4-1
Chapter 4
4322 Cotag Reader module
Description
The 4322 Cotag Reader module provides the functions required to
drive two Cotag Reading Heads or Loop Couplers, indicator LEDs,
door monitoring, door exit switches, and a relay for each door lock.
These functions are described below. Note: a 4210 RF module must
be fitted to the 4101-2 Controller in which Cotag reader modules are
installed to provide the signals for the antennas. Every 4101-2
Controller in the system must be taught its Distributor Code before it
will read cards and tags.
Transmit and receive (Tx and Rx)
Transmit and receive terminals on the 4322 module connect directly
to the 280 Reading Head, 090 Reading Head, or 270 Loop Coupler.
The transmit signal generated by the RF module in the 4101-2
Controller switches the Card on when it comes in range of the
antenna, and the code stored in the Card is then read via the receive.
LEDs: red, amber and green (
,
and G)
The 280 Reading Head has three LEDs whose cathodes connect to
these outputs from the 4322 module. VA is the common anode
connection. With a loop antenna system, the 272 Remote Indicator
should be used to provide the three LEDs. The 090 Reading Head has
two LEDs: red and green.
Warning outputs (for local buzzer when door is left open or
forced)
The horn terminals provide local warning outputs. The 280 Mk2
Reading Head has a buzzer built in which can be connected between
and VA on the 4322 module. Almost any 12V DC buzzer can be
used in conjunction with other antenna systems.
Relay connections: normally open (NO), normally closed
(NC) and common (Com)
The relays do not provide any power, but can be used to switch the
door lock mechanisms, either using the normally open connection for
fail secure, or the normally closed connection for fail safe. There is a
separate relay for each door.
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