Toshiba TOSVERT VF-nC3E User Manual

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.

Toshiba TOSVERT VF-nC3E Specifications

General

Brand	Toshiba
Model	TOSVERT VF-nC3E
Category	Inverter
Language	English