Videx VK4KC, VK4K, 6256 Installation Handbook
66250457-EN
V 3.4
31/08/16
VIDEOKIT
VK4K/6256 SERIES
“6 Wire” bus one way, two way videokit
Installation handbook
VK4K
VK4KC
6256
We recommend
This equipment is installed by a
Competent Electrician, Security or
Communications Engineer
.
English
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VK4K/6256 Series “6 wire Bus” videokit
VK4K/6256 Series - Installation handbook
Index
Introduction
The VK4K Series is a new range of videokits that use the 4000 Series external door station and the Art.6256 Series videophone.
The camera / audio unit is the size of a single 4000 Series module and is available in either ush (VK4K) or surface (VK4K-S) mounting
versions.
As a result of using microprocessor technology in the door panel and videophone, a number of additional features have been added to enhance the operation of the videokits and give greater feedback to the visitor and user.
• Disability friendly, visual and acoustic signals from the door panel to inform the visitor of call status (call made, ringing, speak,
door open).
• Programmable door open and conversation time.
• Expandable to 4 entrance panels (requires an additional relay Art.506N for each entrance panel).
• Connections for a push to exit button.
• Two methods of operating the electric lock:- 1) Dry contact relay, 2) capacitor discharge 12Vdc output.
• Facility for the connection of a codelock Art.4800M, display module Art.4820, stand-alone proximity reader Art.4850 or standalone biometric reader Art.4821 etc.
• Programmable number of call tone rings from 2 to a maximum of 8.
• Input for local door bell push button.
• Programmable timed privacy function from 15 minutes to a maximum of 8 hours.
• Door open status LED (additional wire required from the door to the videophone)
• Up to 4 videophones can be connected in parallel, all with intercommunication facility.
• Videophones can have a maximum of two additional audio telephone handsets connected in parallel.
• Camera recall on all systems, with selective recall on systems with multiple entrances.
• Door panel camera can be adjusted horizontally and vertically (10 degrees).
Introduction .................................................................................................................................................................................... 2
System components and available versions ................................................................................................................................ 3
General directions for installation ................................................................................................................................................ 5
Troubleshooting guide .................................................................................................................................................................. 6
Art.4833 Speaker unit ................................................................................................................................................................... 7
Art.4800 - 4800M Digital codelock module ............................................................................................................................... 10
4000 Series surface and ush mounting door station installation .......................................................................................... 13
Art.6256 3.5" colour videophone .............................................................................................................................................. 15
6200 Series Videophone wall mounting instructions ............................................................................................................... 18
Installation diagrams ................................................................................................................................................................... 19
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VK4K/6256 Series “6 wire Bus” videokit
VK4K/6256 Series - Installation handbook
System components and available versions
VK4K/6256
Colour videokit.
49,8
43,8
135,0
160,0
45,0 22,5
15,7
143,0
120,0
45,0
INDOOR
STATION
Videophone
Art.6256
pag. 15
ACCESSORIES
Power supply
Art.850K
pag. 5
OUTDOOR
STATION
Camera unit
Art.4833
pag. 7
Flush
Mounting
Surface
Mounting
Fig. 1 - VK4K/6256 components (measures in mm)
ONE WAY VERSIONS
VK4K-1/6256 - ush mounting
1 Outdoor station composed of:
1 Art.4833-1/C: 1 button camera unit
1 Art.4851: Flush mounting box
1 Colour videophone
Art.6256
1 Power supply
Art.850K
VK4K-1S/6256 - surface mounting
1 Outdoor station composed of:
1 Art.4833-1/C: 1 button camera unit
1 Art.4881: Surface mounting box
1 Colour videophone
Art.6256
1 Power supply
Art.850K
TWO WAY VERSIONS
VK4K-2/6256 - ush mounting
1 Outdoor station composed of:
1 Art.4833-2/C: 2 buttons camera unit
1 Art.4851: Flush mounting box
2 Colour videophones
Art.6256
2 Power supplies
Art.850K
VK4K-2S/6256 - surface mounting
1 Outdoor station composed of:
1 Art.4833-2/C: 2 buttons camera unit
1 Art.4881: Surface mounting box
2 Colour videophones
Art.6256
2 Power supplies
Art.850K
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VK4K/6256 Series “6 wire Bus” videokit
VK4K/6256 Series - Installation handbook
VK4KC/6256 Colour videokit plus a codelock module.
51,0135,0
280,0
45,0 24,0
263,0
INDOOR
STATION
Videophone
Art.6256
pag. 17
ACCESSORIES
Power supply
Art.850K
pag. 5
OUTDOOR
STATION
Flush
Mounting
Surface
Mounting
Camera unit
Art.4833
pag. 7
Codelock
module
Art.4800M
pag. 10
Fig. 2 - VK4KC/6256 components (measures in mm)
ONE WAY VERSIONS
VK4KC-1/6256 - ush mounting
1 Outdoor station composed of:
1 Art.4833-1/C: 1 button camera unit
1 Art.4800M: Codelock module
1 Art.4852: Flush mounting box
1 Colour videophone
Art.6256
1 Power supply
Art.850K
VK4KC-1S/6256 - surface mounting
1 Outdoor station composed of:
1 Art.4833-1/C: 1 button camera unit
1 Art.4800M: Codelock module
1 Art.4882: Surface mounting box
1 Colour videophone
Art.6256
1 Power supply
Art.850K
TWO WAY VERSIONS
VK4KC-2/6256 - ush mounting
1 Outdoor station composed of:
1 Art.4833-2/C: 2 buttons camera unit
1 Art.4800M: Codelock module
1 Art.4852: Flush mounting box
2 Colour videophones
Art.6256
2 Power supplies
Art.850K
VK4KC-2S/6256 - surface mounting
1 Outdoor station composed of:
1 Art.4833-2/C: 2 buttons camera unit
1 Art.4800M: Codelock module
1 Art.4882: Surface mounting box
2 Colour videophones
Art.6256
2 Power supplies
Art.850K
System components and available versions
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VK4K/6256 Series “6 wire Bus” videokit
VK4K/6256 Series - Installation handbook
General directions for installation
CONNECTION TO MAINS
The system must be installed according to national rules in force, in particular we recommend to:
• Connect the system to the mains through an all-pole circuit breaker which shall have contact separation of at least 3mm in each
pole and shall disconnect all poles simultaneously;
• The all-pole circuit breaker shall be placed for easy access and the switch shall remain readily operable.
POWER SUPPLY INSTALLATION
• Remove the terminal side covers by unscrewing the retaining screws;
• Fix the power supply to a DIN bar or directly to the wall using two expansion type screws;
• Switch o the mains using the circuit breaker mentioned above and then make the connections as shown on the installation diagrams;
• Check the connections and secure the wires into the terminals;
• Replace the terminal covers and x them using the relevant screws;
• When all connections are made, restore the mains.
CABLE SIZE
Video connections and Audio connections must be wired in twisted pair: pair the video lines (terminals/signals “V1” and “V2”),
pair the audio lines (terminals /signals “1” and “2”).
+V *
– *
1
V1
V2
2
Power
supply
Videophone
Up to 40mt
2 wires
Ø 1mm
20mt max
Outdoor
station
BROWN
ORANGE
BLUE
GREEN
WHITE/BROWN
WHITE/ORANGE
WHITE/BLUE
WHITE/GREEN
Distance Suggested cables type
Up to
40mt
CAT5/CAT6 FTP/UTP
AWG24
* Couple the two wires to
double the section.
1
V1
V2
+V
–
2
1
V1
V2
+V
–
2
1
V1
V2
+V
–
2
Power
supply
Videophone
Up to 50mt
Outdoor
station
Outdoor
station
Outdoor
station
"+V" and "–"
Ø 0.35mm
"V1" and "V2"
Ø 0.35mm Twisted pair
"1" and "2"
Ø 0.35mm Twisted pair
20mt max
2 wires
Ø 1mm
from 50 to 100mt
"+V" and "–"
Ø 0.75mm
"1" and "2"
Ø 0.5mm Twisted pair
"V1" and "V2"
Ø 0.5mm Twisted pair
from 100 to 200mt
"+V" and "–"
Ø 1.5mm
"V1" and "V2"
Ø 0.75mm Twisted pair
"1" and "2"
Ø 0.75mm Twisted pair
Distance Suggested cables type
Up to
50mt
Belden 9746 or equivalnet
4 pair (8 cores) 0.35mm
AWG22 - 48/Km
From
50 to
100mt
Belden 9690 or equivalnet
3 pair (6 cores) 0.8mm
AWG18 - 19.2/Km
From
100 to
200mt
Belden 9157 or equivalnet
4 pair (8 cores) 0.8mm
AWG18 - 19.2/Km
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VK4K/6256 Series “6 wire Bus” videokit
VK4K/6256 Series - Installation handbook
In case of system failure, try the following preliminary checks:
• Check that the cables are connected as shown in the installation diagram and that the cables are rmly xed into the relevant terminals;
• Check that the mains voltage is available on terminals 230Vac (or 127Vac) and 0 of the power transformer Art.850K;
• Check the 24Vac voltage output of the power transformer Art.850K. If this voltage is not available it could be the 1,6A fuse, in this case
remove the mains voltage, remove possible short-circuits or overload sources then replace the fuse with an equal or equivalent one.
• Check that the voltage between the terminals “+” and “-” of the speaker unit is between 16 and 20Vdc.
If the problem persists try the tests in the following table or contact technical support.
SYMPTOM CAUSE SOLUTION
The door station is not able to call the extension (the bell LED is switched on for 2
seconds):
• Wrong connection between door station and the videophone
• Cable size too small.
• Programmed videophone address incorrect.
• You have changed the videophone address without power down the system.
• Check the 6 common wire connections
especially wire “1” (speech line/data).
• Increase cable size or double up using
two wires for each connection.
• Check videophone address on dip-switches.
• Power down the system then power up
again to detect the new videophone address.
External call works but when answered
the communication fails:
• Cable size too small. • Increase cable size or double up using
two wires for each signal.
During the conversation it is not possible
to open the door:
• Cable size too small. • Increase cable size or double up using
two wires for each signal.
During the conversation it is not possible
to open the door but the key LED on the
door station switches on for the programmed time:
• Incorrect position of J2 jumper.
• Electric lock wires unconnected or in short.
• Wrong electric lock type.
• Check J2 position on the door station.
• Check connection.
• Check that the electric lock type (ac or dc)
is suitable for the J2 position chosen.
Speech only from outside to inside: • Wire “2” broken or in short. • Check connection of wire “2”.
Low volume of speech: • Volume trimmers of door station require
adjustment.
• Adjust the trimmers until the required
volume is reached.
Noise over the speech line during the conversation:
• The 6 common wires are cabled together with 230 or 380Vac power lines.
• The 6 common wires are cabled together with 24Vac videophone power
supply wires.
• Separate the 6 common wires from the
high voltages cables.
• Separate the 6 common wires from the
two 24Vac wires or cable them together
only for a short distance.
Camera recall service does not work: • Camera recall button pressed for a num-
ber of times dierent from the ID of the
door station to be switched on.
• Check the ID (1..4) of the door station to be
recalled and press the camera recall button as many time as the ID value.
Intercommunicating call does not work: • ”Key” button pressed for a number of
times dierent from the videophone address value.
• Check the address of the videophone
you are calling and try again.
The video shown on the monitor is of a bad
quality and the image is distorted or double
• V1,V2 signals unconnected, reversed or
shorted.
• The switches of the two way dip-switch
are not both in ON position.
• V1,V2 of the last Art. 316N (if present)
not closed with 75 Ohm resistor.
• Check that the wires are not broken or
shorted.
• Set both switches to the ON position.
• Use 2x 75 Ohm resistors to connect V1
& V2 to 0V.
Local call does not work: • Wrong connection or call button broken. • Check connection or replace the button.
Troubleshooting guide
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VK4K/6256 Series “6 wire Bus” videokit
VK4K/6256 Series - Installation handbook
Art.4833 Speaker unit
Fig. 1
sw
NONCCPTESLBSV1V221
12Vout
-
+V
J1 J2 J3 J4
1 2 3 4
ON
DATA
H
L
R02A
Fig. 2
DESCRIPTION
Speaker unit module Art.4833 comprising of high quality auto iris lens CCD Day/Night colour camera with infrared illumination LEDs.
LEDS
When illuminated, indicates that it is not possible to make a call because a call or a conversation is in progress (from
the outdoor station from which you are calling or from another outdoor station on systems with multiple entrances).
The LED will be o when the system is in stand-by.
If illuminated, indicates that the call from the outdoor station is in progress. The LED will switch OFF when the call is
answered or after the programmed number of rings.
If illuminated, indicates that it is possible to speak because the call has been answered. The LED will switch OFF at
the end of a conversation (or at the end of the conversation time).
If illuminated, indicates that the door lock has been operated. It will switch OFF at the end of the programmed “door
opening” time.
CONTROLS SPEAKER & MICROPHONE VOLUME
Trimmer to adjust the speaker volume. Rotate clockwise to increase or anticlockwise to decrease.
Trimmer to adjust the microphone volume. Rotate clockwise to increase or anticlockwise to decrease.
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VK4K/6256 Series “6 wire Bus” videokit
VK4K/6256 Series - Installation handbook
Art.4833 Speaker unit
SETTINGS DIPSWITCH & JUMPERS
4 WAY DIPSWITCH
First two switches are used to set the speaker unit address: the speaker unit address is required for camera recall operation on 2
or more entrance systems.
SW
Switches 1,2 Unit Address
OFF OFF 1
ON OFF 2
OFF ON 3
ON ON 4
SW
Switches 3 Conversation Time
OFF 60 seconds
ON 120 seconds
SW
Switch 4 Door opening time (J2 = “L” position)
OFF 2 seconds
ON 6 seconds
JUMPERS J1, J2, J3, J4
H
L
J2 J3 J4J1
J1 Position Call reassurance tone volume
H High
L Low
H
L
J1 J2 J3 J4
J2 Position Door open relay operating mode
H Capacitor discharge
L Dry contacts
H
L
J1 J2 J3 J4
J3 Position Call buttons operating mode (only for Art.4833)
H Each button calls a dierent videophone
L Both buttons call the same videophone (Address 1)
H
L
J1 J2 J3 J4
J4 Position Built-in relays – back EMF protection (MOV)
H NC contact
L NO contact
When the door open relay operating mode is set to “capacitor discharge”*, one terminal of the electric lock must be connected to
ground while the second must be connected to “NO” terminal. The “NO” terminal will supply a temporary voltage when the speaker
unit receives the door open command.
* When “capacitor discharge” operating mode is set, one terminal of the electric lock must be connected to the ground while the
second one must be connected to “NO” terminal. The “NO” terminal will supply a temporary voltage when the speaker unit receives
the door open command (we suggest to use a 12Vac/dc 1A max electric lock). Setting “dry contacts” operating mode, when the
speaker unit receives the door open command, the “NO” terminal will be internally linked to the “C” terminal for the programmed
time (switch 4 of the 4 way dip-switch bank).
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VK4K/6256 Series “6 wire Bus” videokit
VK4K/6256 Series - Installation handbook
Art.4833 Speaker unit
BUILTIN RELAYS BACK EMF PROTECTION
The Art.4833 includes selectable back EMF protection on the relays. The jumpers marked J4 (One jumper for each relay) are used to
select the protection type. When using a fail secure lock with connections C & NO the jumper should be in the NO position. When using
a fail open lock with connections C & NC the jumper should be in the NC position and when using the codelock to trigger a gate controller or another third party controller the jumper should be removed completely (This disables the protection on the relay).
LOCK RELEASE BACK EMF PROTECTION
A varistor must be tted across the terminals on AC lock release
(Fig.1A)
and a diode must be tted across the terminals on a DC
lock release
(Fig.1B) to suppress back EMF voltages. Connect the components to the lock releases as shown in gures.
VARISTOR (MOV)
12V AC
LOCK RELEASE
Fig.1A
DIODE
1N4002
12V DC
LOCK RELEASE
Fig.1B
SIGNALS
+V Power input 16÷20Vdc
Power input ground
12Vout 12Vdc. 0,3A max. output to supply accessiories
1
Speech line input toward the loudspeaker and data signal (about 12V in stand-by, about 5V with a conversation in
progress)
2 Speech line output from the microphone (about 12V in stand-by, about 3V with a conversation in progress)
V1 Balanced video signal sync.–
V2 Balanced video signal sync.+
BS Input/Output busy signal (about 12V in stand-by, about 0V with a call in progress)
SL Active low output to enable the enslavement relay for video signal exchange (active with a call in progress)
PTE Active low input to control directly the door open relay
C Door open relay common contact
Max 24Vdc, 3A when used as dry contacts relayNC Door open relay normally closed contact
NO Door open relay normally open contact
TECHNICAL SPECIFICATION
Power Supply: Supplied by the BUS line, 20Vdc
Power consumption: Stand-by: 70mA
Operating: 250mA
Working Temperature: -10 +50° C
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VK4K/6256 Series “6 wire Bus” videokit
VK4K/6256 Series - Installation handbook
Art.4800M Digital codelock module
CODELOCK UNIT MODULES ART.4800M
The module features 12 stainless steel buttons (Keys 0 - 9,
ENTER and CLEAR), 2 LED’s for progress information during
use and programming and a mirror nish stainless steel front
plate (Standard version). With three integral relays each with
common, normally open and normally closed connections and
two inputs to enable the external triggering of relays one and
two (For example, push to exit button). Key presses are signalled
both acoustically and visually while each button press has a tactile feel. Entering the correct code followed by ENTER will activate the relevant relay. Programming is carried out through
the same keypad following a simple programming menu. The
module can be combined with other 4000 Series modules in an
audio or video intercom system.
‘
MAIN FEATURES
• 3 C, NC, NO relay outputs (24Vac/dc – 5A max);
• 3 Programmable secret codes (one for each relay);
• Each relay can be set to be activated for a specic time (01 to 99 seconds) or to work as latch;
• Two active low inputs to command directly the relay 1 and 2;
• Programming menu guarded by a 4-8 digit programmable engineer’s code;
• Visual and Acoustic signal during operating and programming;
• Keypad illumination LEDs;
GENERAL DIRECTIONS FOR INSTALLATION
In order to achieve the best results from the schematics described it is necessary to install only original VIDEX equipment, strictly
keeping to the items indicated on each schematic and follow these General Directions for Installation:
• The system must be installed according to national rules in force, in any case the running of cables of any intercom unit must be
carried out separately from the mains;
• All multipair cables should be compliant to CW1308 specication (0.5mm twisted pair telephone cable).
• Cables for speech line and service should have a max resistance of 10 Ohm
• Lock release wires should be doubled up (Lock release wires and power supply wires should have a max resistance of 3 Ohm);
• The cable sizes above can be used for distances up to 50m. On distances above 50m the cable sizes should be increased to keep
the overall resistance of the cable below the RESISTANCES indicated above;
• Double check the connections before power up;
• Power up the system then check all functions.
LOCK RELEASE BACK EMF PROTECTION
A varistor must be tted across the terminals on AC lock release
(Fig.1A)
and a diode must be tted across the terminals on a DC
lock release
(Fig.1B) to suppress back EMF voltages. Connect the components to the lock releases as shown in gures.
VARISTOR (MOV)
12V AC
LOCK RELEASE
Fig.1A
DIODE
1N4002
12V DC
LOCK RELEASE
Fig.1B
Fig. 1 - Art.4800M
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