7-Channel AC Data Power Acquisition Module RS485 Ethernet Modbus AC Power Energy Meter

Product Overview

This product is an acquisition module designed to measure 7-channel AC single-phase power signals, featuring mutual isolation between internal channels, true RMS measurement, high precision, excellent stability, and fast sampling speeds suitable for non-standard sinusoidal waveform applications. It is widely applied in server power distribution units (PDU/rack cabinets), aging test equipment, automated production testing, machine room monitoring, and enterprise energy consumption big data analysis.

Model Selection

1.ZH-40074-*4N2: 7-Channel AC Power Acquisition Module (9V–30V Power Supply, RS485 or Ethernet Optional)

2.ZH-40074-*9N2: 7-Channel AC Power Acquisition Module (220V Power Supply, RS485 or Ethernet Optional)
Key Features
1.Lightning-Fast 20mS Sampling:

Completes data acquisition for all 7 electrical channels in as fast as 20mS for high-speed dynamic tracking.

2.True RMS & Non-Standard Sinusoidal Support:

High-precision dynamic range (1000:1) with 0.1% current linearity, capable of accurately measuring distorted waveforms across a 30Hz–1000Hz frequency range.

3.Complete Galvanic Isolation:

Full channel-to-channel isolation and total isolation between power, communication, and measured endpoints with >2500V DC withstand protection.

4.Flexible Dual Communication & Power Options:

Supports standard RS485 or Ethernet interfaces with Modbus-RTU/TCP protocols, alongside flexible auxiliary power selections (9–30VDC, 9–55VDC, or 220VAC).

Technical Specification

1.Industrial Automation

Monitor equipment power consumption and operating efficiency.

2.Energy Management Systems (EMS)

Collect multi-circuit electrical data for centralized energy analysis.

3.Data Center Monitoring

Monitor branch circuits inside server cabinets and distribution panels.

4.Aging Test Equipment

Measure power consumption during product burn-in and reliability testing.

5.Manufacturing Production Lines

Track machine energy usage and identify abnormal power conditions.

6.Smart Building Monitoring

Integrate with BMS systems for building energy management.
FAQ
Q1. What parameters can the module measure?

The module measures AC voltage, current, active power, reactive power, power factor, frequency, forward energy, and reverse energy.

Q2. Does it support Modbus RTU communication?

Yes. The module communicates through RS485 using the standard Modbus RTU protocol.

Q3. Can it monitor all 7 channels simultaneously?

Yes. All seven channels are sampled independently and measured simultaneously.

Q4. Is the module suitable for non-sinusoidal loads?

Yes. It uses True RMS measurement technology, making it suitable for distorted waveforms and non-linear loads.

Q5. Can I connect it to a PLC?

Yes. It can be integrated with most PLCs, SCADA systems, industrial computers, and IoT gateways via Modbus RTU.

Q6. What isolation protection does the module provide?

Each channel is isolated, and the power supply, communication interface, and measured circuits are isolated with more than 2500VDC withstand voltage.

Q7. What industries commonly use this product?
Applications include:

• Data centers
• Industrial automation
• Energy management systems
• Smart factories
• Electrical testing equipment
• Building energy monitoring
• Solar and renewable energy monitoring