Chapter 8 Troubleshooting & Maintenances
8-6
(2)
Is one of the terminal defined as FWD/REV Run Disable ON?
☞
Check one of I/O_01 ~ I/O_07 terminals is defined as “Prohibit FWD” or “Prohibit REV”. If so,
check input terminal status in DIS_01 ~ DIS_03. If rotating direction is not changed, check the
terminal is ON.
6)
Keypad or terminal malfunctions.
(1)
When [REV], [FWD], [STOP] key on the keypad is lit Red or Green
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Refer to (1) if RUN/STOP is not activated by Keypad or Terminal. If setting change is not available,
PAR_04 may set to prohibit parameter write. To release this setting, enter 12 in PAR_04. If problem
persists, contact 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 I/O_01 ~ I/O_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 I/O_11 Definition of Ai1 input is set to “Speed Ref”
☞
Adjust the Ai1_Bias at I/O_14. (Setting unit: %)