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5.3.5 Frequency to Bypass
H13: Frequency to Bypass (Factory Default: 0.0 Hz)
Range:0.0 - F9 Hz.
H14: Frequency Bandwidth To Bypass (Factory Default: 0.0 Hz)
Range:0.0 - 30.0 Hz.
Undesirable resonance and vibration on the motor shaft of the hoist or crane could
occur within a certain frequency range due to the structure of the machine. This
frequency bypass function is used to lock that frequency band out of operation.
Most of the time, this phenomenon occurs only at a specific frequency. The jump
frequency also has its own bandwidth. This is a span of the particular bypass
frequency selected. See Fig. 5.3.6.
Fig. 5.3.6: Frequency Bypass
Output freq.
preset freq.
Jump frequency H13
Bandwidth H14
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