Omron KP100L-OD - 12-2010 User Manual page 78

[10] Setup level for control of the grid voltage increasing
This is a function to prevent increasing of the grid voltage by controlling the output current when the grid voltage
increases. This function can control the voltage of the inverter terminal before reaching OV level.
Setup level for control of the grid voltage increasing can decide the level of the grid voltage that controls the
output current. The level for control of the grid voltage increasing is a level which decreases Setup level from the
OV level.
The voltage of
the inverter terminal : Vo
Vo = Vgrid + Z x Io
Vo is higher than Vgrid
OV level
The voltage of the inverter
[11] Setup of Output Signal 1
The output mode of "External output signal 1 (AUX_OUT1)" is set.
Set the output mode of signal according to the occurring error.
Refer to " Appendix -1 Error list " for the error that occurs when each MODE is set.
[12] Setup of Output Signal 2
The output mode of "External output signal 2 (AUX_OUT2) is set. Refer to the following table.
MODE
MODE1
(synchronization mode with grid
relay)
MODE2
(synchronization mode with
communication)
Grid Connect Photovoltaic Inverter KP100L-OD- USER'S MANUAL
The grid impedance : Z
The output current : Io
If the voltage of the inverter is higher than threshold,
inverter control the voltage by reducing output current
[An example]
The voltage level for control of grid voltage increasing becomes
251V when the OV level is 253V, and Setup level for control of
grid voltage increasing is -2.0V.
Description
The signal is output
synchronizing with the state of
Grid relay.
The signal is output
synchronizing with the state of
the communication.
The grid voltage : Vgrid
Setup level for control
of grid voltage increasing
Time
State
Grid relay  ON
Grid relay  OFF
Communication  Possible
Communication  Impossible
3 Operation
3
the
9
Output of
Relay
ON
OFF
ON
OFF
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