Understanding safety functions: Local control

Control system remote control schematic showing the local control and remote control locaitons, the machine controller and the control system I/O.

The local control function is important to understand when designing machinery control systems. If the failure of the local control function could lead to increased risk to the user, it is a safety function. This article explains the local control function from a functional safety perspective.

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The Industrial S-Word

The Industrial S-Word is a new podcast covering industrial equipment safety hosted by Matt Ernst. Matt has many years of experience in the industrial automation sector, from his early days in 2006 with WIKA Instruments Canada Ltd., to his current work with Schmersal Canada. Last week I had the great pleasure of being interviewed by…

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The Westray Mine Disaster

Today is the 30th anniversary of the Westray Mine disaster in 1992. At 5:18 am on Saturday, May 9, 1992, a great, blue flame flashed out of the mine opening, a cloud of black smoke on its tail [1]. 26 miners lost their lives when a methane and coal dust explosion destroyed the mine. Eleven…

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Canada’s National Day of Mourning

April 28th poster: Fight for the living, Mourn for the dead.

Fight for the Living, Mourn for the Dead On April 28th, Canada’s National Day of Mourning, we mourn for our workplace dead. According to the WSIB, in 2020, 245 people died from a work-related injury or illness in Ontario [1]. Workplace deaths have broad and deep effects on workers’ families, employers, and society. Workplace fatalities…

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CSA Z432 Public Review Open!

CSA Z432 Public Review is open. If you are a user, a builder of machinery, or an evaluator of machinery, this is your opportunity to see the draft of this important standard and to make comments to help the Technical Committee improve the standard on your behalf. Note: The start of the public review period…

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