Parameters Description
Crane | 67
Figure 3.10 – Slack cable detection operation
Description of the identified moments:
1
– The load lowering command is given through the digital input DI2. The motor becomes magnetized, and
voltage and frequency are applied to it. The brake remains closed.
2
– The motor frequency reaches the threshold adjusted in P1041 and the command to release the mechanical
brake through the digital output DO1 is executed.
3
– The motor begins to regenerate energy supplied by the load and the load detection time while lowering the
load, programmed in P1055 starts elapsing.
4
– With the brake release, the load lowering with the speed reference 1 adjusted in P1031 begins.
Содержание Crane CFW500 series
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