Lenze DSD - Manual (Page 129)

Lenze · Drive Solution Designer · Manual · DMS 4.2 EN · 12/2013 · TD23
129
7 Applications
7.9 Hoist drive with counterweight
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7.9.2.3 Reeving, counterweight
For cable-guided hoists, also with counterweight, both single- and multi-cable guides via guide pul-
leys, so-called reevings (pulley block principle) are used.
[7-106] Reeving of counterweight
7.9.2.4 Mass of counterweight
7.9.2.5 Mass of hoisting cage
Symbol Description
N
Ctw
The reeving of the cable to the counterweight.
• The reeving is the ratio of the driving pulley cable velocity to the lifting speed of the counter-
weight.
 Reeving for a cable guide via guide pulleys. The reeving factor N
Ctw
in this case is 3 ().
Symbol Description
m
Ctw
Mass of counterweight
• Value can be entered directly or calculated using the auxiliary calculator.
"Mass of counterweight (hoist drive)" calculator ( 413)
Symbol Description
m
Cbn
Mass of the hoisting cage or conveying tools for the payload
• Value can be entered directly or calculated using the mass calculator.
Mass calculator ( 405)