Toshiba TOSVERT VF-FS1 Series, Instruction Manual

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E6581381
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.
• There is possibility of output phase
failure.
•
Insert a suitable input reactor.
•
Use H (auto-restart) and H
(coast stop).
• Check the main circuit output line, motor,
etc. for phase failure.
QR 000B Overvoltage during
deceleration •
The deceleration time FGE is too short.
(Regenerative energy is too large.)
•
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.
• There is possibility of output phase
failure.
•
Increase the deceleration time FGE .
•
Enable H (overvoltage limit
operation).
• Insert a suitable input reactor.
• Check the main circuit output line, motor,
etc. for phase failure.
QR 000C Overvoltage during
constant-speed
operation •
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
because the load causes the motor to run
at a frequency higher than the inverter
output frequency.
•
There is possibility of output phase
failure.
•
Insert a suitable input reactor.
• Check the main circuit output line, motor,
etc. for phase failure.
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
(coast stop).
•
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
continuously.
•
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.
*
QV
0020 Over-torque trip
•
Over-torque reaches to a detection level
during operation.
•
Enable
H
(over-torque trip
selection).
•
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)