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Configuration
______________________________________________________________________________
Footbrake Zero Volts
Calibrator Menu Reference:
Minimum
Maximum
0.00V
4.50V
Footbrake Full Volts
Calibrator Menu Reference:
Minimum
Maximum
0.00V
4.50V
As the input voltage varies from the Zero level to the Full level, the footbrake demand varies from
0% to 100%. When the footbrake demand is at 0%, there is no footbraking. As the footbrake
demand increases from 1% to 100%, the braking level applied by the system increases from 50%
of the Footbrake Level personality to 100% of the Footbrake Level personality.
For example, assume the system is configured to have a footbrake pot and the Footbrake Level
personality is set to 60%. If the operator has not depressed the footbrake pedal, then the voltage
into the controller will be outside of the Footbrake Zero Level personality and the footbrake
demand will be 0%. There will be no Footbraking.
If the operator starts to press the footbrake pedal, then the footbrake demand will increase. When
the demand increases above 0% the system will start braking and will set the braking effort
according to the following formula:
braking
So, for this example, at 1% demand the braking effort would be
and at 75% demand the braking effort would be
MillipaK 4QPM Controller Manual
Step Size
0.02V
Step Size
0.02V
footbrake
2
=
effort
braking
braking
effort
Immediate
11.12
Typical Value
0.10V
Immediate
11.13
Typical Value
3.50V
demand
+
50
×
footbrake
100
1
+
50
2
=
effort
100
=
30
%
75
+
50
2
=
100
=
52
5 .
%
Page 30
Performance/Braking
level
personalit
×
0 6
×
0 6
y
13/08/03
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