power automation PA 8000 - Page 103

The distance between the measuring systems and
the power supply can be relatively long. The ohmic
resistance of the power supply cable and the RMS'
current consumption generate a voltage drop.
Fig. 83: Schematic encoder power supply voltage drop
1 Power supply
2 Rotating measurement system (RMS)
U
A
Supply output voltage
U
1
Voltage drop
U
2
Voltage at the RMS
U
3
Voltage drop
As shown in the figure, the voltage U
2
equals the difference
between the output voltage U
A
and the voltage drop U
1
+U
3
.
Adjusted voltage U
2
= U
A
- (U
1
+ U
3
)
Precondition
PA 8000 PAMIO
PAMIO Components
12.01.2017 | 103