Digital Outputs - Addi-Data APCI-2032 Technical Description

APCI-1032, APCI-1564 and APCI-2032
8.3

Digital outputs

The boards APCI-1564 and APCI-2032 are supplied with 32 optically isolated outputs.
The positive logic is used
logic "1": sets the output by software,
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logic "0": resets the output.
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WARNING !
The device for the voltage supply of the board must deliver at
least the power required for your application.
24 V version (APCI-2032, APCI-1564)
The maximum supply voltage is 36 V. Each output can switch 500 mA current.
But the current is limited for every 16 outputs to approx. 3 A by a self-resetting fuse.
If all channels are switched, a maximum current flow of 187.5 mA per output is
allowed.
Features of the 24 V outputs:
Protection against short-circuit: the outputs are switched off.
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Protection against overtemperature: shut-down logic. Each group of 8 outputs is
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switched off.
The outputs are switched off if the ext. supply voltage drops below 5 V.
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Transorb diodes, C filters and opto-couplers filter noise from the peripheral to the
system bus. Thus the effects of inductive and capacitive noise are reduced. Possible
noise emissions are also reduced by C filters.
5 V version
The maximum supply voltage is 12 V. Each output can switch 50 mA current.
But the current is limited for every 8 outputs to approx. 400 mA by a self-resetting fuse.
If all channels are switched, a maximum current flow of 50 mA per output is allowed.
Features of the 5 V outputs:
Protection against short-circuit: the outputs are switched off.
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The outputs are switched off if the ext. supply voltage drops below 3 V.
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The board requires no initialisation to output the digital information.
You can program the outputs immediately after successful power ON reset
State after power ON: all the outputs are reset (switched OFF).
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Functions of the board