Rockwell Automation 1769-L24ER-QB1B_QBFC1B_QBFC1B CompactLogix 5370 L2 Controllers Installation Instructions - Manual (Page 11)

CompactLogix 5370 L2 Controllers 11
Rockwell Automation Publication 1769-IN090A-EN-P - April 2012
Consider these points before completing the steps in this section:
• An external power supply must reside in the same enclosure as the
CompactLogix 5370 L2 controller.
If the external power supply and controller are located in separate
enclosures, an electrical arc can occur when power is applied.
• Not all Class 2 or SELV-listed power supplies are certified for use in all
applications, for example, use in both nonhazardous and hazardous
environments.
Before installing an external power supply, consult all specification and
certification information to verify that you are using an acceptable
external power supply.
• You must wire power according to the wiring specifications, for example,
the maximum screw torque on a power supply terminal, listed in the
CompactLogix 5370 L2 Controllers Product Information Sheet,
publication
1769-PC010 .
Complete these steps to connect power to the CompactLogix 5370 L2
control system.
1. Verify that the external power supply is installed properly.
2. If appropriate, verify that the power setting on the supply is configured
to match the voltage source and that the supply is not powered.
3. Connect a wire to a +24V DC terminal on the external power supply.
4. Strip 8 mm (0.31 in.) insulation from the end of the wire that you will
connect to the +24VDC terminal on the controller.
WARNING: If you connect or disconnect wiring while the field-side 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.