•Your power cables connect to an appropriate DC supply in a manner that complies with your local electrical codes. For DC systems, a Main Disconnect must be provided.
•On the DC PEM(s), use a voltage meter to verify power on the cables. Also verify that the Voltage LED is green.
•A power supply blank is installed in any empty slot.
•Six fan trays are installed.
To test the power supplies and fan trays:
Step Task
1.With the fan trays and DC PEMs installed, power on the system.
• Flip the
2.PEM Status LEDs should be green.
If an LED is not lit or is amber, check that the unit is properly installed. Verify the power source. If the LED remains unlit, power off all modules and replace the unit.
3.All six fan tray LEDs should be green (online). Verify that air is flowing through the chassis.
If a fan tray is not operating properly or air is not flowing through the chassis, power off the chassis at the remote power source. Ensure that all fan trays are properly installed. Verify the remote power source. If a fan tray LED remains unlit, replace the fan tray.
4.After you have verified the power and fan operability, power off the chassis to continue the installation process.
5.
6.Verify that the LEDs are not lit.
48 | Installing DC Power Supplies |
