Laskomex CD-2000, Installation, Operation & Programming Instructions

- 7 -

CD-

Elementy systemu domofonowego

2500

2, 4, 8, 16, 32, 64, 128

To program the uniphones, use suitable jumpers on the uniphone programming

connector.  These jumpers should be installed for which the sum of their numerical

 values is equal to a number of a given uniphone.  Numerical  values of the jumpers

and version of series are shown on the printed circuit board. Example: to obtain

uniphone number equal to 12, install jumpers on connectors 4 and 8 (4+8=12); to

obtain uniphone number 45, use connectors 1, 4, 8, 32  (1+4+8+32=45).

NOTE:

Do not program “0” As this setting is not included in the program it may may result

in malfunctioning of the program.

3.4. Connecting uniphones to electronic cassette.

Terminals marked L- L+ are designed for connection of the uniphones to the electronic

cassette.  All  uniphones in the system are connected to the same two-wires conductor

in parallel.  255 uniphones LF-8 or LX-8 may be connected to the line.  Prior to

connecting the uniphone line make sure that the line is not short-circuited.  The line

resistance (measured by means of a digital  meter) should be at least 100 kiloohms.

 Generally, the system is resistant to possible short-circuiting occuring during both

installation and operation.  The electronic circuit, however, should not be operated

under short-circuit conditions during a long time as high shortücircuit current results

in increased heat emission and this may disadvantageously affect the system

operation reliability.  If the uniphone line is short-circuited during the system operation

error message E-2 is displayed and no call  is possible.  In this case coded locks

can be used.  Connecting the uniphones, pay attention to proper polarity of the line.

 For this reason it is recommended to use cable with coded wires.

3.5. Conecting system power supply.

With the electronic cassette and uniphone line connections checked, the system

power supply may be connected.  Use the transformer supplied with the system.

It has two secondary windings, one of them designed for supplying the electronic

cassette.  This winding has two outputs:

-12V/0.8A -used for 220V +/- 10% mains voltage

-14V/0.8A -used for the mains voltage lower than 220V-10%=198V.

The second secondary winding is used for supplying electric lock catch.  It produces

12V/0.8A  After the power supply switching on  the system counts a time provided

for stabilization of the uniphones (approx.  25s).  After the stabilization time the

system is ready for operation.  The

stabilization time is counted each time the power supply is switched on.  Additionally,

lock is switched on for a moment for test.  When time counting is completed, a dot

is displayed at the display right side.  The door phone is ready for operation.

Each time the power supply is switched on, a procedure of restoration of predefined

code table can be called by touching fields C+  simultaneosly provided, however,

this function has not been disabled by the program.  Refer to section dealing with

the system programming for details.

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