for the test sequence.
4.DC Signal Monitoring
Measure multiple DC signals using individually isolated channels. Specify the input ranges to match the signal sources and required measurement resolution.
Why choose us
1.Direct Manufacturer Pricing:
Competitive pricing backed by direct R&D and manufacturing capabilities.
2.Industrial-Grade Reliability:
Built with 32-bit industrial MCUs, 24-bit ADCs, >2500V DC isolation, and robust flame-retardant ABS housing.
3.Advanced Communication Flexibility:
Multiple interface options including high-speed CAN 2.0b, RS485, and Ethernet with flexible protocol support.
4.Customization Support (OEM/ODM):
Tailored voltage/current ranges, custom firmware, and protocol integration to meet your specific project requirements.
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 long-term data logging or local memory storage capabilities. It tracks maximum/peak values and streams real-time data actively to your controller.
Q2: What communication protocols and interfaces are available?
A: You can choose between CAN 2.0b, RS485, or Ethernet interface variants, supporting standard Modbus-RTU, Modbus-TCP, and CAN communication protocols.
Q3: Can the voltage and current ranges be customized?
A: Yes! Standard options range from 75mV to 400V for voltage and 1mA to 5A for current, with full customization options available upon request.
Q4: How fast is the data sampling rate?
A: It offers 11 adjustable sampling rates, reaching up to a maximum 1K real-time sampling rate with active data transmission capabilities.
