Procom 4IOS - Manual (Page 5)

Data Sheet
4IOS
Multifunction I/O Module
Sending and receiving of verification elements is indicated through one or two
green blinks of the two-colour LED. This serves as quick confirmation for sender
and receiver.
In the modes of operation for secure status transmission no changes can be
made on the two-colour LED through programming. It is used exclusively for in-
ternal purposes. All other I/O channels are fully available, in as far as they are
not in use here.
Operating Mode “Voice Acknowledgement”
In the operating mode “Voice Acknowledgement” the existing relay can be
used as loudspeaker circuit relay and switched using the line frame Li 03
ON/OFF. Through additionally cutting in with the debounced opto-coupler on a
100 V LF source, a voice acknowledgement (sending of the line frame Li 02
ON/OFF from 4IOS module) can be generated.
An upcoming LF signal is signalled by the I/LED on the front plate. A positive
voice acknowledgement is generated (sending of the line frame Li 02 ON) and
signalled when the LF level is sufficient.
A generated positive public address acknowledgement is only reset when the
public address is switched off or by cutting in with a new public address with
higher priority.
By sending the line frame Li 08 ON/OFF to the 4IOS module the relay can be
switched without generating a public address acknowledgement.
In the mode of operation “Voice Acknowledgement” the opto-coupler 1 can be
freely used for other functions. Care must be taken, however, that both opto-
couplers have a common earthing point.
Date: 13.03.2009 Page: 5/8 Author: HS Document-No.: DB_4IOS_2804_01
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