Rockwell Automation Publication 6181X-IN002D-EN-P - February 2020
17
Industrial Computers for Hazardous Locations
Connect Power
Display and non-display computers have a DC input terminal block for connection to an
18…32V DC power source.
Operate the computer in an industrial or control room environment, which uses some form of
power isolation from the public low-voltage mains.
The DC power option supports operation from safety extra low voltage (SELV) power source.
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 power wires meet the requirements in the table in
.
3.
Secure the DC power wires to the terminal block by tightening the terminal block screws
to the torque value listed in the table in
Installation Guidelines on page 8
.
ATTENTION:
When you connect power to the computer for the first time, these actions occur:
• The default BIOS setting automatically starts the computer after it is plugged into a power
source.
• You must read and accept an End-User Setup procedure for computers with a Windows
operating system.
Do not disconnect power from the system until after the Windows Setup procedure is completed.
Disconnecting power during this procedure can result in a corrupted system image.
ATTENTION:
Supply the computer circuit with its own disconnect. Use an uninterruptible power
source (UPS) to help protect against unexpected power failure or power surges.
Always shut down the Windows operating system before disconnecting power to the computer to
minimize performance degradation and operating system failures.
ATTENTION:
Use a 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.
IMPORTANT
A functional ground connection is required for EMC compliance.
-V +V
