Emotron VSA Series User Manual

60 Troubleshooting and maintenance Emotron AB 01-3991-11r2
2. Errors which can be recovered both manually and
automatically
Ta bl e 2 5
Display Error Cause Corrective Action
Over-current at
start
1.Motor winding and frame short
circuit
2.Motor and earth 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 too short
2. The capacity of the motor is
higher than the capacity of the
VSD
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 the VSD with the
same or greater capacity as
that of the motor.
3. Check the motor
4. Check the wiring
5. Replace the IGBT module
Over-current dur-
ing run
1. Transient load change
2. Transient power change
Increase VSD capacity
Over voltage dur-
ing operation/
deceleration
1. Deceleration time setting is
too short or excessive load iner-
tia
2. Power voltage varies widely
1. Set a longer deceleration
time
2. Add a braking resistor or
braking unit
3. Add a reactor at the input
line side
4. Increase VSD capacity
High heat sink
temperature dur-
ing operation
1. Heavy load
2. Ambient temperature too high
or bad ventilation
1. Check if there are any prob-
lems with the load
2. Increase VSD capacity
3. Improve ventilation condi-
tions
4. Inspect the setting value of
parameter [217]
OCS
OCD
OCA
OCC
OVC
OHC

Emotron VSA Series Specifications

General

Brand	Emotron
Model	VSA Series
Category	DC Drives
Language	English