12-Channel Fully Isolated DC Current Voltage DAQ Module with RS485 Modbus-RTU
Product No.: ZH-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
RS485 Communication with Modbus-RTU
Industrial-Grade Reliability
12-Channel Fully Isolated DC Voltage and Current DAQ Module CAN RS485 Ethernet Modbus BMS Monitoring Module
Product Overview
This product is a 12 channel fully isolated measurement and acquisition module that can achieve real-time output at a sampling rate of 1k. It uses a 32-bit industrial grade MCU and a 24 bit high-speed ADC with strong anti-interference ability. The high-speed isolation device realizes the isolation between signals in each channel. The strong anti-interference is applied to battery charging and discharging situations in energy storage stations or BMS systems.
Model Selection
ZH-34121-14M2/*V:12 channel voltage acquisition,RS485 communication
ZH-34121-34M2/*V:12 channel voltage acquisiton,Ethernet communication
ZH-34121-74M2/*V:12 channel voltage acquisition,CAN communication
ZH-34122-14M2/*A:12 channel current acquisition,RS485 communication
ZH-34122-34M2/*A:12 channel current acquisiton,Ethernet communication
ZH-34122-74M2/*A:12 channel current acquisition,CAN communication
ZH-34123-14M2/*V*A:12 channel current voltage acquisition,RS485 communication
ZH-34123-34M2/*V*A:12 channel current voltage acquisition,Ehternet communication
ZH-34123-74M2/*V*A:12 channel current voltage acquisition,CAN communication
Product Features
1.Use 12 high-speed ADCs, with 12 channels isolated and independent from each other, with a resolution of one ten thousandth
2.11 adjustable sampling rates, with a maximum real-time sampling rate of 1K; Support adjustable amplification factor for AD
3. Can 2.0b communication, supporting a maximum communication rate of 1M
4. Supports signed and unsigned data collection, and supports maximum value recording
5. Data supports active upload mode, which can achieve real-time active upload output at a sampling rate of 1k, with a maximum baud rate of 921.6k
6. Optional RS485 or Ethernet communication methods, communication protocols Modbus RTU and Modbus TCP can be configured
7. High reliability, mutual isolation between channels, full isolation of power supply, communication and tested end, withstand voltage greater than 2500V
8. Plug and unplug terminals, easy to use, exquisite appearance, flame-retardant ABS
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.Energy Storage Systems (ESS):
Battery charge-discharge test stands and high-voltage string supervision.
2.Battery Management Systems (BMS):
High-precision multi-channel DC voltage and current monitoring.
3.Industrial Automation & Test Benches:
High-speed electrical signal logging in harsh electromagnetic environments.
4.Power Electronics & Telecommunications:
Rigorous dc power distribution tracking.
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.
