РУ/EN
Basic modules

4IOS. Multifunction I/O Module

4IOS. Multifunction I/O Module

At a Glance:

  • 4 relay outputs with floating switch contacts for
    • Remote operation and control functions
    • Distribution of loudspeaker circuits
  • 8 opto-coupler inputs with secured status transmission
    • For diverse signals
    • To monitor the status of systems
  • To generate voice acknowledgements

The module 4IOS has 4 relay outputs with floating switch contacts, over which control and remote processes can be triggered as well as loudspeaker circuits distributed.

The module 4IOS provides interfaces as link between the DVS-21 system and the outside world. It is able to pass DVS-21 internal statuses as floating signals to the outside world and non-floating signals from the outside world as floating signals to the DVS-21 system. For this, eight opto-coupler inputs and four relay outputs can be used.

The 4IOS module has four independent identical sets.

Application Description:

Application example for the 4IOS with PA and intercom systems
Fig. Application example for the 4IOS with PA and intercom systems

The 4IOS module can be used in various applications and includes the following functions:

  1. In PA systems the function “Distribute Loudspeaker Circuit” [LK- Aufteilung]
    In this function the relay output can be monitored with an opto-coupler in respect to voice output.
  2. In PA and intercom systems the function “Floating Signal or Control Outputs” [potentialfreie Melde- oder Steuer- Ausgänge]
    In the case of transmissions over several systems, the mode of op-eration, “Secure Transmission” [Gesicherte Übertragung] can be activated; this means that an appropriate signal will be outputted when an error occurs.
  3. In PA and intercom systems the function e.g. “Alarm input” [Alar-meingang]
    (also binary coded)

These are configured through available programmes in the firmware ICS or speci-fied modes of operation.

Function Description:

The principle functions are illustrated in the following block diagram.

Block diagram 4IOS
Fig. Block diagram 4IOS

The 4IOS consists essentially of a control unit and the 4 independent sets. Each set is equipped with a relay and 2 opto-couplers.

The relay makes available a floating switch contact.
The two opto-couplers have a common “minus” connection.
The first opto-coupler takes directly the “plus” of its input in a current-limiting way; for the second the input voltage is also debounced (a few ms). Besides this a switch threshold of approx. 5 V is specified through a Zener diode.
This input is used as a rule for low frequency (LF) monitoring.

To realize diverse tasks, switching can be done into 5 different modes of opera-tion per functional group (set), with the help of the ICS software.

"Standart" Operating Mode

In the mode of operation “Standard” all I/O channels are freely configurable through the ICS software and independent of one another. Here relay outputs are switched or opto-coupler inputs queried through sending and receiving of DVS-21 line frames.

Modes of Operation for Secured Status Transmission

  • Secure Sender
  • Secure Receiver
  • Secure Receiver (inv.)

If transmission of status information over several systems requires additional security for the internal DVS-21 hardware and data transmission data link layer then 2 units of 4IOS groups (sets) can be coupled together. In this way an addi-tional data link layer is established between the two sets in which security re-lated statuses can be received, transmitted and outputted again.

For this the mode of operation “Secure Sender” is assigned to the source and the mode of operation “Secure Receiver” to the target, or in the case of low ac-tivity output, the mode of operation “Secure Receiver (inv.)”.

The secure sender transmits in cyclical intervals (times can be configured in the ICS software) two further verification elements (line frames) in addition to the ac-tual status information.

If, in the case of error, the verification elements do not arrive at the target then when a configurable time expires the status output including the last status are frozen and a line error is signalled.

If the verification elements are properly received at the target, but the status in-formation not verified, then every time the verification elements are received a transmission error will be signalled.

Only after proper reception as well as verification of the verification elements and status information will the error signals be reset.

Only verified status information will be outputted.

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.

The Front Plate Symbols and their Meaning:

The System Blinker The System Blinker
Addressing from processor follows
I/O Input/Output
BUS output works as push-push operation with the system blinker
BUS input works as push-pull operation with the system blinker
I Opto-coupler 1, Not Debounced
Refer to the table below for more information
I/ Opto-coupler 2, Debounced
Refer to the table below for more information
0 Status Display of the Relay
Refer to the table below for more information
Al Status Display of the Transmission, Two-colour
Refer to the table below for more information (not freely programmable)

LED Displays (depending on the set):

Operating ModeLED / Behaviour Meaning
"Standard" and "Secure" I illuminated Signal to opto-coupler input 1
"Standard" and "Secure" I/ illuminated Signal to opto-coupler input 2
"Standard" Al illuminated red Line 4 being received
"Standard" Al illuminated green Line 5 being received
"Secure Sender" Al brief double blinking green Sending of both verification elements
"Secure Sender" Al brief single blinking green Sending of one verification elements
"Secure Reciever" Al brief double blinking green Sending of both verification elements
"Secure Reciever" Al brief single blinking green Sending of one verification elements
"Secure Reciever, inv" Al brief double blinking green Sending of both verification elements
"Secure Reciever, inv" Al brief single blinking green Sending of one verification elements
"Voice Acknowledgement" I illuminated Signal to opto-coupler input 1
"Voice Acknowledgement" I/ illuminated LF (100V) to opto-coupler input 2
"Voice Acknowledgement" 0 illuminated Replay switched

Technical Data

Operating Voltage: +/-5 V (control)
Operating Voltage: 48 V
Operating Current (+5V): Max. 84 mA, 5 mA idle (relay current)
Operating Current (-5V): Max. 70 mA, 0 mA idle (relay current)
Operating Current (48V): Max 64 mA (opto-coupler)
Interfaces: 4x2 opto-couplers each with 1 debounced, 24-60 v operating voltage
4 x relay switch contact, max. 1 A
4 x -48 V fused voltage
Weight: 170 g
Installation Height: 3HE
Installation Width: 6TE