FujiFilm Frenic-Mini Instruction Manual page 134

OLU
[ 11 ] Overload protection
Problem Temperature inside inverter rose abnormally.
Possible Causes
(1) Temperature around the
inverter exceeded that of
inverter specifications.
(2) The service life of the
cooling fan has expired or
the cooling fan
malfunctioned.
(3) Air vent is blocked.
(4) Load was too heavy.
(5) The acceleration/
deceleration time was too
short.
(6) The wires to the motor
are too long and caused a
large amount of current to
leak from them.
E 1
[ 12 ] Memory error
Problem Error occurred in writing the data to the memory in the inverter.
Possible Causes
(1) The power supply was
turned off when the
inverter was writing data
(especially initializing
data), and the remaining
control circuit voltage was
not high enough to enable
writing of data.
What to Check and Suggested Measures
Measure the temperature around the inverter.
Lower the temperature (e.g., ventilate the enclosure well).
Lighten the load.
Check the accumulated running time of cooling fan (E52=2).
Refer to Chapter 3, Section 3.8 "Reading Maintenance
Information."
Replace the cooling fan.
Visually check that the cooling fan rotates normally.
Replace the cooling fan.
Check if there is sufficient clearance around the inverter.
Increase the clearance.
Check if the heat sink is clogged.
Clean the heat sink.
Measure the output current.
Lighten the load (e.g., lighten the load before overload
occurs using the overload early warning (E34)).
Decrease the carrier frequency (F26).
Enable overload protection control (H70).
Recalculate the required acceleration/deceleration torque and
time from the moment of inertia for the load and the
deceleration time.
Increase the acceleration/deceleration time (F07, F08,
E10, E11 and H54).
Measure the leak current.
Connect an output circuit filter (OFL).
What to Check and Suggested Measures
Check if pressing the
function code data are initialized by setting the data of H03 to
1.
Return the initialized function code data to their previous
settings, then restart the operation.
6-15
key resets the alarm after the