Rockwell Automation 6155F-NPXPDC Compact Non-display Computers - Manual (Page 14)

14 Compact Industrial Non-display Computers
Rockwell Automation Publication 6155R-IN002E-EN-P - July 2013
Connect DC Power
Computers with a catalog number ending in DC have a DC input terminal block for connecting
to a 9…36V DC power source.
The DC power option supports operation from either a Safety Extra Low Voltage (SELV) or
Protective Extra Low Voltage (PELV) power source. A pre-installed ground bus strip connects
the DC common and functional ground terminals together. This is to support SELV cases where
the end user requires grounding at the computer.
Follow these steps to connect the computer to a DC power source.
1. Turn off the main power switch or breaker.
2. Secure the DC power wires to the terminal block screws.
3. Secure the DC ground wire to the GND terminal screw.
4. Apply 9…36V DC power to the computer.
ATTENTION: Use a Class 2 Safety Extra Low Voltage (SELV) isolated and ungrounded power
supply as input power to the computer. This power source provides protection so that under
normal and single fault conditions, the voltage between the conductors and functional
earth/protective earth does not exceed a safe value.
9…36V DC
+V
Pre-installed
Bus Strip
-V
GND