Servo vendor designs: Low-EMI systems meet medical needs

Servo drives use pulse width modulation (PWM) switching power technology made to switch current on-and-off at frequencies at or above 20 KHz. These transitions create noise signatures at much higher frequencies, typically 10’s of MHz to 1 GHz. Drives and drive systems are, therefore, required to meet stringent requirements that comply with regulations imposed by U.S. Food and Drug Administration (FDA) and Federal Communications Commission (FCC).<br/>

11/29/2007


Servo drives use pulse width modulation (PWM) switching power technology made to switch current on-and-off at frequencies at or above 20 KHz. These transitions create noise signatures at much higher frequencies, typically 10’s of MHz to 1 GHz. Drives and drive systems are, therefore, required to meet stringent requirements that comply with regulations imposed by U.S. Food and Drug Administration (FDA) and

Federal Communications Commission (FCC).



Servo system vendor

Advanced Motion Controls



Medical equipment manufacturers (OEM’s) producing technology for treatment, diagnostics or closely related support services are increasingly relying on motion control for precision movements. The company says these standards are beyond those set forth by UL and CE (European Union requirements) for general industrial equipment, which mainly focus on device safety compliance.

The company says its servo drives can be built to these standards using compact PCB integrated flat wire inductors for motor outputs and power inputs, common mode filtering on logic supply input, PCB inter- and intra-layer layout techniques including grounding of separate circuitry stages and decoupling capacitors at all interface points to the drive. These implementations eliminate the need for external considerations and reduce the overall integration of the servo drives into medical equipment.

A typical example includes an independent laboratory test indicating a -10 dB level from maximum allowable across 30 MHz to 1 GHz with the servo drive operating at 80 V dc and delivering up to 10 Amps.

C.G. Masi , senior editor
Control Engineering Machine Control eNewsletter
(Register here and scroll down to select your choice of eNewsletters free.)





No comments
The Engineers' Choice Awards highlight some of the best new control, instrumentation and automation products as chosen by...
The System Integrator Giants program lists the top 100 system integrators among companies listed in CFE Media's Global System Integrator Database.
The Engineering Leaders Under 40 program identifies and gives recognition to young engineers who...
This eGuide illustrates solutions, applications and benefits of machine vision systems.
Learn how to increase device reliability in harsh environments and decrease unplanned system downtime.
This eGuide contains a series of articles and videos that considers theoretical and practical; immediate needs and a look into the future.
Sensor-to-cloud interoperability; PID and digital control efficiency; Alarm management system design; Automotive industry advances
Make Big Data and Industrial Internet of Things work for you, 2017 Engineers' Choice Finalists, Avoid control design pitfalls, Managing IIoT processes
Engineering Leaders Under 40; System integration improving packaging operation; Process sensing; PID velocity; Cybersecurity and functional safety
This article collection contains several articles on the Industrial Internet of Things (IIoT) and how it is transforming manufacturing.

Find and connect with the most suitable service provider for your unique application. Start searching the Global System Integrator Database Now!

SCADA at the junction, Managing risk through maintenance, Moving at the speed of data
Flexible offshore fire protection; Big Data's impact on operations; Bridging the skills gap; Identifying security risks
The digital oilfield: Utilizing Big Data can yield big savings; Virtualization a real solution; Tracking SIS performance
click me