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WIRELESS ACCESS CONTROL SYSTEM ACD-148
ACD-148
is an access control system which uses a quartz radiocontrol as a per-
sonal identification device.
The radiocontrol CARDIN mod.
S48
is specifically used in the
ACD-148
system as
its principal characteristic is the user code which is randomly created and stored
in a non-volatile memory inside the radiocontrol itself.
Nobody, not even the owner of the specific device, is able to discover his/her own
code nor are they able to reproduce another identical code.
The central unit of the
ACD-148
is based on a CPU which is able to control up 2000
codes referring to 4 different entrances and exits which can also be subdivided
into 4 different zones.
The following types of operation are possible for each code:
1. MEMORISATION OF A NEW USER CODE
2. MODIFYING THE USER’S PERSONAL DETAILS
2. CODE ENABLING/DISABLING
3. DISTINCT CODE ENABLING/DISABLING FOR EACH
OF THE 4 DIFFERENT ENTRANCES AND EXITS
4. CODE DELETION
All these operations can be carried out on site, if the operator is in possession of
the encoded access key, or remote access is available via a terminal or personal
computer network.
The device is equipped with an internal random code generator and with an inter-
face device which allows the codes to be transferred to the transmitter via direct
coupling.
The codes and user details are stored in non-volatile memory and therefore are
maintained even during blackouts.
For this reason there is also an erasing command for all the codes maintained in
memory.
The
ACD-148
can be operated both on site or via the use of a terminal and the
principal operations can be carried out using either of these solutions. To complete
the user details however a terminal or personal computer is required.
The liquid crystal display allows you to follow all the operations performed by the
device and verify the completion of each action.
When an enabled code is received one of the 4 internal relays, depending on which
radio control channel has received the signal, is activated and the following infor-
mation is indicated on the display.
- User number
- Activated channel
- Date and time of activation
If a code is used which is not present in memory a warning message will ap-
pear on the display, even if the code is compatible with the S48 handshaking
procedure, but the relative channel will not be activated.
The following operations are possible via the serial connection:
- modifying the system configuration parameters, i.e. date,time,baud rate,password
etc.;
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After an enabled user has been recognised the corresponding relay is activated.
The relay activation time, i.e. the time during which the normally open contact
remains closed can be chosen.
The relay default time is 500 mS. Choosing option 3 from menu level C will allow
you to modify this time
The following message appears on the screen:
CURRENT DELAY: 500 mS
ARE YOU SURE? [Y/N] >>
Choosing N the following message will appear
DELAYS AVAILABLE
1. [500 mS ]
2. [1 Sec. ]
3. [2 Sec. ]
4. [4 Sec. ]
ENTER [ 1- 4 ] >>>
If you choose option 2 the memorised delay time will be 1 second, i.e. the relay
will be released 1 second after it has been activated.
To cancel the operation and maintain the current delay time press the <ESC>
key.
C4.
Output activation
The relay in output can be activated directly by choosing option 4 from menu level
C. The following message appears on the screen:
SELECT THE OUTPUT TO BE ACTIVATED
1. Relay1 [ CHA ]
2. Relay2 [ CHB ]
3. Relay3 [ CHC ]
4. Relay4 [ CHD ]
5. END
ENTER >>>
The chosen relay will be activated immediately and will be released after the delay
time set in C3
D. Information lists
Choosing option 4 (print utilities) from the main menu you enter the menu LIST.
The following menu appears on the screen:
