FujiFilm Frenic-Mini Instruction Manual page 132

OH2
[ 7 ] External alarm input
Problem External alarm was inputted (THR).
Possible Causes
(1) An alarm function of the
external equipment was
activated.
(2) Connection has been
performed incorrectly.
(3) Incorrect settings.
OH4
[ 8 ] PTC thermistor for motor protection
Problem Temperature of the motor rose abnormally.
Possible Causes
(1) Temperature around the
motor exceeded that of
motor specifications.
(2) Cooling system for the
motor malfunctioned.
(3) Load was too heavy.
(4) The set activation level
(H27) of the PTC
thermistor for motor
overheat protection was
inadequate.
(5) A PTC thermistor and
pull-up resistor were
connected incorrectly or
their resistance was
inadequate.
(6) The value set for the
torque boost (F09) was
too high.
(7) The V/f pattern did not
match the motor.
What to Check and Suggested Measures
Inspect external equipment operation.
Remove the cause of the alarm that occurred.
Check if the wire for the external alarm signal is correctly
connected to the terminal to which the "Alarm from external
equipment" has been assigned.
Connect the wire for the alarm signal correctly.
Check if the "Alarm from external equipment" has been
assigned to an unassigned terminal.
Correct the assignment.
What to Check and Suggested Measures
Measure the temperature around the motor.
Decrease the temperature.
Lighten the load.
Check if the cooling system is operating normally.
Repair or replace the cooling system.
Measure the output current.
Lighten the load (e.g., lighten the load before overload
occurs using the overload early warning (E34) function).
Decrease the temperature around the motor.
Increase the carrier frequency (F26).
Check the thermistor specifications and recalculate the
detection voltage.
Reconsider the data of function code H27.
Check the connections and resistance.
Correct the connections and resistance.
Check the data of function code F09 and readjust the data so
that the motor does not stall even if you set the data to a
lower value.
Change the data of the function code.
Check if the base frequency (F04) and rated voltage (at base
frequency) (F05) match the values on the nameplate on the
motor.
Match the function code data to the values on the
nameplate of the motor.
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