Check first when you have a trouble
Protective functions
6 - 40
6.6.3
Inverter generates abnormal noise
6.6.4
Motor generates heat abnormally
6.6.5
Motor rotates in the opposite direction
Check
points
Possible cause
Countermeasure
Refer to
page
Fan
Fan cover was not correctly installed when a
cooling fan was replaced.
Install a fan cover correctly.
Check
points
Possible cause
Countermeasure
Refer to
page
Motor
Motor fan is not working
(Dust is accumulated.)
Clean the motor fan.
Improve the environment.
⎯
Phase to phase insulation of the motor is
insufficient.
Check the insulation of the motor.
⎯
Main
Circuit
The inverter output voltage (U, V, W) are
unbalanced.
Check the output voltage of the inverter.
Check the insulation of the motor.
Parameter
Setting
Pr. 71 "Applied motor" setting is incorrect.
Check the Pr. 71 "Applied motor" setting.
⎯
Motor current is large.
Refer to "6.6.11 Motor current is too large".
Check
points
Possible cause
Countermeasure
Refer to
page
Main
Circuit
Phase sequence of output terminals U, V
and W is incorrect.
Connect phase sequence of the output cables
(terminal U, V, W) to the motor correctly.
Input
signal
The start signals (forward rotation, reverse
rotation) are connected improperly.
Check the wiring.
(STF: forward rotation, STR: reverse rotation)
The polarity of the frequency command is
negative during the polarity reversible
operation set by Pr. 73 "Analog input
selection".
Check the polarity of the frequency command.
Input
signal
Parameter
Setting
Torque command is negative during torque
control under vector control.
Check the torque command value.
Содержание FR-A800
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Страница 22: ...Contents XVIII ...
Страница 30: ...Related manuals Introduction 1 8 ...
Страница 122: ...Connection of stand alone option units Installation and wiring 2 92 ...
Страница 180: ...Basic operation procedure JOG operation Basic operation 4 32 ...
Страница 934: ...Check first when you have a trouble Protective functions 6 46 ...
Страница 954: ...Measurement of main circuit voltages currents and powers Precautions for maintenance and inspection 7 20 ...
Страница 1030: ...EC Declarations of Conformity Appendix A 46 A 5 EC Declarations of Conformity A 5 1 Low Voltage Directive ...
Страница 1031: ...Appendix EC Declarations of Conformity FR A800 A 47 ...
Страница 1032: ...EC Declarations of Conformity Appendix A 48 ...
Страница 1033: ...Appendix EC Declarations of Conformity FR A800 A 49 ...
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Страница 1035: ...Appendix EC Declarations of Conformity FR A800 A 51 A 5 2 EMC Directive ...
Страница 1036: ...EC Declarations of Conformity Appendix A 52 ...
Страница 1037: ...Appendix EC Declarations of Conformity FR A800 A 53 ...
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