5. PROCESS The final step is to document the process and test the function. Once everything is working flawlessly, it can be put into service. SUMMARY Because contact welding is a common problem, implementing a second redundant contactor is a wise investment that could prevent a catastrophic event. Order the ISO 13849 standard to become familiar with more details of how to realize a safety function. About NOARK NOARK Electric is a global supplier of low-voltage electrical components for specialty manufacturing industries. We strive to provide our customers with high-quality products at an affordable price, backed by a five-year limited warranty. We are committed to becoming a leader in cost-effective components through the development of innovative products and continuous improvements, while demonstrating integrity, trust and honesty. CANADIAN AUTOMATION VOLUME 4, ISSUE 2 16