Chapter 8 Troubleshooting & Maintenances
8-4
☞
Check whether BX (Emergency stop) signal is applied on keypad and input terminal defined as BX is
ON in DIS_03. If so, release BX and try operation.
(2)
RUN/STOP method is properly set ?
☞
Check FUN_01 RUN/STOP method setting matches the actual operation mode(RUN/STOP via keypad
or terminal). If FUN_01 is set to terminal but operation is not performed, change it to keypad mode
and try operation. If FUN_02 is set to Keypad but operation is not performed, change it to Terminal and
try operation. If either way cannot work, refer to (6).
2)
The motor does not rotate when Green lamp on [REV], [FWD] key is ON.
(1)
Is inverter U, V, W output correctly wired to motor U, V, W output?
☞
Refer to Main circuit terminal
(2)
②
Is the motor shaft jammed by brake or other mechanical devices?
☞
check the directly connected brake’s relay on time and brake open time.
(3)
On DIS_01 PreRamp Ref, is speed reference displayed not “0”?
☞
set the desired speed reference if it is set to “0”. If it is incorrectly set, refer to (7).
(4)
Is PAR_07 [motor rating] properly set?
☞
check the motor nameplate and setting matches.
(5)
Is PAR_17 [motor speed] properly set?
☞
check the motor nameplate and setting matches.
(6)
Is PAR_22 [motor rated current] properly set?
☞
check the motor nameplate and setting matches.
(7)
Is PAR_26 [motor flux current] properly set?
☞
If LG-OTIS vector motor is not used, consult LS representative or set the correct value in
accordance with application. However, it cannot set to exceed PAR_22 [motor rated current].
Normally it is 30~40 % of rated motor current.
(8)
Is PAR_21 [motor rated slip] properly set?
☞
check the motor nameplate and setting matches.
DIS
▶
Terminal In
03
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