Datasheet

Functions of the board APCI-3xxx
8.5 Digital outputs
The APCI-3xxx has 4 optically isolated outputs.
The positive logic is applied:
- logic"1": Sets the output by software.
- logic"0": Resets the output.
NOTICE!
The supply unit for the external voltage supply of the
board must supply the power that is needed for your
application.
The max. supply voltage is 35 V.
For each output a current of 50 mA can be set.
The total current for all outputs is limited through a Polyswitch protection
piece to 300 mA:
Characteristics of the 24 V outputs:
- Short circuit proof: The output is switched off
- Overtemperature protection: The output driver is switched off
- Transil diodes, C filter and optical couplers reduce interferences from the
peripheral to the system bus area. Inductive or capacitive incoupled
interferences are reduced.
Fig. 8-7: Output circuitry (24 V)
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