E6581158
M-2
13
(Continued)
Error code
Failure code
Problem
Possible causes
Remedies
QR
000A
Overvoltage during
acceleration
•
The imput voltage fluctuates abnormally.
(1) The power supply has a capacity of
200kVA or more.
(2) A power factor improvement capacitor is
opened or closed.
(3) 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
H
(auto-restart) and
H
(ride-through control).
QR
000B
Overvoltage during
deceleration
•
The deceleration time
FGE
is too short.
(Regenerative energy is too large.)
•
H
(dynamic braking resistor) is off.
•
H
(overvoltage limit operation) is
off.
•
The input voltage fluctuates abnormally.
(1) The power supply has a capacity of
200kVA 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.
•
Increase the deceleration time
FGE
.
•
Install a dynamic braking resistor.
•
Enable
H
(dynamic braking resis-
tor).
•
Enable
H
(overvoltage limit opera-
tion).
•
Insert a suitable input reactor.
QR
000C
Overvoltage during
constant-speed op-
eration
•
The input voltage fluctuates abnormally.
(1) The power supply has a capacity of
200kVA or more.
(2) A power factor improvement capacitor is
opened or closed.
(3) A system using a thyrister is connected
to the same power distribution line.
•
The motor is in a regenerative state be-
cause the load causes the motor to run at
a frequency higher than the inverter out-
put frequency.
•
Insert a suitable input reactor.
•
Install a dynamic braking resistor.
QN
000D
Inverter overload
•
The acceleration time ACC is too short.
•
The DC braking amout 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
H
(auto-restart) and
H
(ride-through control).
•
Use an inverter with a larger rating.
QN
000E
Motor overload
•
The V/F setting is improper.
•
The motor is locked up.
•
Low-speed operation is performed con-
tinuously.
•
An excessive load is applied to the motor
during operation.
•
Check the V/F parameter setting.
•
Check the load (operated machine).
•
Adjust
QNO
to the overload that the
motor can withstand during operation in a
low speed range.
QNT
000F
Dynamic braking re-
sistor
overload trip
•
The deceleration time is too short.
•
Dynamic braking is too large.
•
Increase the deceleration time
FGE
.
•
Increase the capacity of dynamic braking
resistor (wattage) and adjust PBR capac-
ity parameter
H
.
*
QV
0020
Over-torque trip
•
Over-torque reaches to a detection level
during operation.
•
Enable
H
(over-torque trip selec-
tion).
•
Check system error.
QJ
0010
Overheat
•
The cooling fan does not rotate.
•
The ambient temperature is too high.
•
The vent is blocked up.
•
A heat generating device is installed close
to the inverter.
•
The thermistor in the unit is broken.
•
Restart the operation by resetting the
inverter after it has cooled down enough.
•
The fan requires replacement if it does
not rotate during operation.
•
Secure sufficient space around the
inverter.
•
Do not place any heat generating device
near the inverter.
•
Make a service call.
*
You can select a trip ON/OFF by parameters.
(Continued overleaf)
