Manual Energy Storage Inverter ESI-S
Operating instructions 161
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The start-up sequence consists of the DC capacitors voltage check, the closure of
the inverter AC contactor, the start of fan and the starting of the IGBTs
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If harmonics mitigation feature is activated, the network identification may be
done after the start-up sequence has finished. This network identification will
always be done when harmonic components were selected and the supply to the
inverter was removed before or when new harmonic components have been
selected. The network identification may also be done automatically during
normal inverter operation if the inverter controller has noted a big change of
network impedance.
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At the end of the start-up procedure, the inverter will work as programmed
Remark: if power quality features are enabled and the inverter running at 100% load
while RMS current rating is not attained.
Under exceptional conditions it is possible that the inverter is showing a 100% load
indication whereas its nominal RMS current rating is not yet attained. This is because
the inverter has reached an operating limit other than the RMS current limit. Possible
other limits are:
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Temperature limit due to a too high ambient temperature or a failing cooling
system
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Peak current limit due to an a-typical peak current requirement of the load
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Peak voltage limit due to an a-typical DC-link voltage requirement of the load or
due to a high network voltage
Under all these conditions, the inverter will run in limited mode and may not attain 100%
of its nominal current rating.
9.2.2 Stopping the inverter with the ESI-Manager
In order to stop the system with the ESI-Manager follows the instructions given below:
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Press
on the ESI-Manager repeatedly until the ‘Welcome’ screen is
displayed
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Highlight the inverter ‘start/stop’ menu (‘ESI’ item in the list). In this menu, the
‘STOP’ indication should be present.
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Press
. The inverter will ask confirmation and then it will stop. The main
contactor will open.
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The ‘STOP’ indication in the start/stop menu changes in a ‘START’ indication once
the inverter is stopped
Remarks:
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If the ‘start/stop’ menu reads ‘ACK. FAULT’ (i.e. ‘acknowledge fault’), the inverter
has encountered a fault. Refer to
for troubleshooting
the problem.
