Emerson Centellis 2000 Shelf Release 3.0 Manual page 81

9. Check the PEM LEDs and take the appropriate actions as listed in the table below.
PEM LEDs
Reverse LED (red) on
In LED (green) off
Reverse LED (red) off
In LED (green) off
Reverse LED (red) off
In LED (green) on
10.Verify that the green BP LED (on the right) is lit.
Centellis 2000 Shelf Release 3.0 Installation and Use (6806800L99F)
Status
Do not switch on the breaker while the Reverse LED is on.
Reason: The power connected is reversed.
Action: Turn off the feed power and attach the power cables at the
power connector with the correct orientation (-48V, Return).
Do not switch on the breaker while the In LED stays off.
For possible reasons and solutions, see
The power is connected correctly. You may switch on the breaker now.
FRU Installation
Appendix A, After Power On.
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