Lenze DSD Manual de usuario descargar pdf (Pagina 125)

100

101

Lenze · Drive Solution Designer · Manual · DMS 4.2 EN · 12/2013 · TD23 125

7Applications

7.9 Hoist drive with counterweight

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

Ascertainment of the height difference

For the stationary torque the maximum height difference Δh is required.

[7-100] Determination of Δh

Torque loss

For including the losses for the hoist the friction torque is calculated from the individual efficiencies.

When carrying out a dimensioning process with a user-definable motion profile, the efficiency for a

travel with the maximum stationary torque is assumed.

• The sign is considered with the fraction n/|n|.

• The friction of the cable rolls is considered as efficiency η

Pll

in a simplified manner. The efficien-

cy depends on the number of cable rolls, the reeving, and the efficiency of the individual rolls.

• The following equation calculates the torque loss in generator and motor mode:

[7-101] Equation 8: Torque loss

• The height Δh usually is the height differ-

ence from the cable end of the counter-

weight to the cable end of the payload at

the lowest position of the payload or the

counterweight.

• The yellow highlighted cable sections

(+) are decisive for the steady-state

torque.

• The cable sections (+, +) cancel

themselves out or are borne by the mount-

ing parts .

Δh







Gdn

Pll

Cor

⋅⋅

-----------------------------------------

1–





max M

sds

()

------

⋅⋅=

1 2 ... 120 121 122 123 124 125 126 127 128 129 130 ... 495 496

Comentarios a estos manuales

Sin comentarios

Lenze DSD Manual de usuario Pagina 125

Comentarios a estos manuales

Relacionado con productos y manuales para Software Lenze DSD