Bell System 2-72 Multi Way User manual

Bell System (Telephones) Ltd.
PD-307 Issue 2 June 2017
tabellet
2-72 Multi Way
Video Door Entry System
With
Hands-free Colour Apartment Stations
Installation & Operation Manual
This manual applies to the following: -
BFD2-72 Way Door controller –Version 1 Builds 1
tabellet Colour Apartment Station –Version 1 Build 1 to 2
BS Colour Videophone –Version 2 Builds 1 to 3
XL5-BS Audio Phone –Version 1 Build 1
BSC4 Video Controller –Version 2 Build 7

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tabellet Apartment Station
BFD8 controller
BSC4 controller
XL5-BS audiophone
BS videophone
BS Deskphone

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TABLE OF CONTENTS
TABLE OF CONTENTS......................................................................................................3
INTRODUCTION .................................................................................................................4
DESCRIPTION .....................................................................................................................4
MAIN FEATURES.................................................................................................................4
BASIC SYSTEM OPERATION............................................................................................6
DESIGN CONSIDERATIONS..............................................................................................9
EQUIPMENT LIST.................................................................................................................9
OPTIONS............................................................................................................................9
POWER SUPPLY REQUIREMENTS .......................................................................................11
CABLE SPECIFICATION ......................................................................................................13
CABLE DISTANCES............................................................................................................14
INSTALLATION & COMMISSIONING..............................................................................15
CHECKLIST.......................................................................................................................15
WIRING............................................................................................................................15
COMMISSIONING...............................................................................................................19
BFD8/72 DOOR CONTROLLER SWITCH SETTINGS...............................................................20
BFD8/72 DOOR CONTROLLER JUMPER SETTINGS ..............................................................22
BSC4 VIDEO CONTROLLER SETTINGS................................................................................23
DOOR SPEECH VOLUME ADJUSTMENT................................................................................25
TABELLET APARTMENT STATION SWITCH SETTINGS.............................................................26
BS VIDEOPHONE SWITCH SETTINGS ..................................................................................27
TROUBLESHOOTING ......................................................................................................28
COMMON FAULTS .............................................................................................................28
QUICK FAULT REFERENCE.................................................................................................28
SPECIFICATIONS.............................................................................................................31
DIAGRAM A –2-72 WAY BASIC SYSTEM WIRING OVERVIEW ...................................33
DIAGRAM B –BFD8 PCB DETAIL ..................................................................................34
DIAGRAM C –2-72 WAY BASIC SYSTEM WIRING DETAIL..........................................35
DIAGRAM D –BSC4 PCB DETAIL..................................................................................36
DIAGRAM E –BSC4 WIRING DETAIL.............................................................................37
DIAGRAM F –LARGE SYSTEM OVERVIEW..................................................................38
DIAGRAM G –EXTENSION APARTMENT STATION WIRING.......................................39
DIAGRAM H –APARTMENT STATION LOCAL POWER WIRING.................................40
DIAGRAM I –CAMERA SHARING & TIME CLOCK SHARING ......................................41
DIAGRAM J –2-72 WAY ADDITIONAL DDA WIRING ....................................................42
DIAGRAM K –COMBINED CONNECTIONS BELL FREE WITH LOCK..........................43
DIAGRAM L –COMBINED CONNECTIONS THIRD PARTY LOCK................................45
SAFETY INFORMATION AND DECLARATIONS ............................................................47

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Introduction
Description
A tabellet video door entry system consists of a door panel, positioned at the entrance of a
building, video apartment stations, placed inside of the building for the convenience of the
occupants and a power supply and controller which are usually located inside an electrical
cupboard. The door panel comprises of a two-way speech unit, a camera and several
push buttons –one of which must be depressed by a visitor to initiate a call. The
apartment station, which rings in response, allows a two-way hands free conversation (a
touch is required to initiate the conversation and end the conversation) whilst the caller can
be observed through the integral display. The operator can selectively allow visitors
access to the building by touching a pad on the apartment station and so electrically
releasing the door.
The tabellet 2-72-way Video Door Entry System is suitable for any building requiring
multiple push buttons at the entrance, such as blocks of flats or multiple offices. For
buildings requiring a single push button at the entrance, such as houses, individual flats
and offices, please refer to the “tabellet 1-way Video Entry System” manual. For a digital
panel with display, refer to the tabellet Digital System.
The tabellet “2-72-way” system is supplied with a dedicated door controller, for each
entrance, and a video controller for every four apartment stations. The basic system
supports 1 apartment station per call button, and up to 3 extension apartment stations
(more with additional power supplies). Multiple entrances can be supported with the
addition of one panel and one door controller for each entrance.
Main Features
●Enhanced audio for hands free operation
●Cat5 cable throughout; no co-ax required!
●3.5” Flat screen high resolution TFT colour display.
●High resolution CCD colour day/night camera with infrared lamps.
●12V d.c. operation
●High quality full-duplex speech amplifier.
●Automatic picture display while ringing.
●Ringer mute function.
●Ringer volume control.
●Fail safe or fail secure lock releases and magnetic locks (maglock).
●Lock release timer.
●Tradesman facility (optional).
●Facility for exit button and/or fire switch.
●Door open indication.
●Second camera option.
●Up to 3 extension Apartment stations per flat.
●DDA panel options.
●Multiple entrances supported.

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tabellet Colour Apartment Station
Mode
Handset
Camera
Sounder
Key
Idle
Off
Off
Off
Off
Idle Mute Active
Off
Off
Red
Off
Idle Door Open
Off
Off
Off
Red
Idle Mute and Door Open
Off
Off
Red
Red
Ringing
Blue Flash
Blue Flash
Off
Off
Muted Ring
Blue Flash
Blue Flash
Red
Off
Video Answer or CCTV
Blue Flash
Yellow
Off
Green Flash
Talking
Blue
Yellow
Off
Green Flash
Adjustment Mode
Blue
Yellow
Red
Green
Doorbell
Off
Off
Red Flash
Green Flash

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Basic System Operation
Call sequence
When the call button is pressed at the entrance panel the apartment station will ring and
its blue pickup / view lamp will flash, highlighting the pickup and view symbols. The
apartment station will continue to ring for up to 30 seconds or until the resident responds
by touching the view symbol (see silent viewing below) or the pickup symbol. After using
the pickup symbol the resident can freely converse with the visitor whose image is now
displayed on the apartment station; at the same time the green lock symbol will flash to
highlight the lock function.
The call may be terminated by touching the pickup symbol again or more usually by
touching the lock symbol first to allow the visitor access through the entrance; the speech
and picture will persist for a further 3 seconds while the door is being released.
Silent viewing
When the apartment station is ringing the resident can touch the view symbol to answer
the call instead of the pickup symbol; this will stop the apartment station ringing and
enable them to view the visitor for up to 60 seconds or until the lock symbol is touched to
release the door. Silent viewing can be ‘normalised’ at any time by touching the pickup
symbol and conversing with the visitor as described above.
Apartment Station Controls
The diagram in the introduction shows the apartment station and its controls. The controls
are adjusted by touching the end of the slider and sliding the finger up and down. The
default setting is ringer volume halfway and contrast slider fully down.
Auto Display
When ‘Auto Display’ mode is selected the picture will come on while the apartment station
is ringing, otherwise the picture will only come on when the call is answered. Auto Display
mode is usually pre-selected at installation and generally only one apartment station per
flat should be set in this mode (see ‘Extension Apartment Stations’ below).
Ringer Mute
The resident can mute the ringing sound in the apartment station when they do not wish to
be disturbed. Ringer mute is activated by touching the mute symbol on the apartment
station, which then illuminates in red as a reminder. Touching the mute symbol a second
time will disengage the mute function. Ringer Mute only stops the audible ring, but the
blue ring lamp will still flash and all other functions work normally. Ringer mute will
continue for the pre-set time even if a call is answered.
During installation it is possible to set a time limit for the mute function in various values
from 2 minutes up to 10 hours or indefinitely. When this time period has elapsed the mute
function will automatically disengage. Default timeout is never (See ‘mute timer’, page 26).
Door Status Indication
The green lock lamp on the apartment station will illuminate to warn the resident that a
door has been left open following a call. This feature requires a door monitor contact to be
fitted.

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Call Privacy
Once a call has been made from an entrance panel only the apartment station(s) which is /
are ringing may answer the call. Once the call is answered another apartment station will
not activate (including extensions of the active apartment station).
User Activation (CCTV Mode)
User activation is a feature of the bellfree 1 way system and is not available on multi-way
systems. User activation is generally not recommended on larger systems as the
conflicting demands of residents and callers can result in confusion and erroneous fault
reports.
Cameras
The door controller has the capability of using one or two cameras, for instance a second
panel camera for DDA or a ‘third party’ ‘CCTV’ camera located to offer a different entrance
viewpoint. Touching the view symbol will alternate the view between camera 1 and
camera 2 (if enabled).
Note. The camera to controller wiring has termination options which allow for connections
to other video equipment. See the Camera sharing diagram on page 41 for details.
Extension Apartment Stations
Additional apartment stations may be added to the basic system. The number of
extensions is limited only by power supply considerations. All apartment stations for that
‘flat’ will ring when called however typically only the master unit will display a picture while
ringing. Once the master or extension apartment station is ‘picked-up’ the picture will
display on that unit alone. An extra power supply may be used to allow extension
apartment stations to display a picture while ringing.
Lock Type
The door controller supports both fail-secure and fail-safe locks including magnetic locks of
up to 1A rating. The lock time may be programmed between 1 and 99 seconds. (See
‘Lock Operating time’ and ‘Lock Type’ on page 21.
Exit Button and Fire Switch
An input is provided for an exit button, which can be installed on the inside of the door and
allow residents to exit freely. Momentary operation of this button will operate the lock
release for the programmed lock time. A Fire switch or other override device may use the
same input to hold the door open indefinitely. Note. Fail secure locks must be
continuously rated.
Trades Facility
Use of a time clock in conjunction with a trades button will allow free access during the
programmed time(s).
DDA Functionality
The bellfree video system has a range of options for entrance panels to help meet the
requirements of the Disability Discrimination Act (DDA), including Illuminated Tactile
buttons, reassurance tones and LED indicators for “Speak Now” and “Door Open”.
Contact your sales representative for further details.
Reassurance tone setting is on page 22.

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Multiple Entrances
The bellfree system allows multiple entrances to be catered for by the addition of a door
controller and entrance panel for each entrance and additional power supplies.
In a multiple entrance system an optional feature allows the resident to view the cameras
at all the entrances with successive touches of the view symbol.
For details of this camera feature and user activation see the setting for ‘Camera
Numbering’ on page 22.
Gate and Block Systems
Sites with two or more blocks sharing one or more site entrances are catered for with our
BSSW Gate controller. The blocks can then work independently but will receive calls from
the shared entrance.
For further details see the “bellissimo and Bellcall Manual Gate and Block (PD-120)”.

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Design Considerations
Equipment List
A tabellet-n tabellet Video Kit (where n is the no of ways) comprises the following: -
Model No
Description
N x tabellet
Colour apartment station
1 x BFPn
Vandal resistant panel with a BF-AMP speech unit, VR buttons and
camera.
1 x BFD8 or BFD72
Door controller (BFD72 required for > 8 ways)
M x BSC4
Video controller (one required for every 4 ways = N/4 rounded up)
K x PS4
4A 12V power supply. (one required for every 8 to 16 ways)
1 x 203
Fail-secure lock release, alternate types available
E.g. A TB6 Six way tabellet Video Kit comprises the following: -
Model No
Description
6 x tabellet
Colour apartment station
1 x BFP6
Panel with a speech unit and camera
1 x BFD8
Door controller
2 x BSC4
Video controller
1 x PS4
4A 12V power supply
1 x 203
Fail-secure lock release
E.g. A TB22 Twenty two way tabellet Video Kit comprises the following: -
Model No
Description
22 x tabellet
Colour apartment station
1 x BFP22/VR
Vandal resistant panel with a speech unit and camera
1 x BFD72
Door controller
6 x BSC4
Video controller
2 x PS4
4A 12V power supply
1 x 203
Fail-secure lock release
Options
The following options are available: -
●Extensions using model tabellet apartment station(s).
●Extensions using Videophone model BS.
●Extensions using Audio only phones model XL5-BS.
●Additional entrances, each comprising a BFD8 or BFD72 controller and BFPn
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).

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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.
Video Controller
The video controller(s) and power supply(ies) should be wall-mounted in a convenient
cupboard or other protected environment with available mains power. Cable length to the
apartment station should be less than 150m, see ‘Cable Distances’ page 14. In many
cases the video controllers will be in the same location as the door controller(s), but they
may be distributed as required to reduce wiring distances. When placed in different
locations, each location must have its own local power supplies.
Gate Controller
The gate switch controller BSSW is wired between the block door controllers and the video
controllers, so would normally be wall mounted next to a door controller.
For further details see the “bellissimo and Bellcall Manual Gate and Block (PD-120)”.
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 page 14, can be overcome by the use of
supplementary power from a 340C.

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Power Supply Requirements
The system is powered by 12V power supplies only: -
Model PS4 12V, 4A.
Model 840 12V, 4A battery backup supply.
Model 340C 12V, 1.5A optional for extensions.
Note 1. The 28V referred to on the apartment station, video controller and wiring diagrams
is internally generated in the controller. DO NOT use any power supply other than 12V or
damage may occur.
Note 2. The PS4 power supply has been specifically designed to operate with the high-
surge requirements of the system. Bell System is unable to guarantee functionality or
provide support for systems which use third party power supplies.
Exact power supply requirements depend upon many factors. The number of power
supplies included within a standard ‘kit’ or quotation assumes that all controllers are
installed in one location and that there are no extensions.
The following table gives examples of the minimum number of controllers and power
supplies for a given number of entrance doors and flats.
System
Control Equipment and Power Supplies
1 door 6 flats
1 x BFD8 door controller
2 x BSC4 video controller
1 x PS4 12V 4A power supply
2 door 6 flats
2 x BFD8 door controller
2 x BSC4 video controller
2 x PS4 12V 4A power supply
1 door 20 flats
1 x BFD72 door controller
5 x BSC4 video controller
2 x PS4 12V 4A power supply
2 door 20 flats
2 x BFD72 door controller
5 x BSC4 video controller
3 x PS4 12V 4A power supply
Distributed installations will typically require more power supplies. Also the use of other
equipment such as coded access or proximity readers must be taken into account.

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The following table is a guide to how much equipment a PS4 power supply can safely and
reliably feed, please contact technical support for other variations.
Equipment 1 x PS4 can power
Comments
4 x BSC4 video controllers with 1 tabellet
apartment station per output.
16 apartment station s directly powered.
Extensions may be added if separately
powered by 340C’s.
2 x BSC4 video controllers with up to 4
tabellet apartment station per output.
Extension apartment stations must be set to
ring only, use the above configuration to
allow the extensions to have a picture while
ringing.
1 to 3 BSC4’s with phones plus extensions
16 apartment station s directly powered.
1 x BFD8/72 door controller and
3 x BFC4 video controllers with 1 tabellet
apartment station per output
12 apartment stations directly powered.
Extensions may be added if separately
powered by 340C’s.
1 x BFD8/72 door controller and
1 x BSC4 video controllers with up to 4
tabellet apartment stations per output
Extension apartment stations must be set to
ring only, use the above configuration to
allow the extensions to have a picture while
ringing.
2 x BFD* door controllers (any type) with up
to 2 cameras and 1A fail safe locks.
Both door controllers must be in the same
location. No spare current available for
other equipment unless both cameras or all
the lock current is not used.

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Cable Specification
All system wiring must be carried out using Cat5 signal cable and where necessary 1mm²
(or greater) power cable as tabulated below. Cat5 cable has a known performance for the
transmission of video signals, whilst telephone or alarm cables are not suitable.
Bell System will be unable to offer any warranty or support for systems installed
using incorrect cables.
Cat5 Cable Specification
Cat5 is our short reference for EIA standard UTP Category 5 Unshielded Twisted Pair data
cable. This is a standard solid core twisted pair cable having 4 pairs (8-cores) and no
shield. The cores are in pairs where Blue and ‘Blue with a White stripe’ are twisted
together as the first pair. The other three pairs are similar with main colours Orange,
Green and Brown.
Also available and acceptable are:
UTP Category 5e (Cat5e)
UTP Category 6 (CAT6)
UTP Category 6e (CAT6e)
The exact cable can be chosen from the above on cost and availability grounds.
STP (Shielded Twisted Pair) cables are not recommended.
UTP “patch cables” are not recommended.
NOTE: Cat5 cable is easily identifiable as the specification is printed on the sheath

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Cable Distances
Video Controller to tabellet Apartment Station
System
Distance
Cable
Comments
Single apartment station
per output or first
apartment station
< 100m
1 x Cat5
< 300m
1 x Cat5
2 x 1mm2
Single apartment station +
3 extensions on each
output, all cable powered
< 50m
1 x Cat5
Only Master apartment
station has ‘Auto display’;
extensions are daisy-chained
< 200m
1 x Cat5
2 x 1mm2
Single apartment station
per output with separately
powered extensions
< 100m
1 x Cat5
150m maximum to the cable
powered apartment station;
daisy-chain up to 300m total.
< 300m
1 x Cat5
2 x 1mm2
All apartment stations
locally powered with a
340C power supply
< 300m
1 x Cat5
Locally powered apartment
stations have ‘Auto display’;
extensions are daisy-chained
<25m to 340C
2 x pair of
Cat5
<100m to 340C
2 x 1mm2
Door Controller to Video Controller(s)
Distance
Cable
Comments
<200m
1 x Cat5
N.B. maximum total length from any camera to any apartment
station to be less than 300m
Entrance to Door Controller
Connection
Distance
Cable
Comments
Entrance Panel
<50m
7 x pair of Cat5
+1 wire per button
See page 33 for detail
Lock Release up to 1A
<10m
1 x pair of Cat5
<50m
2 x 1mm2
Option: Exit button
<50m
1 x pair of Cat5
Option: Trades button
<50m
1 x pair of Cat5
Requires a Time-clock
Option: Door Monitor Switch
<50m
1 x pair of Cat5
Option: Second Camera
<50m
2 x pair of Cat5
Power Supply to Controller
System
Distance
Cable
Comments
All Systems, each PS4 to
BFD8 or BFD72 or BSC4
<3m
2 x 1mm2
Total length of any daisy chain
<5m
2 x 1.5mm2
NB. A Cat5 cable has 4-pairs (8 cores)
For larger cable distances please contact manufacturer.

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Installation & Commissioning
Checklist
The following checklist is a summary of what is required. Refer to the relevant pages for
further details.
●Review the section headed ‘Safety Information’ on page 47.
●Ensure that ‘Design Considerations’ on page 9 have been understood.
●Confirm that Cat5 cable has been specified.
●Install the system according to instructions in this section.
●Check/set the door controller jumper and switch settings.
●Check/set the video controller jumper and switch settings.
●Check/set each apartment station dip-switch settings.
Wiring
Refer to the diagrams from page 33 onwards as appropriate for the equipment you have.
All wiring is carried out using a mixture of Cat5 for the signal wiring and 1mm² (or greater)
cores for the power wiring; refer to Page 13 for further details. It is strongly recommended
that a consistent colour code be used throughout such as that indicated on the connection
diagram. Certain signals must be interconnected using a twisted pair from the Cat5 cable.
These are clearly marked on the connection diagram and should be strictly observed.
Entrance Panel
The panel should be mounted at an optimum height of 1.6 m, measured between the
ground and the centre of the camera window. DDA considerations may reduce this height
to 1.4m. With flush mounting panels it is advisable to apply mastic to the top and side
edges of the panel to prevent water ingress behind the panel, but not to the bottom edge.
On construction sites the panel must be protected from corrosive substances such as
‘brick acid’. The panel should be cleaned only with a damp cloth containing dilute
detergent.

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Apartment Station
The tabellet is designed to be surface mounted onto a plaster or plasterboard wall using
the supplied steel bracket. The optimum screen height is 1.6m however DDA
considerations may reduce this height to 1.4m.
Instructions:
Warning. The heads of the countersunk screws must protrude less than 1mm or there will
be difficulty attaching the apartment station to the plate.
1) Using the bracket as a template, cut a square hole into the plasterboard ensuring
that the terminal block and other components on the back of the tabellet will clear.
2) A back-box is not required, however a standard flush-mounted single gang back-
box can be fitted if desired. The back box does not have to be secured to the
bracket but if this is desired, it is recommended that the bracket and back box be
bolted together first and then fitted to the wall as a single item.
3) Fix the bracket to the plasterboard using up to 8-off No8 (4mm) screws and suitable
plasterboard plugs. Ensure that the bracket is absolutely level when fitted.
4) Fit the tabellet unit by aligning it onto the 4 hooks of the wall bracket, and then
pushing gently towards the wall and sliding the tabellet down until it “clicks” into
place.
5) The tabellet can be removed from the wall mounting box by pushing upwards until it
slides off the bracket. When up far enough it will come forward and the wiring can
be accessed.
Doorbell
The tabellet has a doorbell function which typically would be operated by a local, non-
illuminated door push having a normally open contact.

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Extension Ringer
Primarily included for activating third party DDA devices the auxiliary ring output consists
of a pair of volt free contacts which close while the phone is ringing.
If the phone is muted the contacts do not close even though the phone may flash to
indicate ringing.
The contact rating is 1A non-inductive load.
XL5-BS Audio Phone
The XL5-BS audio phone can be used as a lower cost alternative to an
extension apartment station. The phone is manufactured in high-impact ABS
plastic that imparts high durability and compliments most wall furnishings. It
incorporates both mute and lock illuminated buttons and it has an Electronic
Ringing Tone with an internal rotary pre-set volume control.
Remove the top cover of the XL5-BS phone, which is secured by clips, by
using a screwdriver in the slots at the bottom to release the clips.
The XL5-BS audio phone should be fixed with two No 8 screws (not supplied).
Videophone (Alternative to Apartment Station)
The videophone is designed to be wall mounted onto plasterboard or other masonry at an
optimum height of 1.6m. It should be fixed with three No 8 pan head screws (not
supplied). Use the dimensions shown on the adjacent diagram. If the cable is to be fed
from the wall cavity then make a hole for this at the same time, the surface cable exit is to
the left of the cut-out. The top two screws are hidden fixings, so screw in but do not fully
tighten. Test hang the videophone and adjust the screws as required.
Now remove the top cover of the videophone, which is secured by a clip at the bottom.
Hang the videophone on the two screws already fitted allowing the cable (if present) to
feed through and the third screw to be inserted at the bottom. Tighten the third screw.
If the silicone rubber buttons fall out, clip them back into the PCB. Before replacing the
Front Cover remove the protective film from the display lens and also check that the
DipSwitch settings are correct or change as necessary (see Page 27).

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Electric Door Release
Both fail-secure and fail-safe lock releases (including magnetic locks) use the same
terminals. To set the lock type, refer to the ‘Door Controller Settings’. When installing lock
releases please allow a little movement on the door, as operation will be impaired if fitted
too tight.
NB. Magnetic locks (maglocks) must be fitted with a suppressor at the lock terminals.
Some manufacturers fit an acceptable internal suppressor.
Fail Safe Exit: Notes
Fail safe exits using maglocks require an exit button and this should be normally open so
that the controller can be used to give a timed exit. If the exit button has both normally
open and normally closed contacts, then the normally closed contact can be wired in
series with the release or maglock along with the break glass in case of equipment failure.
A not uncommon problem with maglocks, because they cannot be mechanically
overridden, is being locked out of the building due to lost codes, fobs or equipment failure.
So consider an alternate building entrance, or an externally accessible secure keyswitch,
or a reliable method of disabling the system during overnight secure lockup.
Fail Secure Exit: Notes
Commonly fail secure exit doors incorporate a thumb-turn, door handle or mini push bar
rather than use of an exit button. Fire officers usually require a minimum of door handle or
push bar to open a door on a fire exit route –not a thumb-turn.
Most fail secure locks are not continuously rated and if an electrical hold open system is
used for say busy times, then a continuously rated release must be used.
Powered bolt, shoot-bolt or other more secure door locking systems may require the use
of separate power supplies or a suppressor to be fitted. Shoot-bolt systems for instance
tend to require at least 1.5A peak current and this will require the use of an isolation relay
and a separate power supply for the lock.
Exit Button Input
The exit button is used to unlock the door for the pre-set lock operating time. The input is
designed only for use with a normally open push button. ‘Exit +’ is the input and ‘Exit -’ is
internally connected to 0V.
The ‘Exit +’ input can also be used for connection to other equipment to open the door as
shown in Diagram K –Combined Connections bellfree With Lock.
Door Open Switch
The door open switch is used to provide an indication at the apartment station that the
door has been left open. This switch can have closed contacts when the door is closed or
open contacts when the door is closed, the choice being made in Panel Programming.
The default of ‘contacts open when door closed’ must be selected when this feature is not
required.
Time Clock Sharing
In a large system a single time clock can be shared between distributed equipment areas
by borrowing one of the ‘comm -’ wires in the interconnecting Cat5 to use as the shared
“Time clock common”. See the detailed diagram on page 41.

tabellet Apartment Station 2-72 Way System
PD-307 Issue 2 Installation and Operating Manual Page 19 of 48
Commissioning
The major components of the bellfree Video system are fitted with high quality pluggable
screw terminal blocks. This enables all the connections to the system to be fully
completed, whilst easily isolating individual pieces of equipment during testing and
commissioning.
When powering up for the first time, it is highly recommended that only the most basic
system be connected. i.e. 1 tabellet apartment station, 1 door controller and panel, and 1
video controller; the remaining equipment can be isolated by unplugging terminal blocks.
NB: Ensure the 1 door and video controller remain interconnected and that the ‘end of
line’ controller is terminated temporarily using the jumpers (see page 23).
Proceed to test the system by calling the apartment station from the door panel in the
usual way. Any problems can be resolved by rechecking wiring and connections, assisted
by the various suggestions and tests in the section “Troubleshooting”. Once the basic
system is fully functioning, continue to reconnect and test the remaining equipment item by
item until completed.

tabellet Apartment Station 2-72 Way System
PD-307 Issue 2 Installation and Operating Manual Page 20 of 48
BFD8/72 Door Controller Switch Settings
Talking Time/ Apartment station Active DIP SW1 (1-4)
4
3
2
1
Talk Time
On
On
On
On
15s
On
On
On
Off
20s
On
On
Off
On
30s
On
On
Off
Off
45s
On
Off
On
On
60s
On
Off
On
Off
75s
On
Off
Off
On
90s
On
Off
Off
Off
120s
Off
On
On
On
150s
Off
On
On
Off
180s
Other settings
60s
Off
Off
Off
Off
60s*
*Default setting
Ringing Time/Call Time and Ring Effect DIP SW1 (5-8)
8
7
6
5
Call Time
Ring Cadence or Sound Effect
On
On
On
On
5s
1 in 3 –1 ring every 3 seconds
On
On
On
Off
8s
1 in 3 –1 ring every 3 seconds
On
On
Off
On
10s
1 in 3 –1 ring every 3 seconds
On
On
Off
Off
15s
1 in 3 –1 ring every 3 seconds
On
Off
On
On
20s
1 in 3 –1 ring every 3 seconds
On
Off
On
Off
30s
1 in 3 –1 ring every 3 seconds
On
Off
Off
On
40s
1 in 3 –1 ring every 3 seconds
On
Off
Off
Off
45s
1 in 3 –1 ring every 3 seconds
Off
On
On
On
50s
1 in 3 –1 ring every 3 seconds
Off
On
On
Off
60s
1 in 3 –1 ring every 3 seconds
Off
On
Off
On
30s
1 in 3 (Reserved For future use)
Off
On
Off
Off
30s
1 in 3 (Reserved For future use)
Off
Off
On
On
30s
2 in 15 –2 rings, 15S silence, repeat
Off
Off
On
Off
30s
1 in 15 –1 ring, 15S silence, repeat
Off
Off
Off
On
30s
1 in 5 –1 ring every 5 seconds
Off
Off
Off
Off
30s*
1 in 3* –1 ring every 3 seconds
*Default setting
SW1
SW2
SW3
(QWERGHJK)
(ASDFGHJK)
(ASDFGHJK)
OFF ↔ ON
SW1
SW2
SW3
(ASDFTYUI)
(ASDFGHJK)
(ASDFGHJK)
OFF ↔ ON