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PAGE 42 of 68 VX2200 TECHNICAL MANUAL VER1.5

EXTENSION SOUNDER (512D) EXTENSION RELAY (512DR)

Compatible with the “2 wire” BUS and has an 8 way Dip-switch to program the address of the device. Up to

3 units can be addressed with the same number (Ex.: 1 intercom and 2 extension sounders to be operated

with the same apartment number). The call tone is different according to the origin of the call (Main entrance

call or local door bell). A two level volume control is available using jumper JP1 (only for 512D, while for

512DR the JP1 is not used and stays in position “H”). Through the jumper JP2 it is possible to set the

number of rings (512D) or the number of relay pulses (512DR) between 1 or 6. The current consumption on

the BUS line is less than 1mA in stand-by mode. The Art.512DR can also be used as a “service relay” for the

entire BUS, activated by the alarm signal from an apartment. To use this function it is necessary to give the

unit the address 255.

- The 512D unit will ring according to the programming (1 or 6 times), or until the intercom handset is

picked up.

- The 512DR unit will operate the relay for 1 or 6 x 2 seconds on, 2 seconds off ,according to the

programming, or until the intercom handset is picked up.

Local call:

- The 512D unit will ring the number of times the local bell is pressed.

- The 512DR unit will activate the relay each time the local bell is pressed and will remain active as long

as the local bell remains pressed.

Alarm (only for 512DR addressed as 255)

The unit 512DR will activate the relay for 1 second (Independent of JP2 jumper settings).

Programming

The address of the unit must be programmed by means of the internal 8 way Dip-switch (see conversion

table decimal/binary) and must be the same as the phone or videophone connected in the apartment. To use

as a service relay activated by the alarm signals sent on the bus, set the address to 255.

In order to synchronize the local apartment call with the telephone, connect the “LB” terminal with the “LB”

phone terminal.

Technical specifications

Addressing range : from 1 to 180

Stand-by absorption : less than about 0.9mA

Call absorption : Approx. 15mA

Relay contacts : (Art.512DR)1A 125Vac max

Working temperature : -10 +50 C°

512D

512DR

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Videx VX2200 Guide de dépannage Page 42