AC08 and AC12 Operations Manual....
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8.3 STATUS WORD, cont.
INV TST OK Inverter tests OK. Proper switching action taking place in power stages.
Does not mean output voltage is correct yet. A “1” when operating.
PFC ENABLE The PFC stages have been enabled by the logic. Is a “0’ when the system is
off, turns to “1” at the end of the “walk-in” stage.
PFC TST OK The PFC tests OK when a “1” is indicated. The PFC ENABLE bit (see
above) must be set to “1” first.
SP1_OK Shore power #1 is acceptable for use by the system when a “1” is indicated.
Voltage only is checked, not frequency.
V OUT OK Hardware has determined that the output voltages are acceptable for use
when a “1” is indicated. Frequency is not checked.
INV OT Inverter or Power Supply (PFC) has over-temped and has caused a shutdown.
Should normally be a “0.”
PFC OT Incorporated into the INV OT bit (see above).
XFMR OT Not used at this time. Reserved for transformer over-temp.
SPARE Spare
SP1 LOW The logic has determined the shore power input is in the low range, 180-
260VAC when a “1” is indicated. Used for voltage range control relay.
K1 ENABLED Should indicate a “1” when the system is in the walk-in state, for
approximately 1 second after the start of the inverter start sequence.
K3 ENABLED The output contactor has been commanded to close when a “1” is indicated.
The inverter voltage must be in an acceptable range and the ships power
button is pressed.
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