Velleman HAA2801 - Manual (Page 11)

1 - 2 : 12-24V DC I/P -- (Power Input Terminal)
Connect to a 12-24V DC power supply. The (-) supply and the (-) GND are the common grounding
points of the system. The system accepts full input voltage range.
3 : KEYPAD POWER O/P -- (Power Output for External Keypads – 500mA Max.)
This power source is prepared for the external keypad(s). Its output voltage follows to the input
voltage at terminals 1 - 2 but the output current is limited to 500mA only. This output terminal is
protected by a 500mA reset-able fuse to prevent sabotage to the internal power supply of the
system with short circuit from the external keypad.
4 : DATA I/O PORT -- (Data Input/Output Port for Split-Decoded Operation)
Connect this terminal with the Data I/O wire from the wire harness on the keypad unit to link up
system for Split-Decoded operation. Maximum 3 keypads can be connected in parallel to this
terminal.
Note:
Leave this terminal open if the controller is in Stand Alone operation. (Stand Alone operation is one
of the operation modes of the HAA2800)
5 : EG IN -- ( Egress Input)
A Normally Open (N.O.) input terminal referring to (-) ground. With the help of a normally open
button to activate Output 1 for door open in the same manner of using the User PINs or Cards
on keypad in Split-decoded mode; OR follows the Function Mode jumper setting of Start/Stop or
Momentary in Stand Alone mode.
Egress button is usually put inside the house near the door for exit convenience. More than one
egress buttons can be connected in parallel to this terminal. Leave this terminal open if not used.
6 : DOOR BELL I/P -- (Door Bell Button Input)
A terminal prepared for the connection of a normally open (N.O.) button referring to (-) ground to
activate the built-in door chime. More than one door bell buttons can be connected in parallel to this
terminal. Leave this terminal open if not used.
7 : DU OUT -- (Duress Output) – Available on Split-decoded Mode Only
An NPN transistor open collector output with the maximum power rating of 24VDC/100mA sink. It
is equivalent to an N.O. (Normally Open) terminal switching to (-) ground after the entry of Duress
Code. Use it to trigger an alarm zone of a security system, or turn on a buzzer to notify a guard.
Please see the application hints for more information.
Duress Function is available only on Split-decoded mode with Duress Code programmed from
keypad.
8 : INTER-LOCK O/P -- (Inter-lock Control Output)
An NPN transistor open collector output with the maximum power rating of 24VDC/100mA sink. It is
OFF at normal condition. It switches to (-) ground immediately for the first 5 seconds after received
an operation command for Output 1 or after keying in a valid User PIN or reading a Card to operate
Output 1. It keeps tying to (-) ground during the Door Position Sensor is open circuit due to door
open. Use this output point to make cross wire connection with the associated controller’s “O/P 1
Inhibit” point in an Inter-lock system to prevent both doors that can be opened at the same time.
An Inter-lock System:
An inter-lock system is a two-door system that always allows only one of the doors to open during
the operation. While one of the doors is opened, the other door keeps close until the open door is
re-closed. It prevents the unauthorized people dashing into a protected area.
An inter-lock system needs two keypads or controllers and two door position sensing switches for
the two doors. Please see the Application Example for more information
9 : O/P 1 INHIBIT -- (Output 1 Inhibit Control Input – Normally Open)
A Normally Open (N.O.) sensing input point for controlling of the Output 1, with this terminal
connecting to (-) ground, the Egress Button and the whole group of Users (PINs & Cards) for
Output 1 are disabled. It is prepared mainly for the cross wire connection with the “Inter-lock O/P”
point on the associated controller in an Inter-lock system. The inhibit function also governs the RF
remote control key from operating of the Output 1 (if the decoder is HAA2800).
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