KITO Harrington RY Series, Owner'S Manual

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Table 7-7 "Error" Display Details and Remedies (Continued)
LED Display Error name
CPF08
EEPROM serial communication error
Failure with the EEPROM
Cause Measure
Failure between the terminal board and
control board -Turn off the power supply of the VFD, and re-connect the control circuit
terminal.
LED Display Error name
CPF11
RAM error
RAM error
CPF12
Flash memory error
ROM (flash memory) error
CPF13
Watchdog error
Self diagnosis error
LED Display Error name
CPF14
Control circuit error
CPU failure (malfunction of CPU due to noise)
CPF16
Clock error
Reference clock error
CPF17
Interrupt error
Timing of internal processing was erroneous
CPF18
Control circuit error
CPU failure (malfunction of CPU due to noise)
CPF19
Control circuit error
CPU failure (malfunction of CPU due to noise)
or
CPF20 or 21
Any of the following errors occurred: RAM error/ FLASH error/
watchdog circuit
Cause Error name
CrST
Reset disabled while a driving command is being input
A reset signal was input with the driving command being input from an
external terminal, etc.
Cause Measure
Unstable power supply, big voltage drop,
loosened power wiring, loosened wiring of
the emergency stop button
Check the power supply voltage and the wiring to the inverter.
LED Display Error name
to EF1 to EF7
External error (Input terminal S1 to S7)
An external error was inputted from the multifunction contact input
terminal (S1 to S7)
Cause Measure
The alarm function of the external
equipment is operating. -Remove the cause of the external error, and remove the external error
input of the multifunction input.
Wiring is not correct.
Check if the signal line is connected correctly.
-Connect the signal line correctly.