2.11.1 Fireman PCB

Description: 1-Button Version

The Fireman audio unit improves the fire fighting operations by setting up top priority calls between the Fireman audio unit and the cabin and machine room audio units in one and the same lift shaft.

Install the Fireman audio unit in a dedicated space that can be easily accessed by firemen.

The Fireman call has the highest priority, suspending all the other calls (refer to Function Description). It is connected with the cabin audio unit in one and the same shaft.

The Fireman call is made by a button press. The call is hands-free and terminated by pressing the button again. The maximum possible call duration is unlimited. 

The Fireman call setup is signalled by the Fireman audio unit LED (mounted on the PCB or carried externally from connector 8). 

The Fireman call is indicated by a flashing green LED on the machine room audio unit. The audio unit microphone is off by default. Press and hold the TRIPHONY button for 3 seconds to activate the microphone and enable communication within a fire call. Once the microphone is activated, the TRIPHONY button starts flashing. 

Description: 2-Button Version (Push-To-Talk)

The Fireman audio unit improves the fire fighting operations by setting up top priority calls between the Fireman audio unit and the cabin and machine room audio units in one and the same lift shaft.  

Install the Fireman audio unit in a dedicated space that can be easily accessed by firemen.

The Fireman call has the highest priority, suspending all the other calls (refer to Function Description). 

The Fireman call is set up by pressing a lock button. The call is hands-free and terminated by pressing the lock button again. The maximum possible call duration is unlimited. ).

The Fireman call setup is signalled by the Fireman audio unit LED (blue LED shining around the button). 

The two-button version allows you to connect another, Push-to-Talk button. Pressing the Push-to-Talk button silences all the other audio units connected to the fire call and the sound is only transmitted from the Fireman audio unit. When you release the Push-to-Talk button, audio transmission is re-enabled from the other audio units. 

The Fireman call is indicated by a flashing green LED on the machine room audio unit. The audio unit microphone is off by default. Press and hold the TRIPHONY button for 3 seconds to activate the microphone and enable communication within a fire call. Once the microphone is activated, the TRIPHONY button starts flashing. 

Before You Start

Fireman audio unit package contents:

• • 5 straps
  • 1 electronics board
  • 3 board-slid terminals, see the photo
  • 1 board-mounted jumper (defining the button version)
  • 1 speaker (directly or cable connected)
  • 1 microphone (directly)
  • 1 printed cover

Installation Conditions

• Make sure that the panel is ready for installation, check the speaker perforation area.
• Make sure that there is 65×130×20 mm of free space behind the panel. 
  
  
  

Mounting

Electronic Installation

Prepare the panel for installation as shown below:

Figure: Mounting Hole Dimensions

To mount the unit, you need 4 electrically spot-welded (from the inner panel side) M3 or M4 screws, a sufficiently perforated speaker area and a microphone hole. If needed, a high-quality double-sided foam self-adhesive tape can be used for installation on a perfectly degreased surface.

Requirements

• The minimum distance between the speaker and microphone centres is 90 mm. A lower distance may lead to acoustic feedback. A greater distance (within the available 1m cable) does not matter. 
  
  

Separate Speaker Mounting

The speaker is equipped with a cable and can be separated from the electronics by simply being slid out within the reach of the cables delivered (1 m). This option is useful where there is not enough space for the whole electronic equipment. Fit the loudspeaker according to the instructions below:

• While gluing choose such procedures or adhesives that prevent membrane damage by adhesives and volatile substances, or heat.
• We recommend you to keep the speaker sealed to eliminate vibrations and ensure electric insulation.
  
  

Frequently Asked Questions Concerning Speaker

• Can I use a speaker of my own?

Yes, but keep the impedance of 64 Ω. Doing this, however, you assume responsibility for sufficient volume and frequency range.

• Can I use a longer cable for the speaker?

You can use a longer cable for the speaker, but not for the microphone.

Electric Installation

Description of Terminals, Connectors and Jumpers

Figure: Terminals, Connectors and Jumpers

Terminals		Connectors
1	Audio unit bus	7	Unconnected
2	Unconnected	8	LED
3	Unconnected (1-button version) Fireman call activation – with detent (2-button version)	9	Microphone connector (optional)
4	Unconnected	10	Induction loop connector
5	Activation/Deactivation – without detent (1-button version) Push to talk – without detent (2-button version)	11	Speaker connector
6	Unconnected	13	Servicing connector
Configuration Jumpers		Two LED Indicators (from the other side)
12	The lower pin defines the button count jumper connected – 1 button (default) jumper unconnected – 2 buttons	1. (yellow)	Shining – active Fireman call Flashing – Push to talk (for 2-button versions only)
		2. (green)

Bus Connection

Pull the terminal out of connector 1 – Audio units bus, connect the bus audio units wires and replace the terminal to connector 1. Mind the polarity. 

Volume Setting

Loosen the four screws slightly and move the cover downwards. Remove the cover. Use the trimmer in the lower part of the electronics to adjust the volume (see the figure below).