Mode

Alarming Modes

There are two alarming modes in TNA devices:

Default (EN 50136): The sensors and actors of the TNA are operating according to the EN 50136-1:2012/A1:2018 standard. This standard specifies the requirements for the performance, reliability and security characteristics of alarm transmission systems. The parameters for this mode are defined in the Sensors and Actors tabs of the TNA Web Server.

Fire (EN 54-21): In addition to the parameters defined in the default mode, extra parameters are configured for actors activation according to the EN 54-21:2006 standard. This standard specifies the requirements for fire detection and fire alarm systems. The extra parameters for this mode are defined in the Mode tab of the TNA Web Server.

Fire mode has 2 extra configuration options:

• Fire Alarm Input

• Fire Alarm Fault Input

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Fire mode is supported in ipTNA4i devices only.

When these 2 sensors are assigned, the alarm transmission for these sensors cannot be disabled.

In Fire mode, actors have the following pre-defined modes:

Actor Number	Pre-defined Mode	Activation condition
1	Fire Alarm Positive Acknowledge	The actor is activated for 2 seconds after the Fire Alarm input state change is confirmed by evalink talos.
3	Critical fault	In addition to regular Critical fault contact conditions, Critical fault is also activated when Fire Alarm Input has Short or Open circuit state. Note: In order to detect Short or Open circuit on Fire Alarm input, it is necessary to activate Loop supervision for this sensor.
4	Fire Alarm Negative Acknowledge	It works like regular Negative Acknowledge contact but only when Fire Alarm input state changes. i.e. the actor is activated for 2 seconds if: After 100 seconds if the alarm is not acknowledged by evalink talos within this time period. Immediately if the TNA has no connection with evalink talos

Communication between ipTNA4i and the Control and Indicating Equipment

The standard defines the following types of communication between ipTNA4i and the Control and Indicating Equipment (CIE):

• Receiving fire alarm signal from the CIE: The receiving is performed in the same way as it is done for other sensors. An appropriate message about the sensor state change is send to evalink talos.

• Transmitting acknowledgement to the CIE: As soon as the notification sent to evalink talos is acknowledged, Actor 1 and LED8 are activated for 2 seconds in order to forward this acknowledgement to the CIE.

• Transmitting fault warning signals to the CIE: The following faults are transmitted to the CIE:

  1. Actor 4 and LED9 are activated for 2 seconds if the Positive Acknowledge is not received within 100 seconds. Event repetitions are stopped at this time.

  2. Actor 4 and LED9 are activated for 2 seconds if there is no connection available to send fire related notification to evalink talos.

• Receiving fault warning signal from the CIE: The receiving is performed in the same way as it is done for other sensors. An appropriate message about digital value change is send to evalink talos.

Communication between ipTNA4i and Fire Alarm Receiving Center

The standard defines the following type of communication between ipTNA4i and fire Alarm Receiving Center (ARC):

• Receiving fault warning signals from the transmission network

• Transmitting fire alarm signal to the fire alarm receiving center

• Receiving acknowledgement signal from the alarm receiving center

• Transmitting fault warning signals to the fault warning receiving center

Fire Alarm System Related Indication

The standard defines the following separate indicators on the ipTNA4i board:

• Acknowledgement signal from fire alarm receiving center is received: The indication of this event is performed with Actor 1 and LED8. The LED is turned off and turned on during 2 seconds in order to confirm acknowledgment receiving.

• Fire alarm system related fault: The indication of this event is performed with Actor 3. The actor switches to closed until the fault is resolved then it switches back to open.

Change the Alarming Mode

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Access level 3 or above is required to change the alarming mode.

Mode changing requires to restart the TNA.

To change the alarming mode, do the following:

1. On the TNA Web Server, navigate to notifications_none Alarming > settings_applications Mode

2. Form the drop-down, click on Default (EN 50136) or Fire (EN 54-21)

3. If you choose Fire (EN 54-21), assign the Fire Alarm Input and Fire Alarm Fault Input sensors

4. Click on Save

5. (Optional) Click on Undo changes to reset the parameters to their previous values