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What function does changing frequency loop gain perform on the unit?

Frequency loop gain changes the responciveness of unit to a change in load. As this parameter is increased the unit becomes less responciveness and as you decrease this value the drive becomes more responsive. The parameter acts the same as a parameter called bandwidth which is present on some of the other drives.
Changing is dependent on the inertia and resistive torque of the driven mechanical equipment:
-machines with high resistive torque or high inertia: progressively reduce FLG
-machines with fast cycles, low resistive torque or low inertia: gradually increase the gain
Keep in consideration that an excess of gain can cause unstable operation.


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