Lenze DSD - Manual (Page 128)

7 Applications
7.9 Hoist drive with counterweight
128
Lenze · Drive Solution Designer · Manual · DMS 4.2 EN · 12/2013 · TD23
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For cable-guided hoists both single- and multi-cable guides via guide pulleys, so-called reevings
(pulley block principle) are used. In the case of multi-cable guides the circumferential speed of the
driving pulley is an integer multiple of the lifting speed. The required torque at the driving pulley is
decreased by the reeving factor k
L
, and the speed increases by this factor.
The reeving has no impact on the drive power (except for highly dynamic movements).
[7-105] Reeving of the load
 Reeving for a cable guide via guide pulleys. The reeving factor N
L
in this case is 4 ().