Rockwell Automation 1746-NT8 SLC 500 Thermocouple/mV Analog Input Module User Manual - Manual (Page 79)

1 Publication 1746-UM022B-EN-P - January 2005
Chapter
7
Maintaining Your Module And Safety
Considerations
Read this chapter to familiarize yourself with:
•
preventive maintenance
•
safety considerations
The National Fire Protection Association (NFPA) recommends
maintenance procedures for electrical equipment. Refer to article 70B
of the NFPA for general safety-related work practices.
Preventive Maintenance The printed circuit boards of your module must be protected from
dirt, oil, moisture, and other airborne contaminants. To protect these
boards, install the SLC 500 system in an enclosure suitable for its
operating environment. Keep the interior of the enclosure clean, and
whenever possible, keep the enclosure door closed.
Also, regularly inspect the terminal connections for tightness. Loose
connections may cause a malfunction of the SLC system or damage to
the components.
Safety Considerations Safety is always the most important consideration. Actively think
about the safety of yourself and others, as well as the condition of
your equipment. Consider the following:
Indicator Lights – When the module status LED on your module is
illuminated, your module is receiving power.
Activate Devices When Troubleshooting – Never reach into a
machine to activate a device; the machine may move unexpectedly.
Use a wooden stick.
ATTENTION
Possible Loose Connections
Before inspecting connections, always ensure that
incoming power is OFF.
Failure to observe this precaution can cause personal
injury and equipment damage.