Theory
Rev A 05/01/01 // SB
190113_A
49
V
A
6.4
THEORY 4. OPERATION OF ANGLE SENSOR
Measuring current:
The ammeter
is used to measure current at the angle input signal. Remove the wire from
X1:29 terminal in the central unit and measure the current with the ammeter in series. The
measurement should be between 4..20mA.
Measuring voltage:
The voltmeter is
used to measure voltage between pins X1:29 (angle signal) and X1:28 (gnd)
on the main board (024-352-300-001). The resistors are there to show that at 4mA the voltage is 1.1V
because current multiplied with resistance equals voltage; therefore, 4mA x 275 ohms (total
resistance) = 1.1V.
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