[4] Kinetic back-up The adjustable frequency drive will ride through by controlling speed for
generative operation of the motor utilizing the moment of inertia of the
system as long as sufficient energy is present.
NOTE
For best performance of controlled ramp-down and kinetic backup, par.1-03 Torque Characteristics should be set to
Compressor
Variable Torque
[1] (no automatic energy optimization should be active).
Figure 4. 2: Controlled ramp-down - short line failure. Ramping down to stop, followed by ramping up to reference.
Figure 4. 3: Controlled ramp-down, longer line failure. Controlled ramp-down, longer line failure.
Figure 4. 4: Kinetic backup, short line failure. Ride through as long as the energy in the system allows for it.
4-122 TR200 Programming Guide
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