Manual Energy Storage Inverter ESI-S
Electrical design and installation 61
Network imbalance
unacceptably high
Vimbalance > 2%
Frequency variation
unacceptably high
Frequency variation > 20%/s
ESI-S DC bus voltage
unacceptably high
Vdc > 105% Vdc_max_allowed for each capacitor stack
ESI-S internal preload error
DC capacitor voltage rise too low in preload phase or the
DC capacitors could not be preloaded in an acceptable
time.
ESI-S over current fault
Internal current higher than allowed
ESI-S IGBT fault
IGBT hardware reports internal permanent error
ESI-S IGBT over temperature
IGBT hardware reports internal over temperature
Control board temperature too
high
Internal control board temperature probe reports too high
temperature
ESI-S internal power supply
fault
Internal control voltage too low or not present
ESI-S control board fault
Internal control board reports an error
ESI-S unit down (i.e. not
operational due to error)
Any of the units in a multi-unit arrangement is not running
although the start-command has been given.
Remark: the alarm trigger levels cannot be changed by the user.
For cabling the digital output contacts as alarm contact, the same approach as shown
in
and can be adopted. Note however that the following behavior will result:
−
The voltage applied to the external monitoring device will be low when:
•
The inverter is disconnected from the supply or when there is no error
−
The voltage applied to the external monitoring device will be high when:
•
The predefined error is present for the predefined time (minimum 180s)
AND
•
The external 24 Vdc power supply is in working order
The different electrical characteristics of the digital output contacts compared to the
alarm contact characteristics must be respected. Note also that all digital outputs have
the same common which is located at the pins 1 and 2 of the right hand terminal of the
ESI-Manager (rear view, counting from top to bottom). This is clearly indicated in
Once the cabling has been finished,
−
The auxiliary fuse box may be closed
−
The inverter top cover may be replaced including the connection of the ESI-
Manager to the master unit
−
The power to the inverter may then be restored
