Technical Information
61
PW 6xx7
MDU fault # Possible cause Notes Indication in EW 235
display
Fault/Information
F4253 FEHLER_FU_TRIP,
EFU fault, short
circuit
Washer. Fault in EFU 235. Fault
registered from frequency
converter control EFU. Short
circuit, total current in circuit >
47A for longer than 62.5 µs.
Impermissibly high drive motor
current.
“Drive system fault!”
F4254 FEHLER_FU_UEBE
RSPANNUNG,
EFU fault, excess
voltage
Fault registered from frequency
converter control EFU 235.
Voltage in EFU 235 circuit is too
high ( > 850VDC).
Fault
F4255 FEHLER_FU_UNTE
RSPANNUNG,
EFU fault, low voltage
Fault registered from frequency
converter control EFU 235. EFU
235 input voltage < 320V
eff
.
Phase is missing. Fuse has
tripped.
Fault
F4256
FEHLER_FU_UEBE
RLASTUNG,
EFU fault, overload,
too much power at
EFU
Washer. Fault registered from
frequency converter control
EFU 235. EFU 235 circuit
power > 5kW for an
impermissible period of time.
“Drive system fault!” Fault
F4257
FEHLER_FU_NETZU
NTERBRECHUNG,
EFU fault, power
failure
Washer. Fault registered from
frequency converter control
EFU 235. Input voltage EFU
235 is missing.
“Drive system fault!” Fault
F4258
FEHLER_FU_OFFSE
T, EFU fault, current
sensors
Washer. Fault registered from
frequency converter control
EFU 235. EFU 235 current
monitoring indicating
impermissible values. One or
more current sensors defective.
“Drive system fault!” Fault
F4259
FEHLER_FU_UEBE
RTEMPERATUR_IG
BT, EFU fault, excess
temperature at power
output stage
Fault registered from frequency
converter control EFU 235. The
temperature at the heat sink of
the power output stage (IGBT)
of the EFU 235 has exceeded
90°C (194°F).
“Drive system fault!” Fault
F4260
FEHLER_FU_UEBE
RSTROM,
EFU fault, excess
drive motor current
Fault registered from frequency
converter control EFU 235.
Peak motor current at M5 > 38A
for time t > 1.5 s.
“Drive system fault!” Fault
F4261
FEHLER_FU_TACH
O, EFU fault, tacho
signal
Fault registered from frequency
converter control EFU 235.
Tacho impulse from
tachogenerator G1 is missing or
detected as faulty.
“Drive system fault!” Fault
F4262
FEHLER_FU_ID,
EFU fault, unknown
control ID
Fault registered from frequency
converter control EFU 235. EFU
control does not recognize the
software ID of the ELP 235.
“Drive system fault!” Fault
F4263
FEHLER_FU_PARIT
Y, EFU fault,
communication
fault between EFU
and ELP
Fault registered from frequency
converter control EFU 235. A
parity fault (a type of
transmission fault occurring with
data transmission) has occurred
during communication between
EFU 235 and ELP 235.
“Drive system fault!” Fault
F4264
FEHLER_FU_OVER
RUN, EFU fault,
communication fault
between EFU and
ELP
Fault registered from frequency
converter control EFU 235. An
overrun fault (a type of
transmission fault occurring with
data transmission) has occurred
during communication between
EFU 235 and ELP 235.
“Drive system fault!” Fault
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