Chapter 8 Troubleshooting & Maintenances
8-9
15) Accel/Decel cannot be made properly and green lamp in [REV], [FWD] key is blinking. (load
and frequency reference signal is oscillating.)
(1)
Check motor wiring.
(2)
FUN_40 ~ FUN_47 Accel/Decel time and DIS_00 motor load.
☞
Blinking Green lamp marks motor is accelerating or decelerating. If the rotating speed oscillates and
green lamp is blinking, it marks inverter output torque shortage due to mis-calculation of load. In
this case, increase the torque limit to enable inverter to accelerate/decelerate within its rating. If
load is set too high, it will shorten inverter life or damage to the unit.
8.5 Lists for maintenance and check
Machine Roomless Elevator of LS industrial systems for STARVERT
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iV5(MRL) is an
industrial product with s high technology semiconductor device that may have
malfunction due to product life expired and environmental factors such as temperature,
humidity, vibration. In order not to face those cases, daily check is surely needed.
Caution
l
Please, check the power input of inverter during maintenance.
l
Even after turning the power off, the power in mass storage electrolytic condenser could be
still charged. Therefore, please check whether the power is discharged or not first.
When measuring output voltage of inverter, correct voltage value is calculated only with
rectifier voltage meter. General or digital meters may cause wrong value display due to
high frequency PWM output voltage.
8.5.1 Daily check
1) Field environment to install is safe?
2) Cooling diagram is safe?
☞
Check the status of air filter.
3) Check whether there are vibrations or noises.
4) Check whether there is overheating or discoloration.