A Annex - Graphs; Overload Characteristic; Overload Protection In The Lower Speed Range; Figure 41: Overload Characteristic - KEB COMBIVERT F5 Instructions For Use Manual

ANNEx - GrAPHS

A Annex - Graphs

A.1 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, the error E.OL is triggered.
A.2 Overload protection in the lower speed range
OC-tripping current
Short time current limit
Start of overload integrator
at 105%
Stand still current
(see technical data)
Figure 42:

Overload protection in the lower speed range

Time [s]
330
300
270
240
210
180
150
120
90
60
30
0
0 105 110 115 120 125 130 135 140 145 150
Figure 41:

Overload characteristic

• The characteristic curve only applies for operating modes MULTI and
SErVO.
• Not for operating mode AFE.
Load [%] A PT1-element (τ = 280 ms) starts if the permissible current is ex-
ceeded. After its sequence of operation the error E.OL2 is triggered.
E.OL2
Load [%]
Min. frequency at continuous full load
(see technical data)
E.OL
f [Hz]
79