01/02 AWB8230-1413GB
157
8 Troubleshooting
Fault
Condition
Possible cause
Remedy
The motor will not
start.
There is voltage
present at outputs U,
V and W.
Is voltage applied to terminalsL1terminals L1, L2
and L3?If yes, is the ON lamp lit?
Check terminals L1, L2, L3 and U, V, W. Switch
on the supply voltage.
Does the LED display on the keypad indicate a
fault (
E……
) an?
Analyze the cause of the fault signal (
a
section
“Messages”, page 151). Acknowledge the fault
message with the reset command (e.g. by
pressing the OFF key).
Has a start signal been issued?
Issue the start signal with the ON key or through
the FWD/REV input.
Has a frequency setpoint value been entered
under PNU F001 (keypad operation only)?
Enter a frequency setpoint value under
PNU F001.
Are the setpoint definitions through the
potentiometer correctly wired to terminals H, O
and L?
Check that the setpoint signal is correctly
connected.
Are inputs O, , O2 and/or OI correctly connected
for external setpoint definition?
Check that the setpoint signal is correctly
connected.
Are the digital inputs configured as RST or FRS
still active?
Deactivate RST and/or FRS.
Check the signal on digital input 1 (default
setting: RST).
Has the correct source for the frequency setpoint
(PNU A001) been set?
Has the correct source for the start command
(PNU A002) been set?
Correct PNU A01.
Correct PNU A02. (
a
section “Setting the
frequency and start signal parameters”,
page 107)
There is voltage
present at outputs U,
V and W.
Is the motor blocked or is the motor load too
high?
Reduce the load acting on the motor. Test the
motor without load.
The motor turns in
the wrong direction.
–
Are output terminals U, V and W correctly
connected? Does the connection of terminals U, V
and W correspond with the direction of rotation
of the motor?
Connect output terminals U, V and W correctly to
the motor according to the required direction of
motor rotation (generally the sequence U, V, W
causes clockwise operation).
Are the control signal terminals correctly wired?
Use control signal terminal FW(D) for clockwise
rotation, REV for anticlockwise rotation.
Has PNU F004 been configured correctly?
Under PNU F004, enter the required direction of
rotation.
The motor will not
start.
–
A setpoint value is not present on terminal O O,
O2 and/or OI.
Check the potentiometer or the external setpoint
generator and replace if necessary.
Is a fixed frequency accessed?
Observe the sequence of priority: the fixed
frequencies always have priority over the inputs
O, O2 and OI.
Is the motor load too high?
Reduce the motor load as the overload limit will
prevent the motor reaching its normal speed if
there is an overload.
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