Yaskawa V7 Drives - Manual (Page 117)

6-7
Fault Display
Digital RUN (Green)
Drive
Explanation
Causes and
Operator ALARM (Red)
Status Corrective Actions
CPF-05 Cycle power.
A/D converter fault is If the fault remains,
detected. replace the drive.
CPF-06 Remove power to the
Option card connecting fault drive.
Check the connection
of the digital operator.
CPF-07 Cycle power after checking
Operator control circuit the digital operator is
(EEPROM or A/D securely mounted.
converter) fault If the fault remains,
replace the digital operator
or drive.
OPR (Operator Cycle power.
connecting fault) If the fault remains,
replace the drive.
CE (MODBUS Check the communication
communications fault) devices or communication
signals.
PF (Input Phase Loss) Check input voltage.
Drive input power supply Tighten terminal screws.
has an open phase or has Check input voltage.
a large imbalance of voltage.
LF (Output Open Phase) Check the wiring to the
An open phase occurred motor.
at the Drive output. Check motor for phase to
ground short.
Check motor impedance.
RH (Dynamic Braking
Resistor)
Table 6-2. Fault Displays and Corrective Actions - Continued
Protective
Operation.
Output is
shut OFF
and motor
coasts to a
stop.