Alpha 6000S series User Manual page 172

Fault
Name of Protection
Display
Output phase loss or
SP0
imbalance
CCF1 Control circuit fault 0
CCF2 Control circuit fault 1
CCF3 EEPROM fault
CCF4 AD conversion fault
CCF5 RAM fault
CCF6 CPU disturbance
PCE Parameter copying error
HE Current detection fault
Notes:
①The small/medium-power inverters (Type 3022G/3030P and the below) have not the Uu2 fault
(undervoltage with the control circuit) and the Uu3 fault (poor charging circuit).
②Only the selectively-configured LCD keypads have the function of parameter copying, while the standard
LED keypads have not the function.
171
Possible Cause to Fault
 Output R,S & T phase loss
or imbalance
 Transmission between the
frequency and the keypad
cannot be established
within 5s after power is
supplied (when power is
just supplied)

The frequency and the
keypad communicate once
after power is supplied, but
the transmission fault
afterwards last for at least
2s (in operation)
 EEPROM fault with the
control panel of frequency
inverter
 AD conversion fault with
the control panel of
frequency inverter
 RAM fault with the control
panel of frequency inverter
 Serious disturbance
 MCU reading & writing
error with the control panel

The communication line is
connected reversely or the
dialing switch dials
incorrectly
 Error with the parameter
copying between the
keypad and EEPROM of
②
the control panel
 EEPROM of the control
panel is damaged
 Fault with the frequency
inverter current detection
circuit
 The Hall elements are
damaged
Chapter 6 Troubleshooting
Countermeasure
 Check the output
connection line
 Check the motor and
cable insulation
 Re-pull out and re-insert
the keypad
 Check the connection
line
 Replace the keypad
 Replace the control panel
 Replace the control panel
 Replace the control panel
 Replace the control panel
 Reset via the
STOP
RESET
button
 Add the power filter at
the power side
additionally
 Seek the technical
support
 Repeat the copying
operation
 Replace the control panel
 Seek the technical
support
 Replace the frequency
inverter

Seek the technical
support