Appendix A: Safety and Security Considerations
A-3
Stride MQTT Gateway User Manual, 1st Edition
Safety Guidelines
NOTE:
Products with CE marks perform their required functions safely and adhere to relevant standards as
specified by CE directives provided they are used according to their intended purpose and that the instructions
in this manual are adhered to. The protection provided by the equipment may be impaired if this equipment is
used in a manner not specified in this manual. A listing of our international affiliates is available on our web site:
https://www.AutomationDirect.com
.
WARNING: Providing a safe operating environment for personnel and equipment is your responsibility and
should be your primary goal during system planning and installation. Automation systems can fail and may
result in situations that can cause serious injury to personnel or damage to equipment. Do not rely on the
automation system alone to provide a safe operating environment. You should use external electromechanical
devices, such as relays or limit switches, that are independent of the PLC application to provide protection for
any part of the system that may cause personal injury or damage. Every automation application is different, so
there may be special requirements for your particular application. Make sure you follow all national, state, and
local government requirements for the proper installation and use of your equipment.
The best way to provide a safe operating environment is to make personnel and equipment safety part of
the planning process. You should examine every aspect of the system to determine which areas are critical
to operator or machine safety. If you are not familiar with control system installation practices, or your
company does not have established installation guidelines, you should obtain additional information from
the following sources.
• NEMA — The National Electrical Manufacturers Association, located in Washington, D.C.
publishes many different documents that discuss standards for industrial control systems. You can
order these publications directly from NEMA. Some of these include:
ICS 1, General Standards for Industrial Control and Systems
ICS 3, Industrial Systems
ICS 6, Enclosures for Industrial Control Systems
• NEC — The National Electrical Code provides regulations concerning the installation and use of
various types of electrical equipment. Copies of the NEC Handbook can often be obtained from
your local electrical equipment distributor or your local library.
• Local and State Agencies — many local governments and state governments have additional
requirements above and beyond those described in the NEC Handbook. Check with your local
Electrical Inspector or Fire Marshall office for information.
