Annex; Overload Characteristics; Overload Protection In The Lower Speed Range - KEB COMBIVERT F5 Series Instruction Manual

3.

Annex

3.1 Overload Characteristic
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 rating plate)
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.
3.2

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
integrator 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
Annex
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
continuous full load
Load [%]
GB
f [Hz]
GB - 19