14-Channel AC Voltage Current Acquisition Module
Product No.: ZH-40143-14N2
Current range:20mA,100mA, 1A, 5AAC, etc. can be customized
Voltage range:1V, 10V, 50V, 100V, 250V, 400V, 500VAC, etc. can be customized
High-Precision True RMS Measurement
Configurable Input Ranges (Factory-Customizable)
14-Channel 0-20mA 0-10V AC Voltage and Current Combination Acquisition Module RS485 Ethernet Modbus Power Monitoring Module
Product Overview
This product is a real-time measurement and acquisition module for 14 AC signals, which uses electromagnetic isolation to achieve isolation between each channel signal. The signal measurement uses a dedicated 24 bit high-precision true RMS measurement chip to achieve true RMS parameters of AC signals, with high accuracy, good stability, and fast sampling speed; Adopting the standard RS-485 bus MODBUS-RTU protocol. Widely used in column cabinets, aging testing equipment, production automation testing, computer room monitoring, enterprise energy consumption testing big data analysis, etc.
Model Selection
ZH-40141-14N2:14 channel AC voltage acquisition(RS485 or Ethernet)
ZH-40142-14N2:14 channel AC current acquisition(RS485 or Ethernet)
ZH-40143-14N2:14 channel current voltage acquisition(RS485 or Ethernet)
Product Features
1.14 AC voltage or current or voltage current combination measurement, measure the total frequency of one channel;
2. Fast speed, 14 independent AD synchronous sampling, can complete data acquisition of all 14 electrical parameters in as little as 20ms;
3. High precision, using 24 bit AD sampling, dynamic range of 1000:1, and linear current range of up to 0.1%;
4.20mS、40mS、60mS、80mS、100mS、400mS、1000mS Seven adjustable collection speeds, which means completing the measurement of all electrical parameters within the set time;
5. Multiple power supply methods, wide power supply 9-30VDC or 9-55VDC or 220VAC;
6. High reliability, each channel is isolated from each other, the power supply, communication, and the tested end are fully isolated, and the withstand voltage is greater than 2500V;
7. There are two options for setting the address and baud rate with a hardware dip switch, as well as software settings.
Technical Specification
1.2 times the range is sustainable and measurable.
Instantaneous (<50mS) current 5 times,voltage 1.5 times the range without damage
20mS, 40mS, 60mS, 80mS, 100mS, 400ms (default), 1000ms can be set
Note: When the input AC signal frequency is not 50Hz, it is recommended to adjust the sampling speed to 400ms.
35mm guide rail or screw installation.
Appearance: 145X90X40 mm,screw installation: 135X70mm,
installation aperture ф 5m.
Application
Parameter
Specification
Accuracy level
0.2% FS, linear measurement range of one thousandth
Current range
20mA, 100mA, 1A, 5AAC, etc. can be customized
Voltage range
1V, 10V, 50V, 100V, 250V, 400V, 500VAC, etc. can be customized
Frequency measurement
40Hz-70Hz
Input impedance
voltage channel>2 k Ω/V; current channel 0 Ω
Overload capacity
Working temperature
Working temperature
Frequency response range
30Hz-1000Hz
Data collection update time
Isolation withstand voltage
>2500V DC
Auxiliary power supply
+9V~30V or+9V~55V
Rated power consumption
<0.8W (typical 24V power supply 27mA)
Output interface
RS485 (standard Modbus RTU communication protocol)
Data output
14 AC voltage or current signals,1 frequency signal
Communication baud rates
4800, 9600, 19200, 38400, 57600, 115200 bps; (Can be set up through software or hardware)
Data format
no parity/odd parity/even parity, 8 data bits, 1 stop bit/2 stop bits (1 or 0) optional
Lightning surge
greater than 2KV
Installation method
1.Server Room PDU & Power Distribution Cabinets:
High-density branch circuit monitoring.
2.Electrical Aging Test Equipment:
Automated testing lines and stress-test monitoring.
3.Industrial Automation & Factory Detection:
Multi-channel real-time electrical parameter tracking.
4.Enterprise Energy Management & Big Data Analysis:
Comprehensive power consumption auditing.
Why choose us
1.Direct Manufacturer Pricing:
Competitive pricing backed by direct R&D and manufacturing capabilities
2.Industrial-Grade Reliability:
Robust surge protection, multi-level channel isolation, and wide operating temperature range (-40 to +70).
3.Seamless System Integration:
Open standard protocols (Modbus-RTU / TCP) ensuring smooth compatibility with mainstream industrial PLCs and SCADA software.
4.Flexible Customization (OEM/ODM):
Tailored hardware ranges, firmware configurations, and protocol support to meet your exact project specifications.
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 data is transmitted instantly to your master controller.
Q2: What communication protocols and interfaces are supported?
A: It supports standard RS485 (Modbus-RTU) or Ethernet (Modbus-TCP) interfaces depending on the selected model variant.
Q3: Can the voltage and current ranges be customized?
A: Yes! Standard current ranges include 20mA, 100mA, 1A, and 5A AC, while voltage options range from 1V to 500V AC, with custom ranges available upon request.
Q4: How fast is the data sampling?
A: It features 14 independent simultaneous AD sampling channels with 7 adjustable speeds, completing all 14 channels in as fast as 20ms.
