Bell System bell free Dokumentacja Pobierz pdf (Strona 9)

BF Apartment Station 1 Way System

PD-167 Issue 1C Installation and Operating Manual Page 9 of 44

Design Considerations

Equipment List

A BF1 one-way bellfree Video Kit comprises the following: -

Model No

Description

1 x BF

Colour apartment station

1 x BFP1

Vandal resistant panel with a BF-AMP speech unit, VR buttons and camera.

1 x BFD1

Door controller.

1 x PS4

4A 12V power supply.

1 x 203

Fail-secure lock release, alternate types available

Options

The following options are available: -

● Extensions using model BF apartment station(s).

● Extensions using Videophone model BS.

● Extensions using Audio only phones model BSA.

● Additional entrances, each comprising a BFD1 controller and BFP1 panel.

(See also power supply requirements).

● Alternative lock releases, fail-safe and fail-secure.

● Timed Trades facility; specify TRBS to add another button and a TS2000-BST time-

clock. The extra button will be engraved “TRADES”

● Exit button. Model 5077 surface and model 5078 flush versions are available.

● Battery back-up power supply, Model 840 (12V 4A).

● DDA panels (Contact sales for further information).

Entrance Panel – Important Note

Careful consideration should be given to the location of the entrance panel to ensure the

best possible lighting conditions for the camera. In general strong back lighting of the

subject (by the sun and sky) should be avoided, as the contrast between foreground and

background may be too great for the camera. The field of view should contain as little of

the sky as possible, particularly if south facing. If a backlit situation is unavoidable,

additional lighting may be necessary to illuminate the caller and avoid a dark outline image

(silhouette). A light coloured or reflective surface around the panel will redirect backlight to

illuminate the caller.

Door Controller

The door controller and power supply should be wall-mounted in a convenient cupboard or

other protected environment with available mains power. Cable length to the entrance

should be less than 50m. The door controller for the second and subsequent entrances

may be situated in the same location, or to meet the 50m requirement may be situated in

another location. Power supplies may be shared between door controllers placed in the

same location, but controllers in separate locations must be separately powered.

Separately Powered Apartment Stations

The limitation of up to 4 apartment stations ringing but only one displaying, as indicated in

the power supply and cable distance tables on page12, can be overcome by the use of

supplementary power from a 340C.

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