Videx SENTRY Technical Manual

TECHNICAL MANUAL
EDITION 1.6

SENTRY

TECHNICAL MANUAL

PAGE 1 of 29 SENTRY TECHNICAL MANUAL VER1.6

CONTENTS

PAGE

Manual Introduction

2

System Introduction

2

System Components

2 – 12

System Operation

13

Vandal Resistant Panel layout and sizes

14

Installation

15

Block Diagrams

16

Cable Size tables

17

Testing the installation

18

Telephone Connections Compatibility Chart

19

Accessories Connection Guide

20

Standard wiring diagram

21

Isolated system wiring diagram

22

800 Series door panel wiring diagram

23

Video system wiring diagram

24 – 25

Apartment station system wiring diagram

26

Art136 amplifier wiring diagram

27

Trouble Shooting Guide

28 - 29

PAGE 2 of 29 SENTRY TECHNICAL MANUAL VER1.6

MANUAL INTRODUCTION

The information is this manual is intended as an installation and commissioning guide for
the Sentry system. This manual should be read carefully before the installation
commences. Any damage caused to the equipment due to faulty installations where the
information in this manual has not been followed is not the responsibility of Videx Security
Ltd.

VIDEX run free training courses for engineers who have not installed the sentry system
before. Technical help is also available on 0191 224 3174 during office hours or via e-mail
[e-mail].

SYSTEM INTRODUCTION

The Sentry system is primarily a single entrance audio or audio/video system which is
capable of being expanded to multiple entrances with additional equipment. The system
has no limit on the number of apartments for which it can control although we suggest
using this system on small to medium sized installation of no more than 20 apartments.
The system benefits from advanced features such as full privacy of speech, fully privacy of
lock release, adjustable calling time, speech time and door open time and the facilities for
both push to exit button and tradesman button. There are many optional extras available
for the system including full line card isolation, door monitoring and access control (coded,
proximity, Bio). A range of options are also available for the apartments including a range
of telephones with varying facilities, videophones, extension sounders and strobes.

SYSTEM COMPONENTS

A standard audio system will comprise of a door panel, control cabinet and audio
telephones. A standard video system will comprise of a door panel, control cabinet, video
splitters and videophones. The individual parts are described below.

DOOR PANELS

Door panels from the 800 Series (Using the 837 amplifier), 4000 Series (Using the 4837 or
4832 amplifier) and vandal resistant (Using the 437 or 537 amplifier) range can be used on
the Sentry system.

Art.837 Amplifier connections

Connection Function

2 Transmit speech to apartment
~ 13Vac input for name plate lights
3 Switched +12Vdc input
1 Receive speech from apartment
4 0V (Ground)
~ 0V input for name plate lights

X Not Used
P2 Push button 2 output
P1 Push button 1 output

C Button common connection

Art.437 or 537 Amplifier + Connector PCB

Connection Function

1 Receive speech from apartment
2 Transmit speech to apartment
3 Switched +12Vdc input
4 0V (Ground)

CB Button common connection

1 Push button 1 output

2 Push button 2 output
…
10 Push button 10 output

PAGE 3 of 29 SENTRY TECHNICAL MANUAL VER1.6

ART.136 AMPLIFIER (Software version 136-12 or later)

Connection Function

1 Receive speech from apartment
2 Transmit speech to apartment

+ (3) +12Vdc input (Amplifier connection 3 on the Sentry PCB)

- (4) 0V (Ground) (Amplifier connection 4 on the Sentry PCB)
5 Link to terminal – when used on Sentry system

T Electronic call tone output to common side of call buttons (NOT USED ON SENTRY SYSTEM)

- Link to terminal 5 when used on Sentry system

PTE push to exit button to trigger door release relay (NOT USED ON SENTRY SYSTEM)

C Common connection of dry contact relay (NOT USED ON SENTRY SYSTEM)

NC Normally closed connection of dry contact relay (NOT USED ON SENTRY SYSTEM)

NO Normally open connection of dry contact relay (NOT USED ON SENTRY SYSTEM)

D+ External link to door open (+12V side) LED.

D- External link to door open (0V side) LED.

BSY Busy signal (NOT USED ON SENTRY SYSTEM)

SL Switched 0V output to switch on video PSU. (NOT USED ON SENTRY SYSTEM)

F1 Switched 0V output to switch on camera. (NOT USED ON SENTRY SYSTEM)

IMPORTANT NOTE (Art.136 Amplifier only): A 680R resistor needs to be fitted across terminals 1 & 3 of the
amplifier and a wire link across terminals 5 & - of the amplifier.

Speech volume adjustments are carried out at the door panel using a small trimmer driver.

Please see block diagram on page 16 for cable requirements

Art.4837 Amplifier connection

Connection Function

C Buttons common connection
C1 Calltone out (Not used on Sentry)
P1 Push button 1 output
P2 Push button 2 output
S1 Common relay (Not used on Sentry)

S Normally Open Relay (Not used)

RL 0V relay trigger (Not used on Sentry)

- 0V Ground
1 Receive speech from apartment
+ Switched +12Vdc input
2 Transmit speech to apartment

P3 Push button 3 output
P4 Push button 4 output

Art.4832 Amplifier connection

Connection Function

I Camera power input (14-20Vdc)

F1 Camera 0V

M/V2 Video Screen or Video sync+

V/V1 Video centre core or Video sync-

C Buttons common connection

C1 Calltone out (Not used on Sentry)

P1 Push button 1 output
S1 Common relay (Not used on Sentry

S Normally Open Relay (Not used)

RL 0V relay trigger (Not used on Sentry)

- 0V Ground

1 Receive speech from apartment

+ Switched +12Vdc input

2 Transmit speech to apartment

P3 Push button 3 output

Adjustment for

speech volume level

at the door station

Adjustment for

speech volume at the

apartment

1 2 3 4

ON

H

L

Position H High volume reassurance tones
Position L Low Volume reassurance tones
No Jumper No reassurance tones

When using the Art.136
amplifier with the Sentry
system, all dip-switches
must be off

Dip-switches and
jumper setting
on Art.136
amplifier

This jumper will not adjust the reassurance tone on
the Sentry system

680R

PAGE 4 of 29 SENTRY TECHNICAL MANUAL VER1.6

CONTROL CABINET

The control cabinet consists of three primary components plus optional extra components
such as line card isolation, door monitoring etc. The three primary components are the
Sentry control PCB, power supply unit and time clock.

SENTRY PCB

The Sentry PCB includes three jumpers to select calling time, speech time and door open
time:-

JP3 LINK FITTED LINK REMOVED

CALL TONE LENGTH

L1 15 Seconds (3 rings) 25 Seconds (6 Rings)

SPEAK TIME

L2 30 Seconds 90 Seconds

LOCK OPEN TIME

L3 5 Seconds 10 Seconds

POWER SUPPLY

A control cabinet for an audio system will contain a 13.8Vdc PSU with battery back up
facility. The standard power supply is rated at 1 Amp. (Care should be taken to calculate
the current consumption of the lock release as it may be necessary to upgrade this power
supply to either a 2 Amp or even a 3 Amp). Video control cabinets will have an additional
PSU rated at 20Vdc 1 Amp surge or 800mA continuous. This additional power supply is
described below and is used to power the videophones and the camera.

CN1

CN2

CN3

CONNECTIONS

CON Terminal Function

CN1

+12 12Vdc Input power
GND 0V (Ground)
NO Normally open relay
CO Common relay
NC Normally closed relay
CB Call button common
4 0V to amplifier
3 Switched +12 to amp
1 Transmit speech to amp
2 Receive speech from amp

CN2

ENG-LO Engaged signal
ENG-LA Busy lamp connection
FIREMAN Fireman switch input
SWITCH Triggers relay for set time
TRADE Trade button input
BUTTON
TIME Time clock input
CLOCK

CN3

+12 +12V out to telephones
7 0V to telephones
4 Call tone output
2 Transmit speech to phone
1 Receive speech from phone
5 Lock release trigger

1

2

3

Call tone line protection fuse

Call in progress LED

JP3 Timer jumpers for call time,
speech time and relay time

1

2

3

315mA

PAGE 5 of 29 SENTRY TECHNICAL MANUAL VER1.6

Art. 893N

Art.701

OPTIONAL ISOLATION PCB

20Vdc 800mA continuous 1A surge PSU. This power supply only
has an output when either a 0V is applied to –C or when a voltage
is applied to +C. At all other times the + output is switched off.

Connection Function

230V~ 0 Mains voltage input
+ Switched 20Vdc output (Triggered by –C or +C)

- 0V

-C 0V trigger input (From 4V to 0V)
+C + volts trigger input (From 8V up to 30V)
D+ +20Vdc output via diode

BST/GMT digital time clock. This time clock operates from a 12Vac
or dc power supply. The output is a dry contact relay. When used
with the Sentry control system the relay is used to short the time
clock inputs on the sentry PCB which will in turn enable the trade
button input to accept a short from a trade button. This will then
energise the lock relay on the Sentry PCB.

Connection Function

+ 12Vac or dc voltage input

- 0V
TR Not used with Sentry system
C Common connection on relay
NO Normally open connection on relay
NC Normally closed connection on relay
For more information see time clock instruction sheet

An isolation card will prevent a fault in a single
apartment affecting the rest of the system. The
isolation card has four channels (One card required
for every four apartments) and can be mounted in
the main control cabinet or in riser boxes.

Operation:

The isolation card will trigger an output when it
receives a positive voltage on either A, B, C or D.
The output will stay triggered as long as the SW+
terminal has 12 volts present. Once the 12V is
removed from the SW+ terminal the output will
switch back into isolated mode. The inputs A-D are
from the call buttons at the door panel and the SW+
is switched by the Sentry PCB (Terminal 3 of the
amp). Four LED’s on the PCB indicate when an
output is live.

2

1

3

3

5 5 5

5

4

4

4

4

Power and phone commons from Sentry
PCB

Select lines from call buttons

Call tone & +12V to phones fuse

Phone connections to apartment

Output live LED

1

2

3

4

5

PAGE 6 of 29 SENTRY TECHNICAL MANUAL VER1.6

INTERCOM 3 PCB

NOTE

In the event of the speech needing to be adjusted to eliminate feedback or to increase the
speech volume to an acceptable level the following two options are available :­Option 1. The speech can be adjusted at the door panel amplifier by adjusting the two
volume controls (One for transmitting to the apartment and one for receiving from the
apartment).
Option 2. There is also a volume POT [VR1] on the intercom 3 PCB. This will adjust both
directions of speech at the same time and is only intended for situations when the volume
cannot be adjusted sufficiently at the door panel. (Note: This will also adjust the call tone
volume both at the door and at the apartment station).

1

2

3

CN1 Connections in from Sentry PCB

CN2 Connections out to apartment station

Volume adjust

1

2

3

The intercom 3 apartment station
interface PCB is required whenever
the 500, 500M or 500ST apartment
station are used. This PCB converts
the duplex speech into simplex
speech and controls the switching of
the apartment station

CON Terminal Function

CN1

+12V +12Vdc In
Gnd Ground
3 Switched 12Vdc
4 Calltone
2 Receive Speech
1 Transmit Speech
5 Lock Trigger

CN2

1 Lock button
6 Talk button
2 Switched 12Vdc
3 Speaker
5 Ground
+12V +12Vdc Out

PAGE 7 of 29 SENTRY TECHNICAL MANUAL VER1.6

AUDIO TELEPHONES

Art.3121

Art.3123

The Art.3121 includes a three position call tone volume control, lock
release push button and spare dry contact push to make button for
other services.

CONNECTIONS:­ Function

1 Transmit speech to the door panel
2 Receive speech from the door panel
T Call tone in from Sentry PCB
P Switch 0V lock trigger command

- 0V

C Select line (Switches on telephone)

8 Dry contact switch
9

The Art.3123 includes a three position call tone volume control, lock
release push button and spare dry contact push to make button for
other services. Additionally it includes a slide mute switch with LED to
turn the phone off when the tenant does not want to be disturbed.

CONNECTIONS:­ Function

1 Transmit speech to the door panel

2 Receive speech from the door panel
T Call tone in from Sentry PCB
P Switch 0V lock trigger command

- Not Used
C Select line (Switches on telephone)
8 Dry contact switch
9

SWITCH PCB

- 0V

+/~ +12V for mute LED

PAGE 8 of 29 SENTRY TECHNICAL MANUAL VER1.6

Art.3125

Art.3126

The Art.3125 includes a three position call tone volume control and
large lock release push button. Additionally it includes a push on push
off mute switch with status LED and a door open LED.

CONNECTIONS:­ Function

1 Transmit speech to the door panel
2 Receive speech from the door panel
T Call tone in from Sentry PCB
P Switch 0V lock trigger command

- 0V
C Select line (Switches on telephone)
D Switched +12 in for door open LED

+12 +12V for mute circuit

The Art.3126 includes a three position call tone volume control and
large lock release push button. Additionally it includes a push on push
off timed mute switch with status LED and a door open LED.

CONNECTIONS:­ Function

1 Transmit speech to the door panel
2 Receive speech from the door panel
T Call tone in from Sentry PCB
P Switch 0V lock trigger command

- 0V
C Select line (Switches on telephone)
D Switched +12 in for door open LED

+12 +12V for mute circuit

JUMPER SETTINGS:­ FIVE SETTINGS ARE AVAILABLE FOR THE PRIVACY TIME

Jumper in position A 15 Minutes
Jumper in position B 30 Minutes
Jumper in position C 2 Hours
Jumper in position D 4 Hours
Jumper in position E 8 Hours

SET THE PRIVACY LED TO FLASH OR ON CONSTANT

Jumper in position FL Flash the privacy LED
Jumper in position FX LED on constant

PAGE 9 of 29 SENTRY TECHNICAL MANUAL VER1.6

VIDEOPHONES

901D

Art.3313

The Art.901D (901D/C for colour) includes a lock release
push button and a dry contact push to make spare push
button for other services.

CONNECTIONS:­ Function

1 Transmit speech to the door panel
2 Receive speech from the door panel
T Call tone in from Sentry PCB
P Switch 0V lock trigger command

- 0V

C Select line (Switches on telephone)

V Centre core of coax
M Screen of coax
M 0V

+12 +12V out to power video splitter Art.894
+20 Switched +20V in to power videophone

The Art.3313 (3413 for colour) includes a lock release push button and two dry contact push
to make spare push buttons for other services. An Art.3980 back plate is required with this
videophone.

CONNECTIONS:­ Function

1 +12V out to power video splitter
2 Not used
3 Spare button
4 +20V power input
5 Door release command
6 Transmit speech to door panel
7 Receive speech from door panel
8 0V (Ground)

9 Not used
10 Local call tone input
11 Coax centre core or non-coax sync­12 Coax Screen or non-coax Sync+
13 Switched +12 for door open LED
14 Select input to switch on videophone
15 Call tone input from Sentry PCB
16 Common of spare buttons
17 Spare button
18 +12V to power videophone privacy

PAGE 10 of 29 SENTRY TECHNICAL MANUAL VER1.6

APARTMENT STATIONS

500

The model 500 apartment station includes a push to talk button, door release button and
slide mute switch. The Intercom 3 PCB must be used when using this apartment station.

DIP SWITCH SETTINGS
8 Way dip switch (Switches 1 – 5)

Mute Duration time

Time 1 2 3 4 5

15 Minutes ON OFF OFF OFF OFF
30 Minutes OFF ON OFF OFF OFF
2 Hours OFF OFF ON OFF OFF
4 Hours OFF OFF OFF ON OFF
8 Hours OFF OFF OFF OFF ON

3 Way Dip Switch
VIDEO MODE continued
Switch

1 2 3

Coax OFF OFF OFF
Non-Coax ON ON ON

8 Way dip switch (Switch 6)
Mute LED
Switch

6

Fixed OFF
Flashing ON

8 Way dip switch (Switches 7 & 8)
°° Button Operation
Switch

7 8

Camera recall ON OFF
Dry contact OFF ON

4 Way Dip Switch (Switches 1 & 2)
S Button Operation
Switch

1 2

Camera recall ON OFF
Dry contact OFF ON

4 Way Dip Switch (Switches 3 & 4)
VIDEO MODE
Switch

3 4

Coax ON ON
Non-Coax OFF OFF

Connections:

Function

4 Select line from call button
2 Switched +12V to activate
6 Talk Button
1 Lock release button
3 Audio
5 Ground

PAGE 11 of 29 SENTRY TECHNICAL MANUAL VER1.6

500M

The model 500M apartment station includes a push to talk button, door release button and
push mute switch with LED and door open LED. The Intercom 3 PCB must be used when
using this apartment station.

500ST

The model 500ST apartment station includes a push to talk button, door release button
and timed push mute switch with LED and a door open LED. The Intercom 3 PCB must be
used when using this apartment station.

Connections:

Function

4 Select line from call button
2 Switched +12V to activate
6 Talk Button
1 Lock release button
3 Audio
5 Ground
+ 12Vdc to power mute circuit

D Switch 0V to trigger door open LED

Connections:

Function

4 Select line from call button
2 Switched +12V to activate
6 Talk Button
1 Lock release button
3 Audio
5 Ground
+ 12Vdc to power mute circuit

D Switch 0V to trigger door open LED

SW4

PRIVACY LED FIXED OR FLASHING

FIXED

SW4

FLASHING

SW4

PRIVACY LED FIXED OR FLASHING

FIXED

SW4

FLASHING

PRIVACY TIMES

TIME 15 MIN 2 HOUR 4 HOUR 8 HOUR
SETTING

PAGE 12 of 29 SENTRY TECHNICAL MANUAL VER1.6

ACCESSORIES

Art. 512A

ES/1

Extension sounder for an apartment. This sounder can be wall
mounted and will ring whenever the telephone it is connected to
rings.

Timed strobe unit for the hard of hearing or noisy environments.
The strobe will flash when a call is received and will continue
flashing for an adjustable time period or until the reset button is
pressed.

Connections

4 Call tone input

- 0V (Ground)

Connections

POWER 12V AC or DC input
I/P + trigger
+O/P 12Vdc output
GND Ground
RESET Switched negative reset
NC Normally closed relay connection
CO Common relay connection
NO Normally open relay connection

PAGE 13 of 29 SENTRY TECHNICAL MANUAL VER1.6

SYSTEM OPERATION

CALL: A call will be activated by a visitor pressing the desired flat number on the door

panel. A timed call tone will be heard at the occupants telephone (This will last for the time
set via jumper L1 or until the call is answered). A reassurance call tone will also be heard
at the door panel to indicate the system has been activated. If the occupant does not
answer the telephone, the call will clear down. If the occupant does answer the telephone,
the call tone will stop as soon as the handset is lifted. A two way conversation will then
take place (This will time out after the preset time set via jumper L2). If the occupant does
not want to let the caller into the building, the handset would be placed back on its cradle
and the call will clear down. If the occupier does want to let the caller into the building, the
lock button would be pressed and the door would open for the preset time. The lock button
will not work at any other time (A call must be placed to the handset and handset must be
answered before the lock button will work). Please note: This system has full privacy of
speech which means the speech lines will appear dead until a call is placed to that
apartment

TRADE: The trade button only works when the time clock is active (A short across the
time clock terminals on the Sentry PCB). At this time when the trade button is pressed the
door will open for the preset time (Set via jumper L3).

FIREMAN SWITCH/EXIT BUTTON: The fireman switch will work at all times. When this is
activated the door will open for the preset time (Set via jumper L3).

BUSY LIGHT: A busy light would be used when more than one sentry PCB is being used
to control multiple door systems. The busy light will illuminate when a call is activated at
any door panel. (To use several sentry PCB's together, simply connect the phone
commons from the PCB's together and also connect the engaged lines ENG-LO together).

PAGE 14 of 29 SENTRY TECHNICAL MANUAL VER1.6

VANDAL RESISTANT PANEL LAYOUT AND SIZES

Standard audio panels

Other standard panel sizes:-

1 – 10 button with video [180mm (W) x 256mm (H) x 50mm (D)]
11 – 20 button + video [200mm (W) x 350mm (H) x 50mm (D)]

1 – 10 button + proximity [180mm (W) x 256mm (H) x 50mm (D)]
11 – 20 button + proximity [200mm (W) x 350mm (H) x 50mm (D)]

1 – 10 button + codelock [180mm (W) x 256mm (H) x 50mm (D)]
11 – 20 button + codelock [200mm (W) x 420mm (H) x 50mm (D)]

1 – 10 button + video & proximity [200mm (W) x 350mm (H) x 50mm (D)]
1 – 10 button + video & codelock [200mm (W) x 420mm (H) x 50mm (D)]

1 BUTTON = C
2 BUTTON = B, D (Note: Also available in 125mm 220mm panel style)
3 BUTTON = A, C, E
4 BUTTON = B, D, G, I
5 BUTTON = A, C, E, G, I
6 BUTTON = A, C, E, F, H, J
7 BUTTON = A, B, C, D, E, G, I
8 BUTTON = A, B, C, D, E, G, H, I
9 BUTTON = A, B, C, D, E, F, G, I, J
10 BUTTON = A, B, C, D, E, F, G, H, I, J
11 BUTTON = A, C, E, F, H, J, K, M, O, Q, S
12 BUTTON = A, C, E, F, H, J, K, M, O, P, R, T
13 BUTTON = A, C, E, F, H, J, K, M, O, P, Q, S, T
14 BUTTON = A, C, E, F, H, J, K, M, O, P, Q, R, S, T
15 BUTTON = A, B, C, D, E, F, G, H, I, J, K, L, M, N, O
16 BUTTON = A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, R
17 BUTTON = A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, Q, S
18 BUTTON = A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, R, T
19 BUTTON = A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, S, T
20 BUTTON = A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T

PAGE 15 of 29 SENTRY TECHNICAL MANUAL VER1.6

INSTALLATION

The wiring diagrams towards the back of this manual should be followed carefully. Heavy
duty conductors on wiring diagrams are shown heavily outlined, These wires should be
doubled up.

- Check that all components are free from damage before installing (Do not proceed with
installation in the event of damage).

- Keep all packaging away from children.

- Do not obstruct the ventilation openings or slots on any of the devices.

- All connections to mains voltages must be made to the current national standards (IEE
Wiring regulations)

- Install an appropriate fused spur or isolation switch to isolate the mains.

- Isolate the mains before carrying out any maintenance work on the system.

- All intercom and access control cables must be routed separately from the mains.

Lock release protection : A diode must be fitted across the terminals on the lock release
to suppress back EMF voltages. The diagram below shows the polarity of the diode when
fitted to the release.

+

-

1N4002

+

-

12V DC

LOCK RELEASE

DIODE

Cable size and type : When running cables for any intercom system, these cables must
be installed separately from the mains cables. All multi pair cables should be to CW1308
specification. (0.5mm twisted pair telephone cable). Max resistance = 10 Ohm.
Lock release wires should be doubled up. Max resistance = 3 Ohm
The cables sizes above can be used for distances up to 100m. On distances above 100m
the cable sizes should be increased to keep the overall resistance of the cable below the
RESISTANCES indicated above.

PAGE 16 of 29 SENTRY TECHNICAL MANUAL VER1.6

AUDIO SYSTEM BLOCK DIAGRAM

Note: Additional cores will be required for auxiliary devices such as push to exit buttons,
fireman switches, proximity access control etc.

VIDEO SYSTEM BLOCK DIAGRAM

Note: Additional cores may be required for auxiliary items such as push to exit buttons,
fireman switch proximity access control etc..
The block diagram above shows all videophones coming back to one point with all the
video distributors at that point. It is also possible to spread the video distributors around
the building (Please see wiring diagrams for more information).

PAGE 17 of 29 SENTRY TECHNICAL MANUAL VER1.6

Connections from the door panel to the control cabinet.

(NOTE: Additional connections may be needed for fireman switches keypads, proximity etc)

Connections 50m 100m 200m 300m 400m

Amp 1

0.25mm²

0.35mm² 0.5mm²

0.75mm²

1.0mm²

Amp 2

0.25mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²

Amp 3

0.25mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²

Amp 4

0.25mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²

CB

0.25mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²

Selects 1-n

0.25mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²

Trade

0.25mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²

Trade

0.25mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²

Lock

0.5mm² 0.75mm² 1.5mm² 2.0mm² 2.5mm²

Lock

0.5mm² 0.75mm² 1.5mm² 2.0mm² 2.5mm²

V*

Standard quality Medium quality Good quality Good quality High quality

M*

75Ω Coax cable 75Ω Coax cable 75Ω Coax cable 75Ω Coax cable 75Ω Coax cable

I (+20)*

0.35mm² 0.5mm² 1.0mm² 1.5mm² 2.0mm²

F1 (Vid 0V)*

0.35mm² 0.5mm² 0.75mm² 1.0mm² 1.5mm²

SB (+12V)*

0.25mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²

* These lines are only required on video systems.
V is the centre core of the coax and M is the screen.
For best performance, keep the distance between the door panel and the control cabinet to a minimum.

Connections from the control cabinet to the apartment.

Connections

50m 100m 200m 300m 400m

1

0.35mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²

2

0.35mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²

-

0.35mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²

4(T)

0.35mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²

5(P)

0.35mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²

6(C)

0.35mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²

D*

0.35mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²

+12*

0.35mm²

0.35mm² 0.5mm²

0.75mm²

1.0mm²

V(11)**

Standard quality Medium quality Good quality Good quality High quality

M(12)**

75Ω Coax cable 75Ω Coax cable 75Ω Coax cable 75Ω Coax cable 75Ω Coax cable

+20**

0.35mm² 0.5mm² 1.0mm² 1.5mm² 2.0mm²

Vid Gnd**

0.35mm² 0.5mm² 1.0mm² 1.5mm² 2.0mm²

+12OUT**

0.35mm² 0.5mm² N/A N/A N/A

T(16)**

0.35mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²

1T(17)**

0.35mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²

2T(18)**

0.35mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²

* Only required on phones with privacy and/or door monitoring.
** Only required on videophones

V is the centre core of the coax and M is the screen.

PAGE 18 of 29 SENTRY TECHNICAL MANUAL VER1.6

Safety Note : The earth wire from the cabinet lid should be connected to the cabinet base

and then to the earth connection in the building. This should be checked for continuity.

An earth connection should also be fitted to the door panel stainless steel facia using one
of the studs provided.

TESTING THE INSTALLATION

- Check all the connections have been made correctly and then power up the system.

- Call all the apartments in turn. Check for call tone to the apartment, speech in both
directions and lock release.

- If the volume of speech needs to be adjusted, this can be done by adjusting the presets
on the rear of the amplifier at the door panel as shown on page 3.

- If the call tone volume needs adjusting this can be done at each handset (Three
position slid switch on the telephone).

- Check the fireman switch (If fitted).

- Set the time clock on/off times (Use the instruction supplied with the time clock). Check
the trade button only works when the time clock is on.

PAGE 19 of 29 SENTRY TECHNICAL MANUAL VER1.6

TELEPHONE CONNECTIONS COMPATIBILITY CHART

AUDIO TELEPHONES

MODEL Transmit

Speech

Receive

Speech

Call

Tone

Lock

Release

Ground Trigger +12V Door

Monitor

3121

1 2 T P - C N/A N/A

3123

1 2 T P - C + N/A

3125

1 2 T P - C +12 D

3126

1 2 T P - C +12 D

924S

1 2 T P - C N/A N/A

924MSL

1 2 T P - C + N/A

940MS2L

1 2 T P - C +12 D

940ST

1 2 T P - C +12 D

524S

1 2 4H or 4L 5 7 6 N/A N/A

524MS

1 2 4H or 4L 5 7M 6 N/A N/A

524MSL

1 2 4H or 4L 5 7M 6 + N/A

526ST

1 2 T P - C + D

500MM

1A 2A T/4 NO/P GND C/6 +12 N/A

VIDEOPHONES

MODEL TX

SPEECH

RX

SPEECH

CALL
TONE

LOCK

RELEASE

AUDIO

GND

Trig VIDEO

GND

+ IN

VIDEO

VID
SIG

+12
IN

+12
Out

Door
Mon.

901D

1 2 T P - C M +20 V&M N/A +12 N/A

3313

6 7 15 5 8 14 8 4 11&12 18 1 13

APARTMENT STATIONS

MODEL SELECT SWITCHED

12V

TALK

BUTTON

LOCK

BUTTON

AUDIO GND +12V

SUPPLY

DOOR

MONITOR

500

4 2 6 1 3 5 N/A N/A

500M

4 2 6 1 3 5 + D

500ST

4 2 6 1 3 5 + D

PAGE 20 of 29 SENTRY TECHNICAL MANUAL VER1.6

ACCESSORIES CONNECTION GUIDE

PAGE 21 of 29 SENTRY TECHNICAL MANUAL VER1.6

WIRING DIAGRAM

This diagram shows a single entrance vandal resistant door panel connected to multiple
apartments. The lock release shown is fail safe and a break glass is connected in line.
We recommend bringing all telephones back to one point (i.e. control cabinet) on this type
of installation.

PAGE 22 of 29 SENTRY TECHNICAL MANUAL VER1.6

WIRING DIAGRAM

This diagram shows a single entrance vandal resistant door panel connected to multiple
apartments with full isolation to prevent a single apartment compromising the whole
system.
The lock release shown is fail secure. The SP35 door monitoring PCB is also shown along
with a set of normally closed door contacts. This will be used to activate the door open
LED on the telephone handsets.
The isolation cards each support four apartments. All the isolation cards can be mounted
together in one location or separately on each landing.

PAGE 23 of 29 SENTRY TECHNICAL MANUAL VER1.6

WIRING DIAGRAM

This diagram shows a single entrance 800 series modular door panel connected to
multiple apartments.

PAGE 24 of 29 SENTRY TECHNICAL MANUAL VER1.6

`

WIRING DIAGRAM

This diagram shows a single entrance video system with vandal resistant door panel
connected to multiple apartments.

COAX

Coax
V – Video signal
M - Screen

PAGE 25 of 29 SENTRY TECHNICAL MANUAL VER1.6

WIRING DIAGRAM

COAX

COAX

PAGE 26 of 29 SENTRY TECHNICAL MANUAL VER1.6

WIRING DIAGRAM

This diagram shows a single entrance apartment station system.

PAGE 27 of 29 SENTRY TECHNICAL MANUAL VER1.6

WIRING DIAGRAM

This diagram shows the ART.136 amplifier used in the door panel. (Remember to fit the
680R resistor across terminals 1&3 of the Sentry PCB

PAGE 28 of 29 SENTRY TECHNICAL MANUAL VER1.6

TROUBLE SHOOTING

When trouble shooting a large system, it will be easier to break the system down to a
manageable size. The simplest way to do this is to remove all but one handset. Doing this,
you can confirm the door panel and control cabinet are free from faults. Once this has
been confirmed you can reconnect the handsets in small sets (Floor by floor), testing after
each set to see if the fault has re-appeared.

SYMPTOM TEST

No speech from door panel

Check terminal 2 on the amplifier for continuity back
to the sentry PCB
Check terminal 2 on the handset for continuity back
to the sentry PCB
During a call but before lifting the handset, check the
voltage to the telephone on terminal 2 is 12Vdc.
Trace this voltage from amplifier terminal 2 to the
telephone.
Check the voltage drops to approx. 1Vdc during a
call after the handset is lifted. (If not try another
telephone)
If all else fails try another amplifier at the door station

No speech from handset

Check terminal 1 on the amplifier for continuity back
to the sentry PCB
Check terminal 1 on the handset for continuity back
to the sentry PCB
During a call but before lifting the handset, check the
voltage to the telephone on terminal 1 is 12Vdc.
Trace this voltage from amplifier terminal 1 to the
telephone.
Check the voltage drops to approx. 4Vdc during a
call after the handset is lifted. (If not try another
telephone)
If all else fails try another amplifier at the door station

Handset beeps only once when called

Check the voltage across 3&4 on the door panel
amplifier. During a call this should be 12Vdc
(Supplied from the Sentry PCB)

Handset only rings for 1 second

Check terminal 1 going to the handset for continutity
back to terminal 1 on the door station via the Sentry
PCB.

Phone does not stop ring when handset is
lifted.

Check terminal 2 on handset for continuity back to
the Sentry PCB.

Lock will not operate from telephone

Check terminal P on the telephone for continuity
back to the Sentry PCB.
Check the voltage on terminal 5 of the handset. 5Vdc
in standby dropping to 0V when the release button is
pressed during a call.

Lock operates as soon as the handset is
lifted.

Check for shorts across terminal 5 of the telephones
and other cables.

Check terminal 5 voltage. Should be 5Vdc when the
button is not being pressed (5V is generated by the
Sentry PCB).

PAGE 29 of 29 SENTRY TECHNICAL MANUAL VER1.6

Nothing happens when any call button is
pressed

Check power to the Sentry PCB.

Check the CB line to the door panel. Should be
12Vdc.

No call tone to telephone but speech and
lock ok when handset is lifted

Check terminal T on the telephone for continuity
back to the Sentry PCB

Check the call tone fuse on the Sentry PCB. (If it
repeatedly blows then there is a short on the T line to
the telephones)

Hum on the speech lines

Ensure all intercom cables do not run close to higher
voltage cables
Try another amplifier at the door panel.

Northern Office

Videx Security Ltd
Unit 4-7 Chillingham Ind. Est.
Newcastle Upon Tyne
NE6 2XX
TEL [phone]
FAX [phone]

Southern Office

1 Osprey
Trinity Park
Trinity Way
London
E4 8TD
FAX [phone]

TECHNICAL SUPPORT

[e-mail]

TEL [phone]
FAX [phone]
http://www.videx-security.com