Rockwell Automation 6155F-NPWEDC Compact Non-display Computer - Manual (Page 22)

22 Rockwell Automation Publication 6155R-UM002E-EN-P - February 2014
Chapter 2 Installation
3. Connect the AC power cord to a power source.
4. Apply 100…240V AC power to the computer.
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.
DC power models support operation from either a SELV or PELV power source.
A pre-installed ground bus strip lets you connect the DC common and
functional ground terminals together. This is to support some cases of SELV
where grounding at the computer is required by the end user.
The power supply is internally protected against reverse polarity.
Follow these steps to connect the computer to a DC power source.
1. Turn off the main power switch or breaker.
2. Verify that the DC wires meet these requirements:
• Material: Stranded copper
• Wire gauge: 0.325…0.823 mm
2
(22…18 AWG)
3. Secure the DC power wires
to the correct terminal-
block screws, and the DC
ground wire to the GND
terminal screw.
Torque the terminal screws
to 0.687 N•m (6.1 lb•in).
4. Apply 9…36V DC power
to the computer.
SHOCK HAZARD: Connect the AC power cord to a power source with an
earth ground. Failure to follow this warning can result in electrical shock.
ATTENTION: Use a Class 2/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