(3) Undervoltage (ALV, dLV)
Examine the power supply
system to satisfy the
specifications.
Undervoltage
ALV,dLV
Is there any defective device or
poor connection in the power
supply circuit?
Reset and restart operation.
Replace defective devices
and correct connection.
The converter may be
broken. Contact FUJI.
A converter control
circuit failure or
malfunction caused by
noise is probable.
Contact FUJI.
Is the DC (P-N) voltage of the main
circuit larger than the detection level
specified in Table 7.1-1?
Is this protective function
activated when the circuit
breaker or magnetic contactor
is turned ON?
Is the power supply
transformer capacity correct?
Is the source voltage within the
specified range?
YES
NO
NO
YES
YES
YES
NO
NO
NO
NO
YES
Examine the power
supply transformer
capacity.
NO
YES
YES
Does the charging circuit magnetic
contactor (73) go active only when
the power is turned on?
Check the sequence circuit of
the charging circuit magnetic
contactor.
NO
YES
Was there a power failure (incl.
momentary one)?
Is there any load requiring a large
starting current in the same power
supply system?
(4) Overheat inside converter (OH3), heat sink overheat (OH1)
Is the cooling airflow path
blocked?
Is the load too large?
Is the ambient temperature
within the specified range?
Is the cooling fan
rotating?
Improve the environment to
keep the ambient
temperature within the
specified range.
Reduce the load.
Converter failure or
malfunction caused by
noise is probable.
Contact FUJI.
Remove obstacles.
Replace the cooling fan.
YES
YES
YES
YES
NO
NO
NO
NO
Overheat inside
converter
OH3
Heat sink overheat
OH1
7-5
Содержание RHC-D 690V Series
Страница 8: ...Location of General Precaution and Warning Labels PWM Converter RHC D Series vi...
Страница 153: ...10 3 External Dimensions Rank 3 Converter stack RHC132S 69DE RHC160S 69DE RHC200S 69DE 10 4...
Страница 154: ...Rank 4 Converter stack RHC250S 69DE RHC280S 69DE RHC315S 69DE RHC355S 69DE RHC400S 69DE RHC450S 69DE 10 5...