Lenze ECSCx Axis cold plate - Manual (Page 82)

Safety instructions
Thermal motor monitoring
Forced ventilated or naturally ventilated motors
2
l
82 EDKCSCX064 DE/EN/FR 4.0
Read release time in the diagram
Diagram for detecting the release times for a motor with a thermal motor time
constant of 5 minutes (Lenze setting C0128):
I = 3 × I
Mot N
0
50
100
120
0 100 200 300 400 500 600 700 80
L [%] I = 2 × I
Mot N
I = 1.5 × I
Mot N
I = 1 × I
Mot N
9300STD105
Fig. 2−1 I 2 × t−monitoring: Release times for different motor currents and trigger thresholds
I
Mot
Actual motor current (C0054)
I r Rated motor current (C0088)
L I 2 x t load of the motor (display: C0066)
T Time