12 Channel Single-Phase Power Monitoring Module with RS485 Modbus RTU
Product No.: ZH-40128
12 Independent Single-Phase Monitoring Channels
Optional Digital Inputs and Relay Outputs
Voltage Input:100V/250V/400V AC,etc
Current Input:100mA/500mA/1A/5A AC,etc
Description
The ZH-40124 12-Channel Single-Phase Power Monitoring Module is specifically designed for applications requiring simultaneous monitoring of multiple electrical circuits.
The device uses a shared voltage input combined with 12 independent current channels, significantly reducing installation complexity while maintaining accurate measurement performance.Using a dedicated 24-bit True RMS metering chipset, the module continuously measures:
1.Voltage
2.Current
3.Active Power
4.Reactive Power
5.Power Factor
6.Frequency
7.Active Energy
8.Reactive Energy
All measured data is transmitted through RS485 Modbus RTU, enabling seamless integration into:
1.PLC systems
2.SCADA platforms
3.Building Management Systems (BMS)
4.Energy Management Systems (EMS)
5.Industrial IoT gateways
6.Cloud monitoring platforms
Its high-speed sampling capability allows rapid response to load changes, making it suitable for energy monitoring, predictive maintenance, and industrial automation projects.
Product Model
| Model | Power Supply | Communication | DI/DO |
|
ZH-40124-14M1 |
9-30VDC |
RS485 Modbus RTU |
NO |
|
ZH-40124-19M1 |
85-265VAC |
RS485 Modbus RTU |
NO |
|
ZH-40128-14M1 |
9-30VDC |
RS485 Modbus RTU |
4DI + 2 Relay |
|
ZH-40128-19M1 |
85-265VAC |
RS485 Modbus RTU |
4DI + 2 Relay |
| Item | Specification |
|
Product Model |
ZH-40124 |
|
Measurement Type |
Single-Phase Power Monitoring |
|
Monitoring Channels |
12 Channels |
|
Voltage Input |
100V / 250V / 400V AC |
|
Current Input |
100mA / 500mA / 1A / 5A AC |
|
Current Sensor |
Built-in CT / External Split-Core CT Optional |
|
Measurement Parameters |
Voltage, Current, Active Power, Reactive Power, Power Factor, Frequency, Energy |
|
Measurement Method |
True RMS |
|
ADC Resolution |
24 bit |
|
Voltage Accuracy |
0.2% |
|
Current Accuracy |
0.2% |
|
Power Accuracy |
Better than 0.5% |
|
Sampling Speed |
60ms / 80ms / 100ms / 400ms / 800ms |
|
Isolation Voltage |
＞2500VDC |
|
Communication Interface |
RS485 |
|
Protocol |
Modbus RTU |
|
Baud Rate |
9600 / 19200 / 38400 / 115200bps |
|
Digital Inputs |
Optional 4 Channels |
|
Relay Outputs |
Optional 2 Channels |
|
Power Supply |
9-30VDC or 85-265VAC |
|
Power Consumption |
＜3W |
|
Operating Temperature |
-20℃ to +60℃ |
|
Installation |
DIN Rail Mount |
|
Dimensions |
180 × 110.5 × 51 mm |
1.Energy Management Systems (EMS)
Monitor branch circuit power consumption across factories, buildings, and campuses.
2.Building Management Systems (BMS)
Collect electrical energy data for HVAC, lighting, and equipment loads.
3.Street Lighting Monitoring
Real-time monitoring of multiple street lighting circuits for smart city projects.
4.Data Centers
Monitor power consumption of server racks and distribution circuits.
5.Industrial Automation
Track machine energy usage and optimize production efficiency.
6.Smart Factory Projects
Provide energy data for digital factory and Industry 4.0 deployments.
7.Commercial Buildings
Measure tenant-level electricity consumption for sub-metering applications.
FAQ
Q1. How many circuits can the module monitor?
The module can monitor up to 12 independent single-phase circuits simultaneously.
Q2. Does it require a voltage input for every channel?
No. Only one common voltage input is required while each circuit uses its own current measurement channel.
Q3. What communication protocol is supported?
The module uses RS485 communication with the standard Modbus RTU protocol.
Q4. Can it be connected to a PLC?
Yes. It is compatible with most PLCs, SCADA systems, industrial PCs, and IoT gateways supporting Modbus RTU.
Q5. Is the module suitable for distorted waveforms?
Yes. The device uses True RMS measurement technology and can accurately measure non-sinusoidal loads.
Q6. Does the module support energy metering?
Yes. It records both active energy (kWh) and reactive energy for each channel.
Q7. Are digital inputs and relay outputs available?
Yes. Models in the ZH-40128 series include 4 digital inputs and 2 relay outputs for remote monitoring and control.
