9. Troubleshooting and Maintenance
9-5
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.
⑨ Is PAR_27 [Motor secondary time constant (Tr) properly set?
☞ if motor is not LG-OTIS vector motor, perform the Auto-tuning or set this correctly. If it is incorrectly set,
inverter performance will be dramatically deteriorated.
⑩ Is PAR_19 [number of motor poles] properly set?
☞ check the motor nameplate and setting matches.
⑪ CON_28 [Torque limit setting] is set to “ Kpd Kpd Kpd “. Is CON_29 ~ CON_31 setting correct?
☞ CON_29 ~ CON_31 marks upper limit in inverter output torque. For the application lower torque limit is
required, when torque shortage occurs, increase this value a little. STARVERT
-
iV5 ‘s overload capacity is
150%/1 min. when using torque limit over 150%, time and the number of use should be limited.
⑫ When CON_28[torque limit setting] Analog or Option, the corresponding input value is properly set?
☞ CON_28 is set to Analog, one of Ai1/Ai2/Ai3 should be defined as “Torque limit”. If set to Option, refer
to Option manual for proper setting.
3) Motor speed is not increasing while it is running.
① Is PAR_10 [number of Encoder pulse] set properly?
☞ factory default is 1024. If it is not OTIS vector motor, contact with Encoder maker.
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