Toshiba TOSVERT VF-AS3, Instruction Manual

Page: 596 / 622

E6582062 
13. Trip information and measures
13-6
4
4
8
9
13
OC3 0003 Overcurrent
(during
constant
speed
running) 1) The load changed rapidly.
2) Error occurred in the machinery
(something got stuck, etc.).
3) Tried to run a low inductance motor like
a high-speed motor.
4) When <Pt> = "11", polarity of PG is
opposite.
5) When <F614: Pulse width of short
circuit detection at start> = "0", and
<F613>=2, or 3 inverter output short
circuit.
1) Suppress load fluctuation.
2) Check whether a problem exists in the
machinery.
3) Change the inverter to large capacity.
OCA1 0005 Overcurrent
(U-phase
arm) Fault on IGBT in U-phase. Fault in internal inverter.
Contact your Toshiba distributor.
OCA2 0006 Overcurrent
(V-phase arm) Fault on IGBT in V-phase. Fault in internal inverter.
Contact your Toshiba distributor.
OCA3 0007 Overcurrent
(W-phase
arm) Fault on IGBT in W-phase. Fault in internal inverter.
Contact your Toshiba distributor.
OCL 0004 Overcurrent
(load side at
startup) 1) Short circuit occurred on the output
side.
2) The motor and output side wiring have
defective insulation.
3) Impedance on the motor is low.
1) Check the wiring on the output side.
2) Check the insulation on the output side.
3) Set <F613: Short circuit detection at
start> to "2" or "3".
OCr 0024 Overcurrent
(Braking
resistor) 1) When "Enabled" is set in <F304:
Dynamic braking, OLr trip>:
• The braking resistor is not connected.
• The braking resistor connection is
disconnected.
• A braking resistor with a resistance
value under the minimum allowable
resistance value is connected.
2) Short circuit occurred between [PB] and
[PC/-].
3) IGBT fault on the dynamic braking drive
circuit control.
1) Check if an adequate braking resistor is
connected. When a braking resistor is
not necessary, set "Disabled" in
<F304>.
2) Check for problems on impedance of
the braking resistor, wiring, etc.
3) Fault in internal inverter.
Contact your Toshiba distributor.
* This trip can not be reset. For trip clear,
turn off the power and then turn it on
again.
OH 0010 Overheat 1) The cooling fan is not working.
2) Ambient temperature is high.
3) The vent of the cooling fan is blocked.
4) Other heating units are nearby. 1) Replace if the cooling fan is not working
during run.
2) Lower the ambient temperature. Reset
after the inverter cools down.
3) Make sure the vent of the cooling fan is
not blocked.
4) Place other heating units away from the
inverter.
OH2 002E External
thermal trip * A signal of external thermal trip is input. Check that the motor is not overloaded.
OL1 000D Overload
(Inverter) 1) Sudden acceleration occurs and the
acceleration time is short.
2) <Pt: V/f Pattern> does not match the
machinery.
3) Momentary power failure occurred, and
tried to start the rotating motor.
4) The DC braking amount is large.
5) The load is large for the inverter
capacity.
1) Increase the acceleration time. <ACC:
Acceleration time 1>, etc.
2) Set <Pt: V/f Pattern> according to the
machinery.
3) Set <F301: Auto-restart>. Depending
on the characteristic of machinery,
<F302: Regenerative power ride-
through> = "1" is also effective.
4) Set <F251: DC braking current> small
and <F252: DC braking time> short.
5) Change the inverter to large capacity.
*Enable/Disable can be selected for trip with a parameter.
Trip
display
Failure
code
Trip name Detection factor Measures