MAQ20 data acquisition and control system The PWRM Energy Monitoring Modules are IoT, universal, high accuracy, compact, self-powered, electrical energy measurement devices that interface to three-phase and single-phase energy systems. Specifically designed for industrial and commercial heavy-duty new and retrofit applications, the modules provide a wide range of highly accurate power and energy measurement values over an operating temperature range of -40°C to +85°C.

The DIN-rail mounted enclosures have pluggable terminal blocks for phase voltage and phase current which simplifies setup and maintenance, and the small format requires little space in control cabinets. The PWRMxx modules interface to phase voltages of 85–265VAC or 85–525VAC, 50/60Hz, and are self-powered from any of the lines. Higher voltage applications can be addressed using voltage transformers (VTs) and appropriate scaling in the module.

Phase current inputs have an industry-standard range of 0VAC to 0.333VAC. An external shunt, current transformer, or Rogowski Coil is used to measure currents directly or non- contact.


Data analysis such as but not limited to measuring power quality, monitoring energy consumption, and determining machine health turn into simple operations with the modules’ many features and ease of use.


  • Energy Metering Systems
  • Power Quality Monitoring
  • Solar Monitoring
  • Process Monitoring
  • Health of Machine
  • Predictive Maintenance
  • Retrofit applications in energy distribution and industry
The PWRM modules are designed for installation in harsh industrial environments and have a high level of noise immunity.
The PWRM modules measure and reports a wide range of electrical energy parameters which include, but are not limited to:
  • RMS Voltages and Currents
  • Phase Angles
  • Line Periods
  • Instantaneous Total Active Power
  • Instantaneous Total Apparent Power
  • Fundamental Active Power
  • Power Factors
  • Total Active Energy
  • Fundamental Active Energy
  • Fundamental Reactive Energy • Total Apparent Energy
  • Harmonics
  • Power Quality
    • Over-Voltage
    • Over-Current
    • Sag
Real-time data from the modules are accessed via an Ethernet TCP/ IP port using the HTTP API and a standard web browser on a host computer, smartphone, or tablet. Data logging is user-configurable and once parameters and ranges are selected, the data is automatically downloaded and stored.

IoT Energy Monitoring Product Family

Part Number Datasheet Description
IoT Energy Monitoring Module
IoT Energy Monitoring Module


User Manuals


Description Free Download Version File Type Download Size
Discovery tool 32 bit Sign-in for free download 0.9.2 ZIP 27MB
Discovery tool 64 bit Sign-in for free download 0.9.2 ZIP 48MB
API Open Source Code Sign-in for free download 1.0 ZIP 3KB
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