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7.5
Analog Output Modules
Analog output modules convert the bit patterns that are output by the CPU
into analog output voltages or currents.
Connection of
No adjustments are necessary if you want to connect loads to analog outputs.
Loads to Analog
Check the following items before connecting loads:
Output Modules
Figure 7-9 shows how to connect loads to the voltage outputs of the follow-
ing modules.
Connect sensor lines (S+ and S –) directly to the load, so that the voltage is
measured and regulated directly at the load. Using this method, you can com-
pensate for voltage drops of up to 3 V per line.
You can eliminate the sensor lines if the resistances of the QV and M lines
are negligible compared to the load resistance.
In such a case, connect terminal S+ to terminal QV, and terminal S– to
M
ET 200U Distributed I/O Station
EWA 4NEB 812 6087–02b
The 24 V DC load voltage must be connected to terminals 1 and 2.
The maximum permissible potential difference between the outputs is
60 V AC.
Unused outputs must be left open–circuited.
470–8MA11 (2
10 V)
and
470–8MD11 (2
+1 to 5 V)
.
ANA
Analog Value Processing
7-25
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