IMO Jaguar CUB, Instruction Manual, Page: 131 / 170

6-13
[ 7 ]
OH2
External alarm input
Problem External alarm was inputted (THR).
Possible Causes What to Check and Suggested Measures
(1) An alarm function of the
external equipment was
activated.
Inspect external equipment operation.
Î
Remove the cause of the alarm that occurred.
(2) Connection has been
performed incorrectly.
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.
Î
Connect the wire for the alarm signal correctly.
(3) Incorrect settings. Check if the "Alarm from external equipment" has been
assigned to an unassigned terminal.
Î
Correct the assignment.
[ 8 ] OH4 PTC thermistor for motor protection
Problem Temperature of the motor rose abnormally.
Possible Causes What to Check and Suggested Measures
(1) Temperature around the
motor exceeded that of
motor specifications.
Measure the temperature around the motor.
Î
Decrease the temperature.
Î
Reduce the load.
(2) Cooling system for the
motor malfunctioned.
Check if the cooling system is operating normally.
Î
Repair or replace the cooling system.
(3) Load was too heavy. Measure the output current.
Î
Reduce the load (e.g., reduce the load before overload
occurs using the overload early warning (E34) function).
Î
Decrease the temperature around the motor.
Î
Increase the carrier frequency (F26).
R Check the thermistor specifications and recalculate the
detection voltage.
Î
Reconsider the data of function code H27.
(5) A PTC thermistor and
pull-up resistor were
connected incorrectly or
their resistance was
inadequate.
Check the connections and resistance.
Î
Correct the connections and resistance.
(6) The value set for the
torque boost (F09) was
too high.
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.
Î
Change the data of the function code.
(7) The V/f pattern did not
match the motor.
Check if the base frequency (F04) and rated voltage (at base
frequency) (F05) match the values on the nameplate on the
motor.
Î
Match the function code data to the values on the nameplate
of the motor.