8
F 1 function
Extended functions – F 1 function:
The F 1 function permits the setting of
fi
ve different characteristic curves (Figure 5) for the
control of the speed at the power control unit. The characteristic curve is selected sequen-
tially by pressing the F 1 function key several times.
The central characteristic curve that is displayed by the central green LED is linear. This
means that throughout the entire range of rotation every angle of rotation on the control
knob creates the same increase in speed. This characteristic curve is automatically activa-
ted when the device is switched on.
The characteristic curves arranged to the left (A and B) correspond to the behavior of lo-
comotives on the track with heavy trains. These accelerate very rapidly at the start of the
journey but then require a long time before they reach top speed.
For this reason the characteristic curve has a more marked increase in acceleration in the
lower sector than in the upper sector given the same angle of rotation of the control knob.
Even increases in speed simulate the driving behaviour of trains: It initials starts up quickly
and is then followed by an even more gradual increase in speed.
The far left central characteristic curve that is displayed by the red LED corresponds more
closely to the behaviour of a heavy goods train in this case, the characteristic curve B dis-
played in yellow to the right corresponds to the behavior of an express train.
The characteristic curves (D and E) to the right of the green LED simulate the characteristics
of shunting units. In this case they travel very slowly within a wide range.
However the low shunting speed will be reached very quickly by the locomotives. In this
case two characteristic curves are once again available which generate a lower increase in
the speed of the locomotive than in the above curve with the same angle of rotation. Here
too the deviation from the linear characteristic curve C in the case of the far right characte-
ristic curve E displayed in red is greater than in the case of D signalized in yellow.
Figure 5 – Charactertistic curves of the F 1 function
Output 0 – 100 %
Power control unit setting 0 – 120
Characteristic curve A
Characteristic curve B
Characteristic curve C
Characteristic curve D
Characteristic curve E
Characteristic curve A
= left red LED
Characteristic curve B
= left yellow LED
Characteristic curve C
= middle green LED
Characteristic curve D
= right yellow LED
Characteristic curve E
= right red LED
