
Chapter 5 Trouble shooting and maintenance
5-6
5.2 General functional troubleshooting
Status Checking
point
Remedy
Is power applied to L1, L2, and L3(N)
terminals (is the charging indicator lit)?
Is the power applied?
•
Turn the power OFF and then ON
•
again.
Make sure the power voltage is
•
correct.
Make sure screws are secured
•
firmly.
Are there voltage outputs in T1, T2, and
T3 terminals?
Turn the power OFF and then ON
•
again.
Is the motor mechanically overloaded?
Reduce the load to let the motor
•
running.
Are there any abnormalities in the
inverter?
Is forward or reverse running command
issued?
See error descriptions to check wiring
and correct if necessary.
Is there an analog input signal?
•
Is analog frequency input signal
wiring correct?
Is voltage of frequency input
•
correct?
Motor can not
run
Is operation mode setting correct?
•
Operate operations through the
digital panel
Are wiring for output terminals T1, T2,
and T3 correct?
Wiring must match U, V, and W
•
terminals of the motor.
Motor runs
inversely
Are wiring for forward and reverse
signals correct?
Check wiring are correct if
•
necessary.
Are wiring for output terminals T1, T2,
and T3 correct?
Check wiring are correct if
•
necessary.
Is the setting of frequency command
source correct?
Check the operation mode setting
•
of the operator.
Motor runs
inversely
The motor
speed can not
vary
Is the load too heavy?
Reduce the load.
•
Is the setting of operation mode correct?
Confirm the motor’s specifications.
•
Is the load too heavy?
Confirm the gear ratio.
•
Motor running
speed too high
or too low
Are specifications of the motor (poles,
voltage…) correct?
Confirm the highest output
•
frequency.
Is the gear ratio correct?
Reduce the load.
•
Is the setting of the highest output
frequency correct?
Minimize the variation of the load.
•
Increase capacities of the inverter
•
and the motor.
Motor speed
varies
unusually
Is the load too heavy?
Add an AC reactor at the power
•
input side if using single-phase
power.
Check wiring if using three
•
-phase
power.
Содержание 7300EV
Страница 14: ...Chapter 3 Environment description and installation 3 4 z EV 1P2 1P5 101 2P2 2P5 201 N4S install TM1 TM2 ...
Страница 15: ...Chapter 3 Environment description and installation 3 5 z EV 1P2 1P5 101 2P2 2P5 201 N4 install TM1 TM2 ...
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Страница 87: ...Chapter 6 Peripherals 6 5 z JNFS20858 7 07 FOR EV 401 403 H3 ...