YASKAWA V7 Technical Manual page 116

Table 6-2. Fault Displays and Corrective Actions - Continued
Fault Display
Digital RUN (Green)
Operator ALARM (Red)
Drive
Explanation
Status
EF
(External fault)
Drive receives an
external fault input from
control circuit terminal.
EF0: External fault
reference through
MODBUS
communications
EF1: External fault
input command from
control circuit
terminal S1
EF2: External fault input
command from control
circuit terminal S2
EF3: External fault input
command from control
circuit terminal S3
EF4: External fault input
Protective command from control
Operation. circuit terminal S4
Output is EF5: External fault input
shut OFF command from control
and motor circuit terminal S5
coasts to EF6: External fault input
a stop. command from control
circuit terminal S6
EF7: External fault input
command from control
circuit terminal S7
CPF-00
Drive cannot
communicate with the digital
operator for 5 sec. or
more when power is
turned ON.
CPF-01
Transmission fault
occurred for 5 sec or more
when transmission starts
with the digital operator.
CPF-04
EEPROM fault of drive
control circuit is detected.
6-6
Causes and
Corrective Actions
Check the external circuit
(sequence).
Cycle power after checking
the digital operator is
securely mounted.
If the fault remains,
replace the digital operator
or drive.
Cycle power after checking
the digital operator is
securely mounted.
If the fault remains,
replace the digital operator
or drive.
• Record all parameter
data and initialize the
constants. (Refer to
paragraph 5.__ for
constant initialization.)
• Cycle power.
If the fault remains,
replace the drive.