Toshiba TOSVERT VF-AS1 Instruction Manual page 282

(Continued)
Error
Description
code
Flush memory •The flash memory is defective.

fault
•The output current decreased to a
Low current
* low-current detection level during
operation
operation.
•The input voltage (in the main
circuit) is too low.
Undervoltage •Momentary power failure occurs
*
(main circuit) because undervoltage continues
longer than undervoltage detection
time .
•Overtorque reaches to a detection
* Overtorque
level during operation.
 •A current leaked from an output
Ground fault
cable or the motor to ground.

•The capacity of the motor
connected is 2 notches or more
smaller than the inverter capacity.
Tuning error
•The motor connected is not a

except Etn1~3
three-phase inductive motor.
•Tuning is performed while the
motor is running.
•Tuning required to boost torque as
specified with f410 cannot be
performed.
•The capacity of the motor
connected is 2 notches or more
smaller than the inverter capacity.
•The motor connected is not a
 tuning
three-phase inductive motor.

error
• Tuning is performed while no
motor is connected.
• he cables connecting the inverter
to the motor are too long; they are
more than 30m in length.
• Tuning is performed while the
motor is running.
• Tuning required to leak inductance
as specified with  cannot
be performed.
•Tuning required to boost torque as
specified with f410 cannot be
performed.
•The capacity of the motor
connected is 2 notches or more
 tuning smaller than the inverter capacity.

error •The motor connected is not a
three-phase inductive motor.
• Tuning is performed while no
motor is connected.
• he cables connecting the inverter
to the motor are too long; they are
more than 30m in length.
• Tuning is performed while the
motor is running.
Some items indicated on the motor
nameplate are not entered
correctly.
, ,
• Base frequency ul
 ~
• Base frequency voltage 1 vlv
setting error
• Motor rated capacity f405
• Motor rated current f406
• Motor rated speed f407
•Is circuit board (or main
Inverter type
circuit/drive circuit board)

error
replaced?
•Sink/source switch of input/output
terminal is set wrong (reversely
switched on/off).
Sink/source

switching error
*Presence or absence of parameter trip can be selected.
(Continued overleaf)
Possible causes
•Make a service call.
•Check the suitable detection level for the system
().
•Make a service call if the setting is correct.
•Check the input voltage.
•To cope with a momentary stop due to
undervoltage, enable  (Regenerative power
ride-through control),  (auto-restart control),
and  (Undervoltage detection time).
•Check system error.
•Check the cable and the motor for ground faults.
•Make sure that a motor is connected.
•Make sure that the motor is at standstill.
•Perform auto-tuning again and if the error persists,
perform tuning manually.
•Make sure that a motor is connected.
•Make sure that the motor is at standstill.
•Perform auto-tuning again and if the error persists,
perform tuning manually.
•Make sure that a motor is connected.
•Make sure that the motor is at standstill.
•Perform auto-tuning again and if the error persists,
perform tuning manually.
• Make sure that all items on the motor nameplate
are entered correctly.
•When board has been replaced, input  for .
•Check connections and set proper logic.
•After making sure that sequence is normal,
proceed in operation.
•If the same error does not occur when the power is
turned on again, the system has recovered normal
status. (Check control terminals and sink/source
switches including those of add-on options.)
M-3
E6581301
Remedies
13