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Notes from the panel shop and the plant floor

Practical articles on automation, drives, control panels and electrical systems, written by the engineers who design, build and commission them.

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2026年10月10日 · 5 min read

VFD or star-delta starter: choosing how to start an induction motor

A practical comparison of direct-on-line, star-delta, soft starters and variable frequency drives: starting current, torque, energy savings and when each one is the right choice.

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2026年10月3日 · 6 min read

Seven signs your PLC control system is due for a retrofit

Obsolete spares, unsupported software and undocumented logic: how to tell when an ageing PLC system has become a production risk, and how a planned migration avoids an unplanned shutdown.

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