6-31
6-6 Stall Prevention Function
Astallwilloccurifthemotorcannotkeepupwiththerotatingmagneticfield
on the motor stator sidewhenalarge load is appliedto the motoror a sud-
den acceleration/deceleration is performed.
In the 3G3MV, stall prevention functions can be set independently for
accelerating, running, and decelerating conditions.
n092 Stall Prevention during
Deceleration
Register 015C
Hex
Changes during
operation
No
Setting
range
0, 1 Unit of
setting
1 Default setting 0
Set Values
Value Description
0 Stall prevention during deceleration
1 No stall prevention during deceleration
·If 1 is set, the motor will be decelerated according to the set deceleration time. If the
deceleration time is too short, the main circuit may result in overvoltage.
·If 0 is set, the deceleration time will be automatically lengthened to prevent overvol-
tage.
·Be sure to set n092 to 1 to disable stall prevention during acceleration if the braking
resistororBrakingResistorUnitisinuse.Ifn092issetto0,nodecelerationtimereduc-
tionwillbepossiblebecausethebrakingresistororBrakingResistorUnitconnectedis
not used.
Stall Prevention during Deceleration with n092 Set to 0
Output
frequency
Deceleration time is controlled
to prevent overvoltage.
Deceleration time (Set value)
Time
Advanced Operation Chapter 6
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