Annex; Overload Protection In The Lower Speed Range - KEB COMBIVERT F5 Betriebsanleitung

4.

Annex

4.1 Overload Characteris-
tic
Curve 1
Time [s]
300
270
240
210
180
150
120
90
60
30
0 105 110 115 120 125 130 135 140 145 150 160
The characteristic declines device-dependently in this range (see unit identification).
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 inverter, the error E.OL is triggered.
4.2

Overload Protection in the lower Speed Range

(only valid for F5-M and F5-S, stall current see technical data)
OC-tripping current
Short-time limit current
Start of overload integra-
tor at 105%
Stall current
If the permissible current is exceeded a PT1-element (τ=280ms) starts, after its sequence of operation the error E.OL2
is triggered.
Load [%]
170 180 190 200 210 220
Load [%]
E.OL2
Curve 2
Time [s]
300
270
240
210
180
150
120
90
60
30
0 105 110 115 120 125 130 135 140 145 150
E.OL
Min. frequency at conti-
nuous full load
Load [%]
f [Hz]
29