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Safety Guidelines
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 electro-mechanical devices, such as relays or limit
switches, that are independent of the P2000 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.
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Plan for Safety
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 automated 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 docu-
ments 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 elec-
trical 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.
Safety Techniques
The publications mentioned provide many ideas and requirements
for system safety. At a minimum, you should follow these regula-
tions. Using the techniques listed below will further help reduce the
risk of safety problems.
• Orderly system shutdown sequence in the P2000 control
program.
• Emergency stop switch for disconnecting system power.
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