General Troubleshooting - TECO L510S Series Instruction Manual

5.2 General troubleshooting

Status
Is the wiring for the output terminals
Motor runs in
correct?
wrong
Is the wiring for forward and reverse
direction
signals correct?
Is the wiring for the analog frequency
inputs correct?
The motor
Is the setting of operation mode
speed can not
correct?
be regulated.
Is the load too excessive?
Check the motor specifications
Motor running
(poles, voltage...) correct?
speed too
Is the gear ratio correct?
high or too
Is the setting of the highest output
low
frequency correct?
Is the load too excessive?
Does the load vary excessively?
Motor speed
varies
unusually
Is the input power unstable or is
there a phase loss ?
Is the power connected to the correct
L1, L2, and L3 terminals?
is the charging indicator lit ?
Is there voltage across the output
terminals T1, T2, and T3?
Is overload causing the motor to
stall?
Motor can not
Are there any abnormalities in the
run
inverter?
Is there a forward or reverse run
command ?
Has the analog frequency signal
been input?
Is the operation mode setting
correct?
Checking point
Wiring must match U, V, and W terminals of the
motor.
Check for correct wiring.
Check for correct wiring.
Check the Frequency Source set in parameters
00-05/00-06.
Reduce the load.
Confirm the motor specifications.
Confirm the gear ratio.
Confirm the highest output frequency
Reduce the load.
1.Minimize the variation of the load.
2.Consider increasing the capacities of the inverter
and the motor.
1.Consider adding an AC reactor at the power input
side if using single-phase power.
2.Check wiring if using three-phase power
1.Is the power applied?
2.Turn the power OFF and then ON again.
3.Make sure the power voltage is correct.
4.Make sure screws are secured firmly.
Turn the power OFF and then ON again.
Reduce the load so the motor will run.
See error descriptions to check wiring and correct if
necessary.
1.Is analog frequency input signal wiring correct?
2.Is voltage of frequency input correct?
Operate through the digital keypad
5-6
Remedy