Lenze DSD - Manual (Page 331)

Lenze · Drive Solution Designer · Manual · DMS 4.2 EN · 12/2013 · TD23
331
11 Drive Dimensioning
11.3 Mechanical brake selection
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
11.3.6 Selection table
The selection table presents the parameters of the brakes which can be selected.
• A distinction between preview values and further parameters is to be made.
• A basic description of the selection table and tools for a quick selection of suitable components
can be found here:
 Structure of the selection tables ( 34)
 Sorting and filtering results in selection tables ( 35)
Description of the parameters
Parameter Unit Description
Metric Imperial
k
S
% % Safety factor of the brake
• The safety factor is calculated from the ratio of the
rated braking torque and the braking torque required.
• The result is limited to 10 and is displayed even if
the value calculated is higher.
• The DSD only checks the dimensioning as holding
brake!
Possible messages:
 Rated torque/dimensioning torque < safety factor of
the brake ( 461)
t
brk
~ (M
B
) s s Theoretically calculated braking time
• For the calculation of the actual braking time this val-
ue must not be used.
Type Type designation of brake
Relevant topics:
 Spring-applied brake (BFK) ( 327)
 Permanent magnet holding brake (PMB) ( 327)
Size Size of the brake
M
B
Nm lbfft Rated braking torque of the brake