9. Troubleshooting and Maintenance
9-7
LS representatives.
② When [STOP] key is blinking
☞ This marks trip condition or BX active status. Check any other trips occur in DIS_05. Reset the trip and try
run. Check BX signal is ON on the keypad and input terminal signal in DIS_01 ~ DIS_03. Reset BX and try
run.
③ When green lamp on [REV], [FWD] key is blinking
☞ It marks accel/decel is in operation. If inverter keeps operation in this condition, it means load capacity
calculation is incorrect and exceeds inverter rating. Refer to (16).
7) Operating speed does not change during run.
① Is FUN_02 speed setting proper?
☞ Speed setting methods in STARVERT-iV5 are Analog input, Keypad and Option. Select appropriate one
among them.
② Is DIS_01(PreRamp Ref) setting the correct value?
☞ Current speed ref. Values are displayed in DIS_01 ~ DIS_03. Check the displayed value matches the setting
value. If speed is not variable, check the encoder. (Refer to (13))
③ Speed setting method is “Keypad” and speed ref displayed DIS_01 ~ DIS_03 is not correct.
☞ Check terminal setting in DIO_01 ~ DIO_07 defined as Multi-step speed setting.
④ When speed setting method is Analog and DIS_01 ~ DIS_03 display is not desired value
☞ Check one of Ai1 ~ Ai3 is defined as “Speed Ref.”.
8) Motor keeps rotating at OV condition when speed setting is via Analog input.
① When AIO_11 Definition of Ai1 input is set to “Speed Ref”
☞ Adjust the Ai1_Bias at AIO_14. (Setting unit: %)
The displayed value is speed command. Set the desired value (ex: 0.0%) and press [ENTER] key.
② Follow the same steps to check Ai2 ~ Ai3.
9) Motor detects speed reference but motor rpm is showing decreasing while motor is overheated or
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