Rockwell Automation 2080-LC20-20QWB_20AWB_20QBB_20QWBR_20AWBR_20QBBR Micro820 20-Point Programmable Controllers - Manual (Page 5)

Micro820 20-Point Programmable Controllers 5
Publication 2080-IN009B-EN-P - April 2014
WARNING:
•
If you connect or disconnect the serial cable with power applied to this
module or the serial device on the other end of the cable, an electrical arc
can occur. This could cause an explosion in hazardous location installations.
Be sure that power is removed or the area is nonhazardous before
proceeding.
•
If you connect or disconnect the communications cable with power applied
to this module or any device on the network, an electrical arc can occur. This
could cause an explosion in hazardous location installations.
Be sure that power is removed or the area is nonhazardous before
proceeding.
•
When used in a Class I, Division 2, hazardous location, this equipment must
be mounted in a suitable enclosure with proper wiring method that
complies with the governing electrical codes.
•
Exposure to some chemicals may degrade the sealing properties of
materials used in the Relays. It is recommended that the User periodically
inspect these devices for any degradation of properties and replace the
module if degradation is found.
•
If you insert or remove the plug-in module while backplane power is on, an
electrical arc can occur. This could cause an explosion in hazardous location
installations. Be sure that power is removed or the area is nonhazardous
before proceeding.
Refer to the Wiring Diagram for each plug-in module for additional details
regarding removal or insertion under power.
•
When you connect or disconnect the Removable Terminal Block (RTB) with
field side power applied, an electrical arc can occur. This could cause an
explosion in hazardous location installations.
Be sure that power is removed or the area is nonhazardous before
proceeding.
ATTENTION:
•
The serial cables are not to exceed 3.0 m (9.84 ft).
•
Do not wire more than 2 conductors on any single terminal.
•
Do not remove the Removable Terminal Block (RTB) until power is removed.