12 Troubleshooting
12 - 38
High-function General-purpose Inverter RX2 Series User’s Manual
Motor rotates in a
reverse direction.
The wires connected to the motor
are in wrong phase sequence.
Swapping two phases of wires connected to the motor
changes the direction of rotation.
When the RUN key on the LCD
Operator is used, the rotation
direction setting is wrong.
[AA-12] RUN key direction needs to be switched.
When the 3-wire function is used,
the input of input terminal function
F/R is reversed.
Check the logic of 3-wire normal rotation / reverse rota-
tion terminal (018[F/R]).
Noises of motor
and machines are
noisy.
Carrier frequency is set low.
Raise the carrier frequency setting [bb101]. However,
this may increase noise generated in the inverter and
leakage currents from the inverter. In addition, derating
is required to the output current depending on the mod-
els.
The revolution frequency of motor
and the natural frequency of
machines resonate.
Change the set frequency. If a resonance occurs during
acceleration/deceleration, avoid the resonance fre-
quency in settings of the frequency jump functions
[AG101] to [AG106].
Output frequency
becomes unstable.
Inadequate parameters are used.
Find out the basic parameter settings for motor and set
them accordingly.
Load fluctuates significantly.
Re-examination of capacity of both motor and inverter
may be required.
PS voltage fluctuates.
Use of the optional reactor ALI or DCL, or a noise filter
on the input side to minimize the power fluctuation may
improve the situation.
Torque is not gen-
erated.
V/f control is used.
Use torque boost, sensorless vector control, or other
control instead.
The inverter is used for lowering.
Use a braking resistor or regenerative braking unit if
the torque is not sufficient for regenerative operation.
The load is too heavy.
Re-examination of capacity of both motor and inverter
may be required.
LCD operator dis-
connection error is
issued.
Operation selection at disconnec-
tion of operator is inappropriate.
Set the operation selection at disconnection of operator
to 02 (Ignore).
Occurrence
Estimated cause(s)
Exemplar measures to be taken
Summary of Contents for RX - 2
Page 1: ...High function General purpose Inverter RX2 Series User s Manual I620 E1 01 3G3RX2...
Page 54: ...1 Overview 1 22 High function General purpose Inverter RX2 Series User s Manual...
Page 136: ...2 Design 2 82 High function General purpose Inverter RX2 Series User s Manual...
Page 592: ...8 Applied Settings 8 192 High function General purpose Inverter RX2 Series User s Manual...
Page 754: ...11 Options 11 56 High function General purpose Inverter RX2 Series User s Manual...
Page 794: ...12 Troubleshooting 12 40 High function General purpose Inverter RX2 Series User s Manual...
Page 919: ......
