Energy Storage Module Indicators
The following table describes the indicators on the energy storage module (ESM) as
shown in ESM Indicators. Note that each of the four ESMs have these LEDs.
Table 5 ESM Controls and Indicators
Ready to Remove LED (blue)
The ESM can be safely serviced.
Off – The ESM cannot be serviced,
a charge is present.
Caution - If the amber LED is on while the blue LED
is on, the ESM is faulty and is ready to remove.
An ESM fault has occurred.
Off – No ESM fault is present.
OK LED (green)
The ESM is charged and
Slow blink – The ESM is in the process of charging. This process can take up
to 10 minutes.
Fast blink – The ESM is in the process of discharging. The discharge process might take
up to 5 minutes to complete.
Off – The ESM is discharged and non-operational.
Caution - Do not remove
the ESM when the green LED is on or is blinking. Doing so
might result in data loss in the event of a power failure.
Figure 12 ESM Indicators
1 Ready to Remove LED (blue)
2 Fault LED (amber)
3 Status OK LED (green)