Figure 5: Turn-Off Time T Depending On The Overload I/In At Oc Level 180 - KEB COMBIVERT F6 Series Instructions For Use Manual

DeVIce DATA OF THe 400 V DeVIceS
500
400
300
270
240
210
180
150
120
90
60
30
0
110
Legend
①
Thermal overload limit
②
Limitation by the software current limit (the limit can be set with parameter is35)
Figure 5: Turn-off time t depending on the overload I/IN at OC level 180%
•
•
•
After a cooling down period, the integrator can be reset now. The drive converter must
remain switched on during the cooling down phase.
Operation in the range of the thermal overload limit
Due to the high steepness of the overload characteristic, the duration of a permissible
overload in this range ① cannot be determined exactly. Therefore, the design of the
drive converter should be assumed to have a maximum overload time of 300s.
Overload characteristic (OC level 180%)
①
120 130 140
Motor current / drive converter rated currrent / %
On exceeding a load of 105 % the overload integrator starts.
When falling below the integrator counts backwards.
If the integrator reaches the overload characteristic „Error! overload (OL)" is trig-
gered.
②
150 160 170 180
43