2.2 Lift Cabin Audio Unit - Universal

Description

The user is not in a direct contact with this product.

The controls and indicators depend on the lift cabin control panel type. The indicators (e.g. bulbs or LEDs) are working in accordance with the applicable standards.

Address Setting – see the Installation section for details.

Figure: Lift Cabin Audio Unit – Universal

Before You Start

Requirements

• The panel has to be installation-ready, including loudspeaker perforation.
• The panel has to be equipped with the following obligatory elements:
  • ALARM button;
  • Backlit symbol "Request accepted";
  • Backlit symbol "Connection established".
• The above mentioned elements have been located as required by applicable regulations.
• There must be free space of at least 65×130×20 mm behind the panel.

Product Completeness Check

Check the product for completeness before installation please:

• 1 board with electronics
• 4 terminals slid on the board pins, see the photo
• 4 jumpers slid on the board pins, see the cover print
• 1 mounting panel
• 1 directly/cable-connected loudspeaker
• 1 directly/cable-connected microphone
• 1 printed cover
• 5 tightening strips

Mounting

Main Board Mounting

This audio unit is mounted behind the lift control panel. Typically, the panel is ready for installation as shown in the drawing below:

To mount the audio unit, you need 4 electrically spot welded M3 or M4 screws, a sufficiently large loudspeaker perforation area and a microphone hole on the inner (back) side of the panel. If needed, you can fix the audio unit on a perfectly degreased surface with a good-quality two-sided foam self-adhesive tape.

Separate Microphone Mounting

If the microphone is separated (connected by cable) it has a 25×25 mm large board with self-adhesive foil. This helps you mount it easily behind any hole in the panel (the minimum hole diameter is 5 mm, or a group of smaller holes of the same total area). Just glue the microphone directly onto the required place from behind (be sure to degrease and clean the surface carefully before!).

Requirements

• The minimum distance between the loudspeaker 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.
• Make sure that the glued-on microphone does not pick up (even partially!) the acoustic pressure from the space behind the panel. Such sensing might result in acoustic feedback since the loudspeaker strongly radiates sound into the cavity.

Separate Loudspeaker Mounting

The loudspeaker is equipped with a cable and can be separated from the electronics by simply sliding it out within the reach of the cables delivered (1m). 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 loudspeaker sealed to eliminate vibrations.

Frequently Asked Questions Concerning Loudspeaker

• Is it possible to use a common loudspeaker for the communicator and floor announcing machine?
  • No, it is not.
• May I use a loudspeaker of my own?
  • Yes, but make sure that the impedance is 64 Ω. By doing this you assume responsibility for sufficient volume and frequency range.
• May I place the loudspeaker on the cabin ceiling?
  • This placement is not recommended.
• May I use a longer cable with the loudspeaker?
  • Yes, but not with the microphone.

Electric Installation

Description of Terminals, Connectors and Jumpers

Figure: Description of Terminals, Connectors and Jumpers for Lift Cabin Audio Unit – Universal

Address Setting

The audio unit address means setting of two jumpers, namely the lift number (1 to 8) and audio unit position (refer to the cover drawing). If you install the audio unit in the cabin of lift 1, you need not change the jumper configuration. In other cases, follow the instructions below:

Instructions

1. Release slightly the three screws on the electronics cover.
2. Slide the cover to the right to expose the jumpers.
3. Set the required changes as shown on the electronics cover.
4. Replace the cover and tighten the screws.

 

Bus Connection

The connection polarity is arbitrary.

ALARM Button Connection

Requirements

The ALARM button design (colour, symbol, button surface, mechanical run) and location have to meet the requirements of the particular installation.

Button control

Requirements

• The ALARM button has to be equipped with a normally open (NO) or normally closed (NC) contact that is not connected with any other circuit.
• None of the ALARM button terminals may be connected electrically with any other electrical circuit and a voltage source other than the NO/NC contact.
• If one of the ALARM contacts is connected to another circuit, appropriate isolation strength according to applicable standards has to be ensured between the contacts.

Instructions

1. Leave the ALARM terminal in the LOW position (3).
2. With a normally closed contact, leave jumper (12) – right in the default position.

3. With a normally open contact, switch jumper (12) – right into the HIGH position.

Voltage control

Requirements

• DC 12 to 48V voltage
• The voltage signal has to be active even in the case of power failure.

Instructions

1. Switch the ALARM terminal by two pins up into position (2).
2. For activation by voltage connection, leave jumper (12) – right in the default position.
3. For activation by voltage disconnection, switch jumper (12) – right into the HIGH position.

CANCEL Input Connection (Door Contact, Optional)

This input helps cancel a rescue request if the lift is fully functional. When the ALARM button is pressed, the system waits for a pre-programmed period of time, which is a little longer than the maximum lift running time. If the lift is functional, it arrives in the required station within this timeout and opens the door. In that case, the rescue request is cancelled. If the door fails to open, the request is accepted.

Find out before installation whether the door opening signal is available in the lift cabin.

Requirements

• In double-door lifts, the signal has to be active only if both the doors open successfully and let the people out.
• The door position signal has to work even in the case of power outage.

Contact control

Requirements

• None of the CANCEL terminals may be connected electrically with any other electrical circuit and a voltage source other than the contact.

Instructions

1. Keep the CANCEL terminal in the LOW position (5).
2. With a normally open contact, leave jumper (12) – left in the default position.
3. With a normally closed contact, switch jumper (12) – left into the LOW position.

Voltage control

Requirements

DC 12 to 48V voltage

Instructions

1. Switch the CANCEL terminal by two pins up into position (4).
2. For activation by voltage connection, leave jumper (12) – left in the default position.
3. For activation by voltage disconnection, switch jumper (12) – left into the LOW position.

Indicator Connection

The basic configuration providing (using an external source) a sufficient illumination intensity of indication elements is shown in the figure:

 

Figure: Basic Indicator Connection for Lift Cabin Audio Unit – Universal

Requirements

• The DC power supply has to be backed-up.

Alternative indicator connection (LED)

Today's LED producing technologies help achieve a relatively good illumination intensity at a low current supply. If a 5 mA LED (with diode loss of approx. 2V) is able to provide efficient illumination in the lift, no power supply is needed. For this configuration see the figure below:

 

Figure: Alternative Indicator Connection for Lift Cabin Audio Unit – Universal

Induction Loop Connection

The regulations that apply to communicator installations may require a mandatory loop for persons with defective hearing in the lift cabin. In that case, connect the loop to connector (10) with any polarity. The loop including a 1m long cable can be part of your delivery if agreed.

Requirements

• The induction loop has to be placed behind a non-metal, non-magnetic cover in the control panel because the magnetic field of the induction loop cannot go through the metal control panel.
• The induction loop has to be labelled with an appropriate symbol (ear) placed according to applicable standards.