6-12
[ 5 ]
0pl
Output phase loss protection
Problem Output phase loss occurred.
Possible Causes What to Check and Suggested Measures
(1) Inverter output wires are
broken
Measure the output current.
Replace the output wires.
(2) Wire for motor winding are
broken
Measure the output current.
Replace the motor.
(3) The terminal screws for
inverter output were not
tight enough.
Check if any screw on the inverter output terminals has
become loose.
Tighten the terminal screws to the recommended torque.
(4) A single-phase motor has
been connected
Single-phase motors cannot be used. Note that the
FRENIC-Mini only drives three-phase induction motors.
[ 6 ]
0h1
Overheat protection for heat sink
Problem Temperature around heat sink rose.
Possible Causes What to Check and Suggested Measures
(1) Temperature around the
inverter exceeded that of
inverter specifications.
Measure the temperature around the inverter.
Lower the temperature around the inverter (e.g., ventilate
the panel well).
Lighten the load.
Check the cumulative running time of the cooling fan. Refer to
Chapter 3, Section 3.2.2 [5], "Reading Maintenance
Information."
Replace the cooling fan.
(2) Accumulated running time
of the cooling fan
exceeded the standard
period for replacement, or
the cooling fan
malfunctioned.
Visually check that the cooling fan rotates normally.
Replace the cooling fan.
Check if there is sufficient clearance around the inverter.
Increase the clearance.
(3) Air vent is blocked.
Check if the heat sink is not clogged.
Clean the heat sink.
(4) Load was too heavy. Measure the output current.
Lighten the load (e.g. lighten the load before the overload
protection occurs using the overload early warning (E34).
Decease the motor sound (carrier frequency) (F26).
Enable the overload protection control (H70).
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