Toshiba H9 operation manual Program ⇒ Special ⇒ Jump Frequencies, Direct Access Number F270

F270 F270

Figure 29. UP/Down Frequency Operation Control Timing Diagram.

Jump Frequency 1

Program ⇒ Special ⇒ Jump Frequencies

In conjunction with parameter F271, this parameter establishes a user-defined frequency range: the Jump Frequency and a plus-or-minus value.

During acceleration, the output frequency of the drive will hold at the lower level of the Jump Frequency range until the programmed acceleration ramp reaches the upper level of the Jump Frequency range. At which time the output frequency of the drive will accelerate to the upper level of the Jump Frequency range and continue upward as programmed.

During deceleration, the output frequency of the drive will hold at the upper level of the Jump Frequency range until the programmed deceleration ramp reaches the lower level of the Jump Frequency range. At which time the output frequency of the drive will decelerate to the lower level of the Jump Frequency range and continue downward as programmed.

Once set up and enabled, it is on in all control modes.

User-selected frequencies may be jumped to avoid the negative effects of mechanical resonance.

Direct Access Number — F270

Parameter Type — Numerical

Factory Default — 0.00

Changeable During Run — Yes

Minimum — 0.00

Maximum — Max. Freq. (F011)

Units — Hz

130 H9 ASD Installation and Operation Manual