LS Starvert-iG5A - Troubleshooting Other Faults; Inverter;Motor Operational Issues; Motor Vibration and Overheating; Maintenance: Consumable Parts

Type Cause Remedy
The
inverter is
not
responding
when power
is supplied
 There is an input power
fault.
 The inverter does not have
short circuit connectors at
P and B1 (11- 22 kW
models).
 Loader fault and a loader
and inverter contact fault.
 Switched-mode power
supply (SMPS) fault.
 Ensure the input voltage is
correct. Check the
circuit breaker and
magnetic contactor (before
the input terminal).
 Install short circuit
connectors.
 Replace the loader.
 Contact the supplier.
The motor
does not
rotate
 Current is not supplied at
the inverter output(U, V,
W).
 Motor cable fault or
peripheral device
connection fault.
 Check the operation and
frequency commands.
 If the inverter is not
operating, even if the Run
Lamp is on and the
frequency command is
correct, contact the
supplier.
 Check the wiring and
peripheral devices.
The motor
does not
accelerate
or
decelerate
 Operation and frequency
command values are
incorrect.
 The load is too high and
an over-current control
condition exists.
 The maximum frequency
or frequency limit is set.
 Check the operation and
frequency commands.
 Reduce the load or
increase the inverter
rating.
 Adjust the parameter.
Type Cause Remedy
The motor
vibrates
severely, does
not rotate
normally, and
stalls.
 There are large load
fluctuations.
 The input voltage is
not stable.
 The torque boost
value is too high.
 Adjust the load to
the rated
value.
 Ensure the input voltage is
correct
 Adjust the torque boost
value.
The motor
is
overheating.
 The motor has been
operating
continuously at low
speed.

The base frequency is
set incorrectly.
 Adjust the operation speed
setting or install an extra
cooling system for the
motor.
 Ensure the motor rating is
correct and set the base
frequency correctly.
The inverter
is
overheating
 The charging resistor is
damaged.
 Check the input and output
cables, braking resistor,
and connections (ground
etc.).
Troubleshooting other faults Troubleshooting other faults
Name Replacement indications
Recommended
replacement cycle
Cooling fan
Check for fan noise and cooling
efficiency.
3 years
DC link
capacitor
The top of the capacitor swells. 4 years
Relay
Check the relay operation sound
when power is supplied to the
inverter. LV trips occur when the
motor runs.
After inspection
 Consumable parts
Maintenance
- 11 - - 12 -