English
Mounting
Application
Multi telephone with colour monitor
for the Siedle Multi system,
integrated buttons for light and
door release, 6 buttons freely
programmable.
Performance features
• Bus connection by means of
plug-in screw terminals
6 pairs of cores
• Call button to the switchboard or
call number 1
• Audio and video privacy device
• Up to 4 devices can be switched in
parallel with the same call number
• Can be used in a system with
system predecessors HT 740-...with
MOM/MOC 711-... or HT 642-...
with MOM/MOC 611-..., i.e. 100%
reverse compatibility in
configuration 1 through to
configuration 3.
Electrical voltage
Mounting, installation and
servicing work on electrical
devices may only be performed
by a suitably qualified
electrician.
• Observe the DIN EN 60065
standard! When establishing the
electronic connection, observe the
requirements of VDE 0805 or
EN 60950.
• Never lay parallel to high-
frequency conducting or highly
interference-contaminated cables.
• Observe the planning and
installation guidelines for Multi
systems.
Electrostatic charging
Electrostatic charging can cause
irreparable damage to the circuit
board as a result of direct contact.
For this reason, direct contact with
the circuit board must be avoided.
Scope of supply
HTV 840-... comprising
• HTV 840-... (base plate and
housing with circuit board), lettering
panel and lettering insert
• Receiver
• Spiral cable
• Dummy card for SD card slot
• Operating instructions for the end
user
• This product information
Installation
Installation can be performed in any
optional form as parallel cabling. We
recommend side circuit or rising
mains systems with storey-by-storey
distribution. The coaxial cables are
installed in star formation from the
storey distribution board.
It is advisable to avoid pure star
or ring-main type systems.
Conductor material
Use twisted-pair, shielded cable
JY(St)Y with 0.8 mm cross-section as
installation material.
Cores 1 and 2 must generally be
doubled in side circuits, cores used
for video supply +Vp and 0V must
also be doubled.
Range
With 0.8 mm core diameter, the
maximum range is 800 or 1000 m.
Power supply
The system telephones are supplied
with 24 V DC (22-28 V).
The supply voltage must never be
permitted to drop below 22 V under
load.
Mounting
The devices are intended as
standard for wall mounting. A 55
mm junction box must always be
provided under the system
telephone cable entry as a terminal
and storage space.
Strip back cable to appr. 80 mm.
1 Recommended mounting height
appr. 1.50 m to centre device.
2 Open the device from the back by
pressing in the locking lever.
3 When mounting directly on the
wall, fasten the base plate using
4 screws, paying attention that the
plate is the right way up (top
marking).
4 When mounting on a switch box,
use the screw openings in the
centre of the device, paying
attention that the plate is the right
way up (top marking).
5 Perform the installation in
accordance with the PS diagram.
Connect the coaxial cable and video
supply on the circuit board.
6 The cores of the installation cable
must be stored inside the free
installation space in the base plate.
7 Insert the coloured plug of the
spiral cable into the socket at the
housing. A distinct click is audible
when the plug is correctly inserted.
8 Insert the other end of the spiral
cable into the receiver until the plug
clicks audibly into place. This
connection can no longer be
detached.
9 Slot the housing into the base
plate and close by applying a light
pressure.
10 Terminal assignment
*
Existing storey call button
**
Existing alarm button/contact
*** Existing button/contact
11 Connection of inputs and
outputs
12 Comparison
HT 642-... with MOM/MOC 611-...,
HT 740-... with MOM/MOC 711-...,
13 Address setting using the sliding
switches.
(See programming instructions)
Dismantling
14 To remove the housing, press the
lock upwards using a flat blade
screwdriver. The circuit board and
receiver remain on the upper part of
the housing.
Lettering
15 The lettering panel can be
inscribed to indicate the button
functions. The see-through panel
can be lifted at the side.
13