Velleman HAA2890 - Manual (Page 27)

27
THE APO DATA I/O PORT -- FOR SETTING UP A SPLIT-DECODED KEYPAD
The information here is for setting up the keypad unit with an optional “Digital Keypad Access Controller DA-2800” to
make up a high security Split-decoded Keypad system only. It is NOT required for the keypad in Stand Alone operation.
Split-decoded Keypad System
Most of the general purpose keypads on the market are self-contained systems for stand alone operation. It controls the
appliance(s) directly with its output relay contact(s); such as the electric lock in an access control system. The electric
lock is connected to the keypad that is installed outside the house. The thief can open the door without a code or card
but just open the keypad box and make contact to the output relay terminal. It is a safety drawback in security.
The high security systems are usually operating in the Split-decoded mode that combines an outside unit for card
reading and code entry; and a control panel or a decoder unit installing in a secure closet inside the house. The outside
unit and the inside unit communicate in digital data with each other. All the commands are in digital codes, the thief can
do nothing to the inside unit even the outside unit is opened in sabotage. This design philosophy confirms high security
to the area protected, but not just relying on the protection of the keypad with the outer box and two screws.
The keypad unit comes with a data I/O (data input and output) port for the connection with the APO’s Access Controller
DA-2800 for Split-decoded operation to up-grade its security level. Once the keypad unit is connected with the
controller, all the commands from it will be faithfully decoded by the decoder. The input & output control functions
available from the keypad are now all transferred to the controller. The keypad’s role is just a card reader and/or a
keyboard for code entry. The link up of the two units is very simple. It is just one wire (The White Wire) for the I/O ports
and a common grounding wire (The Black Wire) for the two units. The I/O port provides the data in the proprietary APO
format. It ONLY works with the DA-2800.
The Optional DA-2800 Controller --- Introduction
The DA-2800 controller unit is compatible with the keypad unit. Maximum 3 keypads can be connected in parallel to it.
It decodes the data faithfully from the keypads even each of them have different settings of their own. The only criterion
for multi-keypad link-up is all the keypads are set with the same Master Code and is read by the controller while it is in
the link-up mode.
Apart from the decoding function to follow the features from the keypad(s), the DA-2800 is also an independent
4-channel RF remote controller to operate its 3 output relays and the built-in door chime. The DA-2800 is an ideal
device working independently in the RF remote control areas, such as door lock strike in access control, garage door
opening control, alarm arm-disarming control and automatic operator control etc.
The keypad unit is up graded to a Tri-Tech system after in connection with the DA-2800 controller. The system accepts
EM Cards, User PINs and the RF Remote Keys in access control.
The User Manual of the DA-2800 provides the operation details of the system on decoding controller mode and
independent operation mode. Please contact your local agent if purchase of the DA-2800 Controller is required.
REMARK: DA-2801 is the simplified version of the DA-2800 without wireless remote control funtion.
HAA2890 IN SPLIT-DECODED OPERATION
MAXIMUM 3 KEYPADS CAN BE
CONNECTED IN PARALLEL
RF WIRELESS
REMOTE CONTROL
DOOR LOCK
GARAGE
DOOR OPENER
SECURITY SYSTEM
OR
AUTOMATIC
OPERATOR
COMMON
GROUND
COMMON GROUND
DK-2890
DK-2890
DATA I/O
DATA I/O
EXIT
DA-2800 ACCESS CONTROLLER
DA-2800 OR DA-2801
CONTROLLER
HAA2890_Manual.indd 13 24/05/2012 15:21:13