Removal and insertion under power, Other considerations – Rockwell Automation 1794-FLA FlexLogix Controller Installation Instructions User Manual
Page 7
FlexLogix Controller System 7
Publication 1794-IN002G-EN-P - January 2004
Removal and Insertion Under Power
The FlexLogix controller, the extended-local I/O adapter, the communication
daughtercards, and the I/O terminal bases cannot be removed or inserted
under power..
However, you can remove and insert FLEX I/O modules while backplane power is
applied and the system is operating.
Be sure that power is removed or the area is nonhazardous before proceeding.
Other Considerations
WARNING
If you insert or remove the module while backplane power is
on, an electrical arc can occur. This could cause an explosion
in hazardous location installations.
ATTENTION
Also consider the following before you install your
FlexLogix controller:
• This product is grounded through the DIN rail to chassis
ground. Use zinc plated yellow-chromate steel DIN rail to
assure proper grounding. The use of other DIN rail materials
(e.g. aluminum, plastic, etc.) that can corrode, oxidize, or are
poor conductors, can result in improper or intermittent
grounding.
• Power connection length should be less than 10 meters.