Foil 62
7. Mechanical Components
7.4 Brush Head Lifting Unit
7.4.1 Potentiometer in the Brush Head Lifting Unit
The potentiometer of the lifting element is powered by a 2.5 V reference voltage at
A1.X19:1. Reference point for this voltage is A1.X19:3. Depending on the position of
the potentiometer, the voltage at A1.X19:2 is between 0 and 2.5V.
Measuring point :
A1.X19:1
– A1.X19:3
2.5V Reference Voltage
A1.X19:2
– A1.X19:3
0..2.5V 0...2.5V depending on the position of the lifting
element
Possible faults :
A1.X19:1- A1.X19:3
less than 2.5V or 0V
Short circuit in the wiring or in the potentiometer. 0V indicates a a short circuit to
ground. Voltage less than 2.5V indicates an overload of output A1.X19:1.
A1.X19:2
– A1.X19:3
:
permanent 0V
Interruption in the wire to A1.X19:1 or A1.X19:2, faulty lifting element
A1X19:2
– A1.X19:3:
permanent 2.5V
Interruption in the wire to A1.X19:3, faulty lifting element
Содержание Scrubmaster B 115 R
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