TECO N310 Series - Faults which can be recovered manually and automatically

Chapter 5 Troubleshooting and maintenance
5-2
2. Faults which can be recovered manually and automatically
Display Fault Cause Corrective Action
Over current at
start
1. Short circuit between the
motor coil and the case
2. Short circuit between motor
coil and ground
3. the IGBT module damaged
1. Inspect the motor
2. Inspect the wiring
3. Replace the transistor module
Over-current at
deceleration
The preset deceleration time is
too short.
Set a longer deceleration time
Over-current at
acceleration
1. Acceleration time too short
2. The capacity of the
motor exceeds the capacity
of the inverter
3. Short circuit between
the motor coil and the
case
4. Short circuit between
motor wiring and ground
5. the IGBT module damaged
1. Set a longer acceleration time
2. Replace inverter with one that
has the same rating as that o
f
the motor
3. Check the motor
4. Check the wiring
5. Replace the IGBT module
Over-current at
fixed speed
1. Transient load change
2. Transient power change
1.Increase the capacity of the
inverter
2.Repeat parameter auto tuning
(06-05= 1)
3.Reduce stator resistance
(06-06) if the above actions are
ineffective
Excessive
Voltage during
operation/
deceleration
1. Deceleration time setting too
short or excessive load
inertia
2. Power voltage varies widel
y
(fluctuates)
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
Unacceptable
CPU interrupt
External noise interference
Return unit if this happens
regularly
OC-S
OC-A
OC-C
OV-C
OC-D
Err4