User Manual

Connecting analog outputs
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08/04 AWB2528-1423GB
the current involved. If the fault condition persists, the
output will keep switching off and on until the fault is
corrected or until the power supply is switched off
(a Section “Monitoring of short-circuit/overload with
EASY..-D.-T..”, Page 297).
Connecting analog
outputs
EASY820-DC-RC and EASY822-DC-TC each have an analog
output QA 01, 0 V to 10 V DC, 10 bit resolution (0 to 1023).
The analog output allows you to control servo valves and
other final controlling elements.
Connecting servo valves
Figure 32: Connecting servo valves
Caution!
Analog signals are more sensitive to interference than
digital signals. Consequently, more care must be taken
when laying and connecting the signal lines. Incorrect
switching states may occur if they are not connected
correctly.
0 V
0 V
24 V H
...V
L01 –
F1
L01 +
I1
I2
I11
I12
0 V
QA1