General Troubleshooting - TECO N3 Series Operating Manual

22.1 General Troubleshooting

Fault
Status
there is power applied to terminals L1(L), L2,
and L3(N) (L1(L) and L3(N) for single phase
units)
the Charge indicator is lit.
there is voltage on output terminals T1, T2, and
T3 to the motor.
there is not an overload causing the motor to stall
Motor will
there are not any inverter wiring problems.
not run
there is a forward or reverse run command.
there is a Run command.
the operational mode is correct.
the wiring for output terminals T1, T2, and T3 is
correct.
Motor runs
in wrong
direction
the wiring for the forward and reverse signals is
correct.
t he signal wiring for the analog input frequency is
correct.
Motor
speed can
the setting of operation mode is correct..
not be
regulated
the load on the motor is not too excessive.
the specifications for the motor (poles,
voltage etc...) are correct.
Motor
speed too
the gear ratio is correct.
high or too
low
the setting of the maximum output frequency
is correct.
the load is too excessive.
Motor
the load does not vary excessively.
speed
varies
the input power is not erratic or there is a phase
erratically
loss occurring.
Check That:
N3 Drive Operations Manual
Remedy
· Apply power
· Turn power OFF and then ON again.
· Make sure the input voltage is correct.
·
Make sure the power input terminal screws
are firmly secure.
Turn the power OFF and then ON again.
Reduce the load so the motor will run.
Correct wiring or any input connection
p problems.
· Make sure that the analog frequency input
signal wiring is correct.
· Make sure that the signal input voltage
value is correct.
Operate the inverter through the digital
keypad.
The wiring must match the U, V, and W
terminals of the motor.
Correct wiring if necessary.
Correct wiring if necessary.
Check the operation mode on the keypad.
Reduce the load.
Confirm the motor specifications.
Confirm the gear ratio.
Confirm the maximum output frequency.
Reduce the load.
· Minimize the variation of the load.
· Increase capacities of the inverter and the
motor.
· Add an AC reactor at the power input side if
using single-phase power.
·
Check wiring if using three-pha
Troubleshooting; General
se power.
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