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Adjusting overexcitation control during deceleration
(1)
First, set A083 to 0.3 and A084 to 130 to shorten the deceleration time.
(2)
If you need to set a higher target value for the deceleration time, or to detect an over-
voltage with the above settings, first set A083 to 0 and increase the value set in A084
gradually from 130 while checking the deceleration time at each gain level. The
adjustment is completed if the inverter achieves the target deceleration time.
(3)
If an overload or overcurrent occurs
If an overload or overcurrent occurs as a result of overexcitation control during decelera-
tion, take the following countermeasure.
Overload
As the motor consumes regenerative energy, frequent decelerating movements may
cause an overload.
In this case, decrease the value set in A084 gradually and check the inverter state.
If the inverter cannot achieve the target deceleration time or causes an overload, you
need to purchase optional braking resistors.
Overcurrent
If the applied voltage during deceleration is too high, the inverter may detect an over-
load.
If an overcurrent is detected, decrease the value set in A084 gradually and check the
inverter state.
If the inverter cannot achieve the target deceleration time or causes an overcurrent,
you need to purchase optional braking resistors.
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