LSIS iG5H Series, Manual

Page: 144 / 225

Advanced functions
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Adv
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Fun
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8.24 Stall Prevention and Power Braking
Group Code Parameter Name Setting Range Default Unit
Function
group 1
F 4 Select stop method 3
0 - 3 0
F 59
BIT 0: stall prevention
under Accel
BIT 1: stall prevention
under constant speed
BIT 2: stall prevention
under Decel
- 0 - 7 0
F 61 Select voltage limit under Decel - 0 - 1 0
►
Stall prevention (decel) is set as default. And power braking function can help to avoid
Over voltage trip.
►
Overvoltage trip prevention when reducing speed: a function preventing overvoltage trip
when reducing speed or at stop by using the regeneration braking power.
►
Power
Braking : Adjusting the deceleration slope or accelerate again, when inverter’s
DC voltage rises above a certain level by the electric motor’s regeneration energy. It
can be used when short deceleration time without braking resistance is needed.
However, be aware that the deceleration time can get longer than the set one and when
it’s used at a load that frequently decelerates, be cautious of damage caused by the
motor’s over heating.
Stall prevention and Power Braking only operate when decelerating, and Power Braking has
the precedence. That is, when BIT2 of F59 and Power Braking of F4 are both set, Power
Braking operates.
F61(selecting voltage restriction when decelerating) is visible when BIT2 of F59 is set.
Overvoltage trip may occur, if the deceleration time is too short or the inertia too big.
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