KEB COMBIVERT F5 Series, Instruction Manual

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GB - 19
GB
3. Annex
3.1 Overload Characteristic
3.2 Overload protection in the lower speed range
(only valid for F5-M and F5-S, stall current see technical data)
Load [%]
E.OL2 E.OL
Stall current
Short-time limit current
Min. frequency at
continuous full load
OC-tripping current
If the permissible current is exceeded a PT1-element (
τ
=280ms) starts, after its sequence of operation
the error E.OL2 is triggered.
Start of overload
integrator at 105%
f [Hz]
Annex
Time [s]
Load [%]
30
60
90
120
150
180
210
240
270
300
0 105 110 115 120 125 130 135 140 145 150 160 170 180 190 200 210 220
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.
Curve 1
30
60
90
120
150
180
210
240
270
300
0 105 110 115 120 125 130 135 140 145 150
Time [s]
Load [%]
Curve 2