Toshiba TOSVERT VF-AS1 Instruction Manual page 305

(Continued)
Error
code






13
*
*
*
*Presence or absence of parameter trip can be selected.
(Continued overleaf)
Description Possible causes
•Rapid acceleration is operated.
•The DC braking amount is too
large.
Inverter •The V/f setting is improper.
overload •A restart signal is input to the
rotating motor after a momentary
stop, etc.
•The load is too large.
•The V/f parameter is improperly set.
•The motor is locked up.
•Low-speed operation is performed
Motor overload continuously.
•An excessive load is applied to the
motor during operation.
•Rapid deceleration is operated.
Dynamic
•Dynamic braking is too large.
braking resistor
overload
•The input voltage fluctuates abnormally.
(1)The power supply has a capacity
of 500kVA or more.
(2)A power factor improvement
Overvoltage capacitor is opened and closed.
during (3)A system using a thyrister is
acceleration connected to the same power
distribution line.
•A restart signal is input to the
rotating motor after a momentary
stop, etc.
•The deceleration time  is too
short (regenerative energy is too
large).
•The dynamic braking resistor has a
considerably large resistance.
• (Dynamic braking resistor) is OFF.
Overvoltage limit operation 
Overvoltage
is OFF.
during
•The input voltage fluctuates abnormally.
deceleration
(1)The power supply has a capacity
of 500kVA or more.
(2)A power factor improvement
capacitor is opened and closed.
(3)A system using a thyrister is
connected to the same power
distribution line.
•The input voltage fluctuates
abnormally.
(1)The power supply has a capacity
of 500kVA or more.
(2)A power factor improvement
Overvoltage capacitor is opened and closed.
during fixed (3)A system using a thyrister is
speed operation connected to the same power
distribution line.
•The motor is in a regenerative
state because the load causes the
motor to run at a frequency higher
than the inverter output frequency.
•Overtorque reaches to a detection
level during operation.
•Stall prevention operation was
Overtorque
performed continuously for a
length of time longer than that set
with .
•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 .
•Increase the acceleration time .
•Reduce the DC braking amount  and the
DC braking time .
•Check the V/f parameter setting.
•Use  (Auto-restart) and  (Regenerative
power ride-though control).
•Use an inverter with a larger rating.
•Check the V/f parameter setting.
•Check the load (operated machine).
•Check the  setting and adjust 
according to the sustainable overload in the motor
low-speed range.
•Reduce the DC braking amount  and the
DC braking time .
•Increase the deceleration time .
•Increase the capacity of dynamic braking resistor
(wattage) and adjust PBR capacity parameter
.
•Insert a suitable input reactor.
•Use  (Auto-restart) and  (Regenerative
power ride-though control).
•Increase the deceleration time .
•Install a dynamic braking resistor.
•Decrease dynamic braking resistance. (Also reset
the .)
•Set dynamic braking mode parameter 
properly.
•Set overvoltage limit operation  properly.
•Insert a suitable input reactor.
•Insert a suitable input reactor.
•Install a dynamic braking resistor.
•Check system error.
•Check whether the motor is overloaded or the
brake is engaged.
•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).
M-2
E6581445
Remedies