Troubleshooting Tips
The table below lists typical symptoms and the corresponding solution
(
s
)
.
Symptom/condition
Probable Cause
Solution
x
Is the frequency command source
A001 parameter setting correct?
x
Is the Run command source A002
parameter setting correct?
x
Make sure the parameter
setting A001 is correct
x
Make sure the parameter
setting A002 is correct
x
Is power being supplied to terminals
[
L1
]
,
[
L2
]
, and
[
L3/N
]
? If so, the
POWER lamp should be ON.
x
Check terminals
[
L1
]
,
[
L2
]
,
and
[
L3/N
]
, then
[
U/T1
]
,
[
V/T2
]
, and
[
W/T3
]
.
x
Turn ON the power supply or
check fuses.
x
Is there an error code
E X X
displayed?
x
Press the Func. key and
determine the error type.
Eliminate the error cause,
then clear the error
(
Reset
)
.
x
Are the signals to the intelligent
input terminals correct?
x
Is the Run Command active?
x
Is the
[
FW
]
terminal
(
or
[
RV
])
connected to
[
PCS
] (
via switch, etc.
)
x
Verify the terminal functions
for C001–C005 are correct.
x
Turn ON Run Command
enable.
x
Supply 24V to
[
FW
]
or
[
RV
]
terminal, if configured.
x
Has the frequency setting for F001
been set greater than zero?
x
Are the control circuit terminals
[
H
]
,
[
O
]
, and
[
L
]
connected to the
potentiometer?
x
Set the parameter for F001 to
a safe, non
-
zero value.
x
If the potentiometer is the
frequency setting source,
verify voltage at
[
O
]
> 0V.
The inverter
outputs
[
U
]
,
[
V
]
,
[
W
]
are not
supplying
voltage
x
Is the RS
(
reset
)
function or FRS
(
free
-
run stop
)
function ON?
x
Turn OFF the command
(
s
)
Inverter
outputs
[
U
]
,
[
V
]
,
[
W
]
are
supplying
voltage.
x
Is the motor load too heavy?
x
Reduce the load, and test the
motor independently.
The motor
will not run
The optional
remote
operator is
used
(
SRW
)
.
x
Are the operational settings
between the remote operator and
the inverter unit correct?
x
Check the operator type
setting.
x
Are the connections of output
terminals
[
U/T1
]
,
[
V/T2
]
, and
[
W/T3
]
correct?
x
Is the phase sequence of the motor
forward or reverse with respect to
[
U/T1
]
,
[
V/T2
]
, and
[
W/T3
]
?
x
Make connections according to
the phase sequence of the
motor. In general
:
FWD = U
-
V
-
W, and REV=U
-
W
-
V.
The direction of the motor is
reversed
x
Are the control terminals
[
FW
]
and
[
RV
]
wired correctly?
x
Is parameter F004 properly set?
x
Use terminal
[
FW
]
for
forward, and
[
RV
]
for reverse.
x
Set motor direction in F004.
6
3
T
roubleshooting and
Maintenanc
e
6
−
3
T
roubleshooting and
Maintenance
