Pilz Cable PMCprimoDrive>Mod-Profibus:L=0,45m - Manual (Page 53)

Operating Manual: PMCtendo AC 12-3
Derating
When dimensioning the drive you should take into account the factor K
total
. It is
calculated from the factors K
height
, K
temp
and K
duty
:
K
total
= K
height
* K
temp
* K
duty
The factor K
total
can be used to calculate the permitted torque:
Permitted torque = K
total
* Rated torque M
N
Derating diagram: Installation height
Rated tor
que M
N
[%]
0
20
40
60
80
100
120
500 1000 1500 2000 2500 3000 3500
Installation height [m above sea level]
K
height
Example:
Installation height = 2000 m above sea level
According to the diagram (Fig. 12-1), at this installation height the permitted torque is
approx. 90 % of the rated torque M
N
.
This gives the following for factor K
height
:
K
height
= 0.9.
Fig. 12-1: Permitted torque in relation to installation height