TECO 7300EV, Быстрый старт, Страница: 70 / 93

Chapter 5 Trouble shooting and maintenance
5-2
2. Errors which can be recovered manually and automatically
Display Error Cause Remedy
Over current at
start
1.The motor winding and
frame short circuit
2.Motor and ground short circuit
3.Power module is damaged 1.Check the motor
2.Check the wiring
3.Replace the power module
Over-current at
deceleration
The preset deceleration time is
too short
Set a longer deceleration time
Over-current at
acceleration
1. Acceleration time is too short
2. The capacity of the motor
higher than the capacity of the
inverter
3.Short circuit between the motor
winding and frame.
4.Short circuit between motor
wiring and earth
5. IGBT module is damaged
1.Set a longer acceleration time
2.Replace a inverter with the
same capacity as that of the
motor
3.Check the motor
4.Check the wiring
5. Replace the IGBT module
Over-current
during running
1. Transient load change
2. Transient power change
1. Increase inverter capacity
Over voltage
during
operation/
deceleration
1. Deceleration time setting is too
short or large load inertia
2. Power voltage varies widely
1.Set a longer deceleration time
2.Add a brake resistor or brake
module
3.Add a reactor at the power
input side
4.Increase inverter capacity
High heat sink
temperature
during
operation
1. Heavy load
2. Ambient temperature too high
or bad ventilation
1.Check if there are any
problems with the load
2.Increase inverter capacity
3.Improve ventilation
conditions
4.Inspect the setting value of
parameter C13
OCS
OCD
OCA
OCC
OVC
OHC