Lenze EVF9333−xV - Manual (Page 345)

Configuration
Monitoring
Heatsink temperature
8
8.3
8.3.8
l
8.3−7 EDSVF9333V EN 6.2−04/2012
Diagram for the determination of the release times of a motor with a
thermal motor time factor of 5 min:
I = 3 × I
mot r
0
50
100
120
0 100 200 300 400 500 600 700 800 900 1000
t [s]
I t [%] 2 I = 2 × I
mot r
I = 1.5 × I
mot r
I = 1 × I
mot r
9300std105
Fig. 8.3−2 I 2 × t−monitoring: Release times for different motor currents and trigger
thresholds
Imot Motor current
I
r
Rated motor current
I 2 t I 2 t load
T Time
8.3.8 Heatsink temperature
Via a temperature threshold, the heatsink temperature of the controller can
be monitored:
ƒ Adjustable threshold (OH4) under C0122
– The reset point is 5° C below the adjusted threshold.
ƒ Fixed threshold (OH) = 85° C
– The reset point is at 80° C.
The response for exceeding the adjustable threshold can be set under C0582.
Reading the release time off
the diagram