10 Characteristics
10.1 Overload characteristic
Time in s
30
60
90
120
150
180
210
240
270
300
0 105 110 115 120 125 130 135 140 145 150
Load in %
Figure 39: Overload characteristic
On exceeding a load of 105% the overload integrator starts. When falling below the
integrator counts backwards. If the integrator achieves the overload characteristic that
corresponds to the drive converter, error E.OL is triggered.
10.2 Overload protection in the lower speed range
Applies only to operating modes MULTI and SERVO.
Load in %
E.OL2 E.OL
OC-tripping current
Short time current limit
Start of overload integrator
at 105%
Stand still current
(=> Technical Data)
f / Hz
Min. frequency at continuous full load
(=> Technical Data)
Figure 40: Overload protection in the lower speed range
A PT1 element (t = 280 ms) starts if the permissible current is exceeded. After its se-
quence of operation the error E.OL2 is triggered.
96
CHARACTERISTICS
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