Motor Protection: Protecting motors and driven loads: let’s torque sense 
 
I recently read an article implying that motor current can be used as an alternative to motor power to protect mechanical drive trains, writes Malcolm Greenhill. 
Sigma-7 products set a new industry standard in servo capability, with features that advance Yaskawa’s 25-year reputation for redefining the possibilities in motion automation. 
 
Sigma-7 is a complete family of servo motors and SERVOPACK amplifiers from 3w to 55kW, easily paired with a Yaskawa machine controller to create a motion automation system with the industry’s highest quality and reliability. 
The magnetic strain gauge sensor QE1008-W measure the surface-strain directly at the mounting location in the same quality as bonded strain gages. 
 
The magnetic press-on technology, developed by Sensormate AG, presses the strain gauges under the stainless protective film so strongly against the surface to be measured that frictional contact occurs. 
 
The mounting of the sensor is non-destructive, very fast and simple. 
 
Direct measurement of surface strain 
Quick and non-destructive assembly with magnetic press-on technology 
High accuracy and linearity in tension and pressure (like bonded strain gauges) 
Ideal for use on presses, injection-moulding and die-casting machines 
Application on tie bars with a diameter of 45mm or higher and flat surfaces 
Dynamic applications 
Without amplifier (passive) 
 
For more information please contact us at Electric Motors Online. 
 
Tel +44 (0) 2476 980833 
Mobile +44 (0) 7584 164757 
Email sales@electric-motors.online 
Web www.electric-motors.online 
 
Or click read more to watch a short video. 
Specialist in all aspects of industrial control and automation solutions. 
 
We are motivated by challenge and problem solving is in our DNA. We listen carefully to the needs of our Customers and aim to develop a solution which exceeds expectation, developing custom products or completely bespoke electronic systems if necessary. 
 
For more information click read more. 
The development of the new Sigma-7 series focused on three main goals: consistently fast commissioning, high production output and maximum operational reliability. The series offers a powerful response to today‘s market requirements for both machine constructors and final customers in the production industry. Sigma-7 offers particularly great potential for packaging plants, semiconductor manufacturing, wood processing and digital printing machines. 
 
These are now available from Electric Motors Online for more I formation please contact us on: 
 
Tel +44 (0) 2476 980833 
Mobile +44 (0) 7584 164757 
Email sales@electric-motors.online 
Web www, electric-motors.online 
 
Or click read more to watch a short video. 

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