Fuji Electric FRENIC MEGA G2 Series - 6 ] Ecl Customizable Logic Error; 7 ] Ef Ground Fault Protection (FRN0032 G2 S-2 G;FRN0018 G2□-4 G or Above); 8 ] Er1 Memory Error

6.3 If an Alarm Code Appears on the LED Monitor
6-10
[ 6 ] ECl Customizable logic error
Phenomenon: A customizable logic setting error was detected.
Possible cause
Check and measures
(1) Setting of the selection of
customizable logic operation
was changed during operation.
Check whether the selection (Function code U00) of customizable logic
operation is changed during operation.
➔ Do not change the selection of customizable logic operation during
operation to prevent a danger.
[ 7 ] ef Ground fault protection (FRN0032G2S-2G/FRN0018G2□-4G or above)
Phenomenon: Ground-fault current flowed from the inverter output terminals.
Possible cause
Check and measures
(1) Ground faults have occurred at
the inverter output terminals.
• Disconnect the wiring from the output terminals (U, V, and W) and
perform a Megger test.
➔ Remove the grounded parts (including replacement of the wires,
relay terminals and motor).
• If ground fault protection is displayed when the inverter is run with the
wiring disconnected from the inverter output terminals (U, V, and W).
➔ The inverter may be faulty. Contact your Fuji Electric representative.
The purpose of this ground fault protection is to protect the inverter. If used to prevent accidents involving
the human body, or to prevent fire, connect a separate earth leakage protective relay or earth leakage
circuit breaker.
[ 8 ] er1 Memory error
Phenomenon: Error occurred in writing the data to the memory in the inverter.
Possible cause
Check and measures
(1) When writing data (especially
initializing or copying data), the
inverter was shut down so that
the voltage to the control PCB
has dropped.
Initialize data by data initialization (H03), and check whether an alarm
can be released by key after finishing the initialization.
➔ Revert the initialized function code data to their previous settings,
then restart the operation.
(2) The inverter was affected by
strong electrical noise when
writing data (especially
initializing).
Check if appropriate noise control measures have been implemented
(e.g., correct grounding and routing of control and main circuit wires).
Also, perform the same check as described in (1) above.
➔ Implement noise control measures. Revert the initialized function
code data to their previous settings, then restart the operation.
(3) The control PCB failed.
Initialize data by data initialization (H03), and check whether an alarm
continues even when the release of the alarm is attempted by key
after finishing the initialization.
➔ The control PCB (on which the CPU is mounted) is defective.
Contact your Fuji Electric representative.
(4) The power was cut and the
control power supply dropped
while saving user setting values
with function code H193.
Save the user setting values with function code H193, and confirm
whether the alarm persists even after canceling the alarm with the
key when saving is complete.
➔ The control PCB (on which the CPU is mounted) is defective.
Contact your Fuji Electric representative.
(5) The inverter was affected by
external noise while saving user
setting values with function code
H193.
Check if appropriate noise control measures have been implemented
(e.g., correct grounding and routing of control and main circuit wires).
Also, perform the same check as described in (4) above.
➔ The control PCB (on which the CPU is mounted) is defective.
Contact your Fuji Electric representative.