Check first when you have a trouble
Protective functions
6 - 44
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
Torque command is negative during torque
control under vector control.
Check the torque command value.
Parameter
setting
Summary of Contents for FR-A820-00046 (0.4K)
Page 2: ......
Page 4: ......
Page 144: ...System configuration for Ethernet communication FR A800 E Installation and wiring 2 114 ...
Page 202: ...Basic operation procedure JOG operation Basic operation 4 32 ...
Page 1090: ...Check first when you have a trouble Protective functions 6 50 ...
Page 1189: ...Appendix EC Declarations of Conformity FR A800 A 49 ...
Page 1190: ...EC Declarations of Conformity Appendix A 50 ...
Page 1191: ...Appendix EC Declarations of Conformity FR A800 A 51 ...
Page 1192: ...EC Declarations of Conformity Appendix A 52 ...
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Page 1194: ...EC Declarations of Conformity Appendix A 54 ...
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Page 1196: ...EC Declarations of Conformity Appendix A 56 ...
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Page 1198: ...EC Declarations of Conformity Appendix A 58 ...
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Page 1202: ...EC Declarations of Conformity Appendix A 62 ...
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Page 1208: ...EC Declarations of Conformity Appendix A 68 ...
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Page 1210: ...EC Declarations of Conformity Appendix A 70 ...
Page 1211: ...Appendix EC Declarations of Conformity FR A800 A 71 ...
Page 1212: ...EC Declarations of Conformity Appendix A 72 A 7 2 FR A846 series ...
Page 1213: ...Appendix EC Declarations of Conformity FR A800 A 73 ...
Page 1214: ...EC Declarations of Conformity Appendix A 74 ...
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