Fuji Electric FRENIC-HVAC User Manual page 135

(4) Protective functions
Item monitor
displays:
AC fuse blown ACF
AC overvoltage AOV
AC undervoltage ALV
AC overcurrent AOC
AC input current error ACE
Input phase loss LPV
Synchronous power FrE
frequency error
DC fuse blown dCF
DC overvoltage dOV
DC undervoltage dLV
Charging circuit fault PbF
Heat sink overheat OH1
External alarm OH2
Converter internal OH3
overheat
Converter overload OLU
LED
Description
Stops the converter output if the AC fuse
(R-/T-phase only) is blown.
Stops the converter output upon detection of an
AC overvoltage condition.
Stops the converter output upon detection of an
AC undervoltage condition.
Stops the converter output if the peak value of
the input current exceeds the overcurrent level.
Stops the converter output upon detection of the
excessive deviation of the AC reactor from the
AC input.
Stops the converter output upon detection of an
input phase loss.
After the MC for charging circuit (73) is turned
on, the converter checks the power frequency. If
it detects a power frequency error, this function
stops the converter output. An error during
converter running (e.g., momentary power
failure) triggers no alarm.
Stops the converter output if the DC fuse (P
side) is blown.
Stops the converter output upon detection of a
DC overvoltage condition.
If a power failure continues for a long time and
the control power source is shut down, this
alarm is automatically reset.
Stops the converter output upon detection of a
DC undervoltage condition.
If a power failure continues for a long time and
the control power source is shut down, this
alarm is automatically reset.
Stops the converter output upon detection of a
charging circuit fault, provided that the
answerback signal from 73 is enabled.
Stops the converter output upon detection of a
heat sink overheat.
Stops the converter output upon receipt of an
external signal THR.
Stops the converter output upon detection of an
internal overheat of the converter.
Stops the converter output with the inverse-time
characteristics due to the input current.
4-19
4.4 Options
Remarks
18.5 kW(25HP) or
above
230 V class series:
400 V ±3 V
460 V class series:
800 V ±5 V
230 V class series:
Stops at 185 V,
restarts at 208 V.
460 V class series:
Stops at 371 V,
restarts at 417 V.
Condition: 73ANS
(Answerback from 73)
is assigned to terminal
[X1].
Condition: THR
(Enable external alarm
trip) is assigned to
terminal [X1].
Activate at 105%,
150% for 1 min