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DC Current
This is the input current measured after the 3-phase AC input has been rectified to DC. Idc = IREF / 9
This current should not exceed 58A.
Turbine Volts
This is the DC voltage of the input measured after the 3-phase AC input is rectified. The inverter will
begin exporting power when this voltage exceeds 85Vdc. This voltage should never exceed 690Vdc.
Vdc = Vac * 1.41
Output Power
This is how much real power in Watts the inverter is currently producing or consuming if it is waiting for
wind. Standby power while waiting for wind is about -10W. This measurement is not completely accurate
and may not agree with an external meter.
Accumulated Power
This is how much real power the inverter has produced or consumed since it was last calibrated at BWC.
This measurement is not completely accurate and may not agree with an external meter.
VREF
VREF is the input rectified voltage as a raw value. VREF = Vdc * 2.52.
Vref is used as an index look-up into a virtual table used for a customizable 32 point power curve table.
IREF
IREF is the current request in counts for a given DC input voltage tracked by VREF. Using this
configuration the inverter can be adjusted to provide any power curve required. IREF = Idc * 9
Last Fault
Fault messages are displayed when a fault occurs and when the last fault parameter is selected. The
following table is a list of possible faults that may be displayed.
7. Trouble Shooting
Fault Message
INTERNAL ERROR
DC OVER VOLT 1
DC OVER VOLT 2
DC UNDER VOLT
AC OVER VOLT
Fault
Description
Code
IGBT or control logic fault. An occurrence of this fault requires
that the unit be completely powered down to reset it. Frequent
10
code 10 faults indicate that the unit should be returned to BWC for
service.
The DC Bus voltage has exceeded its maximum threshold. This
occurs if the input power exceeds the output power. This may
1000
occur in exceptionally high winds especially if the OV Power limit
is active or temperature throttling is occurring.
The DC Input voltage has exceeded its maximum threshold. This
1500
may occur in exceptionally high wind conditions.
The internal DC Boost voltage has dropped below its minimum
1250
threshold. This usually indicates a configuration problem and is
normally never seen.
The AC line voltage has exceeded its maximum threshold. This
occurs if OV limiting was not able to prevent the high grid voltage.
2030
Site issues should be investigated such as loose grid side
connections, undersized wires or grid voltage flickers.
Page 10
1.405.364.4212 /
Operator's Manual & Installation Instructions
www.bergey.com
PowerSync II
Rev: 1.1
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