Appendix 3:Troubles and solutions
Appendix 193
7.4 Appendix 4:Troubles and solutions
Troubles
Check points
The motor does not
run
Main circuit
•Is the voltage between terminals R/L1-S/L2-T/L3 normal?
•Is the wiring between the inverter and the motor correct?
Load
•Is the load too heavy?
•Is the motor rotor locked?
Parameters
Setting
•Is the startup frequency (01-11(P.13)) set too high?
•Is the operation mode (00-16(P.79)) correct?
•Is the upper limit frequency (01-00(P.1)) set to zero?
•Is forward reverse rotation prevention (00-15(P.78)) limited?
•Is the signal input and percentage setting(02-25(P.198)~02-28(P.197))
correct?
•Is the frequency jump(01-16(P.91)~01-21(P.96))correct?
Control
circuit
•Is MRS function “on”? (relevant parameters 03-00(P.83), 03-01(P.84),
03-03(P.80) , 03-04(P.81))
•Is RES function “on”? (relevant parameters 03-00(P.83) 、 03-01(P.84) 、
03-03(P.80)、03-04(P.81))
•Is the external thermal relay tripping?
•Is there an alarm that has not been reset?
• Are STF and STR functions correct? (relevant parameters 03-00(P.83),
03-01(P.84), 03-03(P.80), 03-04(P.81))
•Does the wiring of the control circuit fall off or have poor contact?
Opposite motor
rotation direction
•Is the phase sequence of the wiring of the motor terminal (U/T1)/(V/T2)/(W/T3) correct?
•Is the wiring of the start terminals STF and STR correct?
The motor cannot
accelerate
•Is the load too heavy?
•Is stall prevention level (06-01(P.22)) correct?
•Is torque compensation (01-10(P.0)) too high?
•Is it limited by the upper limit frequency (01-00(P.1))?
Unsmooth
acceleration and
deceleration
•Is the acceleration and deceleration time (01-06(P.7) and 01-07(P.8)) set correctly?
•Is the acceleration/deceleration curve selection (01-05(P.29)) correct?
•Does the voltage/current signal fluctuate due to noise?
Excessive motor
current
•Is the load too heavy?
•Does the inverter capacity match the motor capacity?
•Is torque compensation (01-10(P.0)) too high?
Speed fluctuation
in operation
•Does the voltage/current signal fluctuate due to noise?
•Has the motor load changed?
•Is the main circuit wiring too long?
Summary of Contents for SL3 Series
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Page 200: ...Appendix 4 Optional equipment Appendix 196 ...
Page 210: ...Appendix 5 European Specification Compatibility Description Appendix 206 ...