Current-sensing technology ‘redefines precision’ in ECM monitoring
22 January 2025 
A US sensing specialist, Senva, has announced a technology that, it claims, redefines precision when monitoring electronically commutated motors (ECMs). The company says that its ECMSET Pro current sensor “sets a new standard” in current monitoring for variable-speed EC motors, and addresses common challenges such as low-current sensitivity, false on/off readings, and complex installations. It can be used with low-power fractional horsepower motors in industrial and HVAC applications.
The product incorporates a patent-pending technology called ECTune, which adjusts sensitivity dynamically to ensure accurate, reliable detection of motor states, even at extremely low currents. This enables the sensor to differentiate accurately between idle and active motor states, minimising false readings and eliminating the need for wire wraps.
The ECMSET Pro is said to simplify the installation, troubleshooting and maintenance of ECMs. It offers:
- An adjustable turn-on threshold which can be set as low as 30mA, eliminating the need for wire wraps and simplifying installation.
- High-accuracy current sensing with sensitivity down to 5mA for reliable detection in variable-speed EC motor applications.
- The ECTune technology which uses advanced waveform analysis to differentiate motor states accurately. It harvests and detects power at extremely low currents, resulting in accurate, reliable detection.
- A compact, split-core design that enables quick set-ups without disconnecting wires.
- A pre-set adjustable dial that enables quick, safe set-up without live calibration, even in confined spaces.
- LED diagnostic indicators that simplify installation, troubleshooting and maintenance.
- Support for demand-based control, cutting energy costs.
“The ECMSET Pro represents a major step forward in energy monitoring technology,” says Senva CEO, Andre Perra. “With the addition of our patent-pending ECTune technology, we remain committed to providing innovative solutions that address the evolving needs of building automation and sustainability.”
