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Fault Display
Digital
RUN ALARM
Operator
(Green) (Red)
EF?
F00
F01
F04
Inverter
Explanation
Status
EF?
(External fault)
Inverter receives an
external fault input from
control circuit terminal.
EF0: External fault
reference through
MEMOBUS
communications
EF2: External fault input
command from control
circuit terminal S2
EF3: External fault input
command from control
Protective
circuit terminal S3
Operation
EF4: External fault input
command from control
Output is
circuit terminal S4
shut OFF
EF5: External fault input
and motor
command from control
coasts to
circuit terminal S5
a stop.
CPF-00
Initial memory
fault has detected.
CPF-01
ROM error has detected.
CPF-04
EEPROM fault of inverter
control circuit is detected.
Causes and
Corrective Actions
Check the external circuit
(sequence).
Cycle power.
If the fault remains,
replace the inverter.
Cycle power.
If the fault remains,
replace the inverter.
• Record all constant
data and initialize the
constants. (Refer to
page 36 for constant
initialization.)
• Cycle power.
If the fault remains,
replace the inverter.
93
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