Machinery Safety 101

Understanding Safety Functions: the start/restart function

Car engine start/stop button

After the safety-related stopping and the reset functions, the start/restart function is the next most common. Without a start/restart function, there is no way to make the machine do what it’s supposed to do. If you’re designing a machine control system, you need to understand this function.

Read More

What is risk assessment?

Risk assessment began as a discipline in the late 1960s, with some of the earliest formal papers published in the early 1970s. The early researchers were part of the US military and were interested in finding ways to reduce the risks for military personnel carrying out their duties. Since then, risk assessment has become a…

Read More

Conveyor System Safety

Processing of waste electrical and electronic materials

If you design, integrate or use conveyors in your operation, you should have a solid grasp on the basic safety requirements for conveyor systems. This article will get you up to speed on everything you need to know! 

Read More

Instructions for Use – the New ISO 20607

Instructions are one of the basic items that users expect to get when they purchase a product, and yet these important documents are often poorly written, badly translated, and incomplete. Key product features are badly described, and information on features, settings and hazards may be absent. All of this despite the fact that the minimum…

Read More

More E-Stop Questions

Here are some more questions I’ve been asked regarding emergency stop requirements. These ones came to me through the IEEE PSES EMC-PSTC Product Compliance Forum mailing list. Primary Sources There are three primary sources for the requirements for emergency stop devices: [1] Safety of machinery — Emergency stop — Principles for design, 3rd Edition. ISO…

Read More