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G10 Installation Guide 7.13.2
112
C
Rev. 005-140228
12.
Check the PEM LEDs (see
Figure C.2
) and take the appropriate actions as
listed in
Table C.1
.
Figure C.2 - PEM LEDs
Applying reverse power causes damage to the electrolytic capacitors of the filter. Therefore,
switch on the breakers only if no red light is visible.
13.
Switch the breaker to the ON position.
14.
Verify that the green BP LED (on the right) is lit.
Replacing an AC PEM
Perform the following steps to replace an AC PEM.
Step
Action
1.
Put on an ESD wrist strap.
Electrostatic discharge can damage circuits or shorten their life. Before touching the blade
or electronic components, ensure that you are working in an ESD-safe environment.
Table C.1 - G10 DC PEM LEDs
PEM LEDs
Status
Reverse
LED (red) ON
In
LED (green) OFF
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).
Reverse
LED (red) OFF
In
LED (green) OFF
Do not switch on the breaker while the
In
LED stays off.
Reverse
LED (red) OFF
In
LED (green) ON
The power is connected correctly. You may switch on the
breaker now.
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