Restoring The Inverter From A Trip - Toshiba VFNC3-2001P Instruction Manual

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[Prealarm display]
Overcurrent alarm

Overvoltage alarm

Overload alarm

Overheat alarm

If two or more problems arise simultaneously, one of the following alarms appears and blinks.
, , 
The blinking alarms , , , h are displayed in this order from left to right.

13.2 Restoring the inverter from a trip

Do not reset the inverter when tripped because of a failure or error before eliminating the cause. Resetting the
tripped inverter before eliminating the problem causes it to trip again.
The inverter can be restored from a trip by any of the following operations:
(1) By turning off the power (Keep the inverter off until the LED turns off.)
Note) See inverter trip hold selection  for details.
(2) By means of an external signal (Short circuit across RES and CC on control terminal block → Open): The
reset function must be assigned to the input terminal block.
(3) By panel keypad operation
(4) By inputting a trip clear signal from communication
(Refer to communication manual for details.)
To reset the inverter by panel keypad operation, follow these steps.
1. Press the STOP key and make sure that  is displayed.
2. Pressing the STOP key again will reset the inverter if the cause of the trip has already been eliminated.
When any overload function [: inverter overload, : motor overload] is active, the inverter
cannot be reset by inputting a reset signal from an external device or by operation panel operation
before the virtual cooling time has passed.
Virtual cooling time ...  : about 30 seconds after the occurrence of a trip
In case of a trip due to overheat (), the inverter checks the temperature within. Wait until the
temperature in the inverter falls sufficiently before resetting the inverter.
The inverter cannot be reset while the emergency stop signal is being input from the terminal.
[Caution]
Turning the inverter off then turning it on again resets the inverter immediately. You can use this mode of
resetting if there is a need to reset the inverter immediately. Note, however, that this operation may damage
the system or the motor if it is repeated frequently.
Same as  (overcurrent)
Same as  (overvoltage)
Same as  and  (overload)
Same as  (overheat)
 : about 120 seconds after a occurrence of a trip
M-5
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