Machinery Safety 101

Emergency Stop – What’s so confusing about that?

Emergency Stop on machine console
This entry is part 1 of 16 in the series Emer­gency Stop

I get a lot of calls and emails ask­ing about emer­gency stops. This is one of those decept­ively simple con­cepts that has man­aged to get very com­plic­ated over time. Not every machine needs or can bene­fit from an emer­gency stop. In some cases, it may lead to an unreas­on­able expect­a­tion of safety from the user, which can lead to injury if they don’t under­stand the haz­ards involved. Some product-spe­cif­ic stand­ards

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Checking Emergency Stop Systems

Control Panel with Emergency Stop Button.
This entry is part 2 of 16 in the series Emer­gency Stop

This short art­icle dis­cusses ways to test emer­gency stop sys­tems on machines.

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Guarding Emergency Stop Devices

Emergency Stop on machine console
This entry is part 3 of 16 in the series Emer­gency Stop

Can emer­gency stop devices that a prone to unin­ten­ded oper­a­tion be guarded? Find out!

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Emergency Stop Categories

Emergency Stop on machine console
This entry is part 4 of 16 in the series Emer­gency Stop

I’ve noticed a lot of people look­ing for inform­a­tion on Emer­gency Stop cat­egor­ies recently; this art­icle is aimed at those read­ers who want to under­stand this top­ic in more depth. First, a cla­ri­fic­a­tion: Emer­gency stop cat­egor­ies DO NOT EXIST, but stop cat­egor­ies do. A stop cat­egory is a descrip­tion of a con­trol func­tion – what the con­trol does – and…

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Busting Emergency Stop Myths

Emergency Stop on machine console
This entry is part 5 of 16 in the series Emer­gency Stop

There are a num­ber of myths that have grown up around emer­gency stops over the years. These myths can lead to injury or death, so it’s time for a little Myth Bust­ing here on the MS101 blog!

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Using E‑Stops in Lockout Procedures

This entry is part 6 of 16 in the series Emer­gency Stop

Emer­gency stop devices are some­times, incor­rectly, used as part of a lock­out pro­ced­ure for machinery. Learn more about how to cor­rectly used these devices as part of Haz­ard­ous Energy Con­trol Pro­ced­ures for indus­tri­al machinery.

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Reader Question: Multiple E‑Stops and Resets

This entry is part 7 of 16 in the series Emer­gency Stop

I had an inter­est­ing ques­tion come in from a read­er today that is rel­ev­ant to many situ­ations: “When you have mul­tiple E‑Stop but­tons I have often got­ten into an argu­ment that says you can have a reset beside each one. I was taught that you were required to have a single point of reset. Who is cor­rect?” — Michael Barb,…

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Updates to Popular Articles

This entry is part 8 of 16 in the series Emer­gency Stop

We’ve recently updated a couple of our pop­u­lar art­icles! Check them out! Bust­ing Emer­gency Stop Myths Read­er Ques­tion: Mul­tiple E‑Stops and Resets

New contact block design for Emergency Stop devices from Siemens

This entry is part 9 of 16 in the series Emer­gency Stop

One issue that fre­quently comes up when inspect­ing machinery is the con­tact blocks used on emer­gency stop devices. Until now, e‑stop devices were nor­mally fit­ted with the same con­tact blocks used on oth­er oper­at­or devices, and in cases where the e‑stop sys­tem is single chan­nel, you could lose the con­tact block off the back of…

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Emergency stop devices: the risks of installer liability

This entry is part 10 of 16 in the series Emer­gency Stop

On the MachineBuilding.net blog today, Alex D’Arcy, Sales Dir­ect­or at Hylec-APL provides some inter­est­ing insights into the liab­il­it­ies asso­ci­ated with the install­a­tion of emer­gency stop devices on machinery. Hylec-APL provides tech­nic­al products and solu­tions in the field of indus­tri­al machinery and emer­gency stop sys­tems. Check out Alex’s art­icle. If you need to know more about the…

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