Industrial drives motor control

Without being aware of it, people probably walk by and even use several LEM sensors each day. Sensors are present in elevators, forklifts, machines tools, printing machines and in all equipment using industrial drives on motors for efficient control, regulation, energy saving and comfort.

Drives control requires reliable and accurate current measurement to enable engineers to develop systems with isolated current measurement directly on the motor phases.


Main applications for Drives

LEM elevator

The current sensors are used to measure the constantly varying current in order to feedback for control purposes. This leads to an accurate adjustment of equipment operation. With a machine tool, the current flow increases abruptly when the tool starts working on the part to be machined. The better and faster the feedback signal, the smoother the control of equipment information.

Typical applications for drives sensors include:

  • Lifts
  • Escalators
  • White goods
  • Cranes
  • Wheel Chairs
  • Forklifts
  • Electric door opening systems
  • Robots
  • Pumps
  • Steel Mills
  • Machine tools (Printing paper, textile, plastic)…

Products for Drives

Drivesrobot arm dirves



Application example


Certificates and standards

Compliance with the highest industry standards

LEM products and processes comply with reference standards in the industry:

• CE marking of LEM transducers in recognition of their electromagnetic compatibility

• IEC standards for drives applications:
- IEC 61800-5-1 for safety
- IEC 61800-1 & IEC 61800-2 for climatic and mechanical constraints
- IEC 61800-3 for EMC

• RoHS compliant

• ISO TS 16949 certification of all production and development centers (Switzerland and China)

Quality products and services: our priority

Based on our deep knowledge of applications and current measurement technologies, LEM develops both catalog and customized products which can be perfectly tailored to meet your needs in terms of performance, space requirement and cost.

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