E6581531
M-2
13
(Continued)
Error
code
Description Possible
causes
Remedies
QN
Inverter
overload
•Rapid acceleration is operated.
•The DC braking amount is too
large.
•The V/f setting is improper.
•A restart signal is input to the
rotating motor after a momentary
stop, etc.
•The load is too large.
•Increase the acceleration time
CEE
.
•Reduce the DC braking amount
H
and the
DC braking time
H
.
•Check the V/f parameter setting.
•Use
WX
(Auto-restart) and
WXE
(Regenerative
power ride-though control).
•Use an inverter with a larger rating.
QN
Motor overload
•The V/f parameter is improperly
set.
•The motor is locked up.
•Low-speed operation is performed
continuously.
•An excessive load is applied to the
motor during operation.
•Check the V/f parameter setting.
•Check the load (operated machine).
•Check the
QNO
setting and adjust
H
according to the sustainable overload in the motor
low-speed range.
•Reduce the DC braking amount
H
and the
DC braking time
H
.
QNT
Dynamic
braking resistor
overload
•Rapid deceleration is operated.
•Dynamic braking is too large.
•Increase the deceleration time
FGE
.
•Increase the capacity of dynamic braking resistor
(wattage) and adjust PBR capacity parameter
RDER
.
QR
Overvoltage
during
acceleration
•The input voltage fluctuates abnormally.
(1)A power factor improvement
capacitor is opened and closed.
(2)A system using a thyrister is
connected to the same power
distribution line.
•A restart signal is input to the
rotating motor after a momentary
stop, etc.
•Insert a suitable input reactor.
•Use
WX
(Auto-restart) and
WXE
(Regenerative
power ride-though control).
QR
Overvoltage
during
deceleration
•The deceleration time
FGE
is too
short (regenerative energy is too
large).
•The dynamic braking resistor has
a considerably large resistance.
•
RD
(Dynamic braking resistor) is OFF.
Overvoltage limit operation
H
is OFF.
•The input voltage fluctuates abnormally.
(1)A power factor improvement
capacitor is opened and closed.
(2)A system using a thyrister is
connected to the same power
distribution line.
•Increase the deceleration time
FGE
.
•Install a dynamic braking resistor.
•Decrease dynamic braking resistance. (Also reset
the
RDT
.)
•Set dynamic braking mode parameter
RD
properly.
•Set overvoltage limit operation
H
properly.
•Insert a suitable input reactor.
QR
Overvoltage
during fixed
speed operation
•The input voltage fluctuates
abnormally.
(1)A power factor improvement
capacitor is opened and closed.
(2)A system using a thyrister is
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.
•Insert a suitable input reactor.
•Install a dynamic braking resistor.
*
QV
Overtorque
•Overtorque reaches to a detection
level during operation.
•Stall prevention operation was
performed continuously for a
length of time longer than that set
with
H
.
•Check system error.
•Check whether the motor is overloaded or the
brake is engaged.
*
WE
Low current
operation
•The output current decreased to a
low-current detection level during
operation.
•Check the suitable detection level for the system
(
H
).
•Make a service call if the setting is correct.
*
WR
Undervoltage
(main circuit)
•The input voltage (in the main
circuit) is too low.
•Momentary power failure occurs
because undervoltage continues
longer than undervoltage detection
time
H
.
•Check the input voltage.
•To cope with a momentary stop due to
undervoltage, enable
WXE
(Regenerative power
ride-through control),
WX
(auto-restart control),
and
H
(Undervoltage detection time).
*Presence or absence of parameter trip can be selected.
(Continued overleaf)
Содержание TOSVERT VF-PS1
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Страница 20: ...E6581531 A 8 1 VFPS1 6250KPC 6400KPC VFPS1 6500KPC 6630KPC ...
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