6-18
Possible Causes
What to Check and Suggested Measures
Check the cumulative running time of cooling fan. Refer to Chapter
3, Section 3.4.6 "Reading maintenance information – "Maintenance
Information"."
Î
Replace the cooling fan.
(6) The service life of the
cooling fan has expired
or the cooling fan
malfunctioned.
Visually check that the cooling fan rotates normally.
Î
Replace the cooling fan.
(7) The wires to the motor
are too long and caused
a large amount of
current to leak from
them.
Measure the leakage current.
Î
Insert an output circuit filter (OFL).
[ 12 ]
er1
Memory error
Problem
Error occurred in writing the data to the memory in the inverter.
Possible Causes
What to Check and Suggested Measures
(1) While the inverter was
writing data (especially
initializing data or
copying data), power
supply was turned OFF
and the voltage for the
control PCB dropped.
Check if pressing the
key resets the alarm after the function
code data are initialized by setting the data of H03 to "1."
Î
Return the initialized function code data to their previous
settings, then restart the operation.
(2) A high intensity noise
was given to the
inverter while data
(especially initializing
data) was being
written.
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.
Î
Improve noise control. Alternatively, return the initialized function
code data to their previous settings, then restart the operation.
(3) The control PCB failed.
Initialize the function code data by setting H03 to "1," then reset the
alarm by pressing the
key and check that the alarm goes on.
Î
The control PCB (on which the CPU is mounted) is defective.
Contact your Fuji Electric representative.