6.1 Fault Detection
YASKAWA ELECTRIC
TOEP C710656 01C YASKAWA - RC5 Instruction Manual
51
OL
Input Over Loaded
Power Regenerative Unit Input
Overload
Power regenerative unit input exceeded
the overload capacity.
The load is too heavy.
Check the size of the load.
EF3
External Fault 3
External fault
(terminal S3-SC)
An external fault was input from a
multi-function input.
• Reset external fault inputs to the
multi-function inputs.
• Remove the cause of the external
fault.
EF4
External Fault 4
External fault
(terminal S4-SC)
OPR
Oper Disconnect
Operator Connection Fault
The Operator was disconnected during
operation started by a run command
from the Operator.
—
Check the Operator connection.
ERR
EEPROM R/W Err
EEPROM Write Error
—
A verification error occurred when
writing EEPROM.
Try turning the power supply off and on
again.
Try setting the constants again.
CPF00
COM-ERR (OP&CONV)
Control Circuit Error 1
(Operator Communications Error)
• Communications with the digital
operator were not established within 5
seconds after the power was turned
on.
• MPU peripheral element check fault.
• Disconnect the digital operator and
then connect it again.
• Check the wiring of the control circuit
power supply.
• Replace the control card.
CPF01
COM-ERR (OP&CONV)
Control Circuit Error 2
(Operator Communications Error)
• After communications were
established, there was a transmission
error with the digital operator for
more than 2 seconds.
• MPU peripheral element check fault
• Disconnect the digital operator and
then connect it again.
• Check the wiring of the control circuit
power supply.
• Replace the control card.
CPF02
BB Circuit Err
Baseblock Circuit Error
The control circuit is damaged.
Replace the control card.
CPF03
EEPROM Err
EEPROM Error
CPF04
Internal A/D Err
CPU Internal A/D Converter Error
Fault Display
Meaning
Probable Causes
Corrective Actions