Lenze ECSDS Série Instructions De Montage page 86

2 Safety instructions
Thermal motor monitoring
Self−ventilated motors
Effect of code C0129/x
I / I N
1.1
1.0 3
0.9
0.8
0
0.7
0.6
0
0
Fig. 2−2 Working point in the range of characteristic lowering
The lowered speed / torque characteristic (Fig. 2−2) reduces the permissible
thermal load of self−ventilated standard motors. The characteristic is a line the
definition of which requires two points:
Point 0: Definition with C0129/1
ƒ
This value also enables an increase of the maximally permissible load.
Point 1: Definition with C0129/2
ƒ
With increasing speeds, the maximally permissible load remains
unchanged (I
In Fig. 2−2, the motor speed and the corresponding permissible motor torque (3)
can be read for each working point (2on the characteristic (0) ... 1). 3 can also
be calculated using the values in C0129/1and C0129/2 (evaluation
coefficient "y", ¶ 87).
86
1
C0129/2
2
C0129/1
0.1 0.2 0.3
0.132
= I ).
Mot rated
0.4
l
n / n N
9300STD350
EDKCSDX064 DE/EN/FR 3.0