each other, make sure the signals of one reader are blocked by a sheet of metal. Do not forget to use a spacer
between the metal plate and the reader.
Address settings on the AlphaVision NG Proximity Reader
The NG Proximity Reader is connected to the RS-485 bus. It also obtains its power from the RS-485 bus.
Every NG Proximity Reader must be set to a unique address. Up to 8 NG Proximity Readers can be
connected to an AlphaVision NG control panel. The addresses of the NG Proximity Readers do not
influence the address settings of the other AlphaVision NG equipment. This means it is possible to have a
keypad with address 1, an I/O module with address 1, an RO module with address 1 and also an NG
Proximity Reader with address 1.
Show address setting
The address of the NG Proximity Reader is not set by a dipswitch, like with the other AlphaVision NG
equipment, but by using a tag. The NG Proximity Reader is set by default to address 1. Showing the address
setting of an NG Proximity Reader is very simple: When the NG Proximity Reader is connected to a power
supply, the 2-color LED blinks red a few times, and then extinguishes. The number of times the LED blinks
red, stands for the address of the NG Proximity Reader. After showing the address, the LED will turn green
for a while. After this time, with no further actions, the LED will blink alternately red and green.
Changing address settings
The address of the NG Proximity Reader can easily be changed. To do this, disconnect the power supply and
then reconnect the power supply. The NG Proximity Reader will now show the current address setting with
a blinking red LED. Now present any tag, for the number of times you wish to set the address to. So, if the
NG Proximity Reader must be set to address 7, the tag must be presented 7 times. Each time the tag is
accepted, the LED will flash green. When this is done, disconnect and reconnect the power to check the
current address setting.
OC output of the NG Proximity Reader
The NG Proximity Reader is supplied with an Open Collector output. The function of this OC output can be
programmed by executing function <29>. This OC output can supply up to 100mA. It is possible to connect
an entry/exit buzzer directly to this OC output. The other side of the buzzer must then be connected to +12V.
For controlling a door strike, the OC output must be connected to a relay. With this relay the power supply
of the electric door strike can be controlled. Always place a diode anti-parallel over the relay coil! An
electric door strike should be supplied by its own power supply, not by the AlphaVision power supply.
Especially for this application, an expanded RO module has been developed, having it’s own powersupply
for an electrical dooropener. It is advisable to use that expanded RO module whenever an electrical
dooropener has to be installed.
Programming and functioning of the access control system is further explained at Function <29>
programming.
Attention: when several NG Proximity Readers are connected to the system, be sure to program the
Reader addresses before connecting the Proximity Readers to the bus.
This can be done by first
connecting the Reader to a power supply, setting the address, and then connecting it to the bus.
AlphaVision NG installation manual Rev. 2.0 27-08-2003 Blz. 16/101
