E6582233
L-3
12
(Continued)
Error code
Failure
code
Problem Possible
causes
Remedies
OL2 000E
Motor
overload
The V/F setting is improper.
Check the V/F parameter setting.
The motor is locked up.
Check the load (operated machine).
Low-speed operation is performed
continuously.
An excessive load is applied to the motor
during operation.
Adjust
to the overload that the
motor can withstand during operation in a
low speed range.
OL3 003E
Main
module
overload
The carrier frequency is high and load
current has increased at low speeds
(mainly at 15Hz or less).
Raise the operation frequency.
Reduce the load.
Reduce the carrier frequency.
When an operating motor is started up at
0Hz, use the auto-restart function.
Set carrier frequency control mode
selection
f316
to
1
. (carrier frequency
with automatic reduction).
OP1 000A
Overvoltage
during
acceleration
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.
Insert a suitable input reactor.
A restart signal is input to the rotating
motor after a momentary stop, etc.
Use
(auto-restart) and
(ride-through control).
OP2 000B
Overvoltage
during
deceleration
The deceleration time
is too short.
(Regenerative energy is too large.)
Increase the deceleration time
.
Overvoltage
limit
operation
is
set to
,
,
.
Decrease the overvoltage stall protection
level
.
is set to
. (Disabled).
Set
to
,
,
.
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.
Insert a suitable input reactor.
OP3 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.
Insert a suitable input reactor.
The motor is in a regenerative state
because the load causes the motor to
run at a frequency higher than the
inverter output frequency.
Install an optional brake resister.
(4004P and 4007P models cannot be used
brake resister.)
*
OT 0020
Over-torque
trip
Over-torque reaches to a detection level
during operation.
Enable
(over-torque trip
selection).
Check system error.
*
UC 001D
Low-current
operation
Trip
The output current decreased to a low-
current detection level during operation.
Enable
(low-current detection).
Check the suitable detection level for the
system (
,
,
).
Contact your Toshiba distributor if the
setting is correct.
*
UP1 001E
Undervoltage
trip
(main circuit)
The input voltage (in the main circuit) is
too low.
Check the input voltage.
Enable
(undervoltage trip
selection).
To take measures to momentary power
failure, set
=
or
, Regenerative
power ride-through control
f302
and
Auto-restart control selection
f301
.
* You can select a trip ON/OFF by parameters.
