Avoiding Trips - Toshiba TOSVERT VF-AS3 Instruction Manual

6. 15 Avoiding trips

Occurrences of trips may be avoided using the appropriate function in consideration of the causes of
alarms or trips.
6. 15. 1
<F301: Auto-restart>
For detailed settings of auto-restart, refer to [5. 4. 2].
6. 15. 2
4
<F302: Regenerative power ride-through>
4
<F310: Dec time at power failure>
<F313: Ridethrough time>
6
<F317: Synchronized stop time>
<F318: Synchronized reach time>
<F625: Undervoltage detection level>
<F629: Regenerative power ride-through level>
■ Function
9
Select the reaction to a momentary power failure during operation from regenerative power ride-
through, deceleration stop at power failure and synchronized Acc/Dec.
• Regenerative power ride-through: When a momentary power failure occurs, the operation is
continued using the regenerative energy of the motor.
• Deceleration stop at power failure: When a momentary power failure occurs, the operation is
stopped forcibly and swiftly using the regenerative energy of the motor. The deceleration time
varies by the control. "StOP" is displayed on the operation panel during the stop. After the
deceleration stop at power failure, the stop state is kept until the run command is turned OFF.
• Synchronized Acc/Dec: For a spindle winder of textile machine or the like, multiple machines are
stopped in a lined-up manner or brought to reach the frequency command simultaneously during
momentary power failure or restoration of power to prevent thread breakage.
■ Parameter setting
Title
F302
F310
6. [Advanced] How to use parameters
Restarting smoothly after momentary power failure
(restarting from motor coasting state)
Selecting operation for momentary power failure
Parameter name
Regenerative power ride-
through
Dec time at power failure
F302 : Regen power ride-through
0: Disabled
1: Regen power ride-through
2: Dec stop at power failure
3: Synchronized Acc/Dec(TB)
4: Synch Acc/Dec TB+power failure
Adjustment range
0: Disabled
1: Regenerative power ride-through
2: Deceleration stop at power failure
3: Synchronized Acc/Dec (TB)
4: Synchronized Acc/Dec (TB + power
failure)
0.0 - 320.0
6-54
E6582062
STOP 0.0Hz
13:15
Unit Default setting
0
s 2.0