Lenze DSD - Manual (Page 121)

Lenze · Drive Solution Designer · Manual · DMS 4.2 EN · 12/2013 · TD23
121
7 Applications
7.8 Hoist drive without counterweight
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Determination of the mass
The cable mass is either calculated by means of the mass calculator (field: cylinder) or with the fol-
lowing equation:
7.8.2.10 Active cable mass
7.8.2.11 Shaft efficiency
7.8.2.12 Efficiency of the rolls
7.8.2.13 Lifting speed
7.8.2.14 Mass of the payload
m
Rop
ρ
Rop
l
Rop
10 π
d
Rop
200
-----------
 
 
2
⋅ ⋅ ⋅ ⋅ =
Symbol Description
m
acv,Rop
Active mass of cable
• Is the mass that is relevant for the stationary moment, i.e. the mass that acts as a weight on
the cable drum.
• Value can be entered directly or calculated using the auxiliary calculator.
"Mass of rope/cable (hoist drive)" calculator ( 414)
Symbol Description
η
Gdn
Efficiency resulting from the friction of the hoisting cage at the hoisting shaft
Symbol Description
η
Pll
Efficiency resulting from friction between the cable rolls and the cable
Symbol Description
v Lifting speed of the payload
• Value is entered in the Motion dimensioning step.
Symbol Description
m
L
Mass of payload
• Value is entered in the Motion dimensioning step.