16-Channel AC Current Measurement Module with Modbus RTU/TCP
Product No.: ZH-40162A
Dual Communication Interface
Current ranges: 5A / 10A / 20A / 30A / 60A AC,etc
16-Channel Independent Acquisition
High-Precision Measurement
16-Channel AC Current Measurement Module with Modbus RTU/TCP
Product Overview
This product is an integrated onboard current transformer (CT) AC current acquisition and monitoring module. It adopts precision current transformers to achieve high-accuracy 16-channel AC current measurement. A dedicated True RMS measurement chip is utilized to accurately measure the RMS value of various waveform currents, providing high precision and excellent stability.
Each channel supports up to 31st-order harmonic measurement. Communication interfaces include RS485 or Ethernet. With its narrow-body design, the module is especially suitable for integration into power distribution cabinets and is widely used in applications such as environmental monitoring systems, power switchgear, and industrial furnace current monitoring.
Key Features
1.16-channel simultaneous sampling with independent A/D converters; complete data acquisition and refresh within 250 ms
2.True RMS measurement suitable for various waveform types
3.Fundamental and harmonic current RMS measurement with up to 31st harmonic analysis
4.Excellent stability; measurement accuracy is not affected by ambient temperature
5.Communication address and baud rate configurable via DIP switch or software
6.High reliability with isolation among input, communication, and power supply circuits; isolated communication chip with withstand voltage greater than 2500 V
7.Dual communication interfaces: RS485 and Ethernet can output simultaneously
8.Supports Modbus-RTU and Modbus-TCP protocols
9.Current transformer aperture diameter: 7.5 mm
10.Maximum measurable current: 150 A
Product Models
ZH-40162A-14P4/*A
16-channel AC current input, RS485 interface
ZH-40162A-34P4/*A
16-channel AC current input, Ethernet + RS485 interface
Note: “*” in the model number indicates the current measurement range of the module.
Performance Specifications
1.Accuracy Class: 0.2%, with linear accuracy of 0.1% FS
2.Resolution: 0.01% FS (1/10,000 of full scale)
3.Current Ranges: 5A / 10A / 20A / 30A / 60A AC,ect,can be customized
4.Overload Capability: Supports continuous measurement at 2× rated range; withstands up to 20× surge current without damage
5.Frequency Response: 30–1000 Hz
6.Operating Temperature: -40°C to +70°C
7.Data Update Rate: 250 ms
8.Isolation Withstand Voltage: >2500 VDC
9.Auxiliary Power Supply: 9–30 VDC
10.Power Consumption: <2 W (typical <60 mA @ 24 VDC)
11.Output Interface: Independent RS485 or RJ45 Ethernet port
12.Communication Protocols: Modbus-RTU / Modbus-TCP
13.Data Output: True RMS values of 16 input channels, with support for up to 31st harmonic data
14.Communication Baud Rates: 2400 / 4800 / 9600 / 19200 / 38400 / 57600 / 115200 bps
15.Data Format: 8 data bits, 1 stop bit, odd / even / no parity (default: no parity)
16.Communication Configuration: Device address and baud rate configurable via DIP switch or software; DIP switch mode enabled by default
17.Dimensions: 305 × 47 × 44 mm
18.Mounting Method: 35 mm DIN rail installation
