09/01 AWB8230-1412GB
105
8 Fault correction
Fault Condition Possible cause Remedy
The motor will not
start.
There is no voltage
present at outputs U,
V and W.
Is voltage applied to terminals L, N and/or 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 ……)?
Analyze the cause of the fault signal (a Section
”Messages”, Page 103). Acknowledge the fault
message with the reset command (e.g. by pres-
sing the OFF key).
Has a start command been issued? Issue the start command with the ON key or
through the FWD/REV input.
Has a frequency setpoint value been entered
under PNU F01 (keypad operation only)?
Enter a frequency setpoint value under PNU F01.
Are the setpoint definitions via the potentiometer
correctly wired to terminals H, O and L?
Check that the potentiometer is connected
correctly.
Are inputs O 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 5
(default setting: RST).
Has the correct source for the frequency setpoint
(PNU A01) been set?
Has the correct source for the start command
(PNU A02) been set?
Correct PNU A01 accordingly.
Correct PNU A02 accordingly. (a Section
”Setting the frequency and start command para-
meters”, Page 78 )
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 rotation).
Are the control signal terminals correctly wired? Use control signal terminal FWD for clockwise
rotation, REV for anticlockwise rotation.
Has PNU F04 been correctly configured? Set the required direction of rotation under
PNU F04.
The motor will not
start.
–
A setpoint value is not present on terminal O
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 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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