Apply motors and drives efficiently

Manufacturers worry about supplying hardware that meets federal efficiency requirements.

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There can be a lot of hype surrounding motor and drive efficiency. However, from a machine designer prospective, the new motor efficiency standards don't really affect the machine builder, but there are some things to be aware of. On the variable-frequency-drive (VFD) side of things, capabilities and features continue to improve, and you should know how reducing speed matters. The U.S. Department of Energy (DOE) has been involved with energy efficiency standards since 1975 when it released the 10 CFR Part 431 Energy Conservation Program. As of June 1, the Department of Energy 10 CFR Part 431 Energy Conservation Program: Energy Conservation Standards for Commercial and…

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How to tune PID loops

CD1608 HowtoTuneLoops Cover thumbDo you have difficulty tuning PID loops, especially for temperature control applications and servo-motor motion applications? Get help with this white paper.

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How to troubleshoot and calibrate 4-20 mA

Best practices for troubleshooting analog circuits to the PLC

By Mike Bacidore, editor in chief

A Control Design reader writes: We have several temperature, pressure and flow sensors on a new medical-device cleaning skid that we are developing. These instruments are connected to a PLC as 4-20 mA inputs, and there is also a 4-20 mA output used to control a pump motor speed. A recent failure of…

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    By Jeremy Pollard, CET

    Well, I can’t tell you how happy I am to have gotten hooked into Netflix, and my bride and I are watching a few episodes of Scandal. Clever, but disturbing. A governor kills his wife’s lover, she goes to jail, and then of course it was found to be pre-meditated, but he still gets away with it.

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  • Apply motors and drives efficiently

    By Dave Perkon, technical editor

    There can be a lot of hype surrounding motor and drive efficiency. However, from a machine designer prospective, the new motor efficiency standards don't really affect the machine builder, but there are some things to be aware of. On the variable-frequency-drive (VFD) side of things, capabilities…

    Full Story
  • How to troubleshoot and calibrate 4-20 mA

    By Mike Bacidore, editor in chief

    A Control Design reader writes: We have several temperature, pressure and flow sensors on a new medical-device cleaning skid that we are developing. These instruments are connected to a PLC as 4-20 mA inputs, and there is also a 4-20 mA output used to control a pump motor speed. A recent failure of…

    Full Story
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    By Tom Stevic, contributing editor

    Putting an operator interface in an atmospherically hazardous location requires an understanding of the hazards involved. If the interface can be located outside of the hazardous area, that would be the best solution. However, that is not always possible or practicable. The goal is to minimize the…

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