Instructions

67
Connect the 1N4004 as close as possible to the lock in parallel with the lock power terminals of the lock
to absorb the back EMF to prevent it from damaging the keypad. The 1N4004 is not required if the electric
lock is AC operated.
To avoid Electro-Static-Discharge from interfering with the operation of the keypad, always ground the (-)
terminal of the keypad to earth.
Always connect DOOR SENSOR terminal to (-) ground if not used.
Always connect TAMPER terminal to (-) ground if not used.
Make 3-wire Connection (+, -, DATA I/O) to the keypad in the DK-2800 series. More than one keypads can
be connected in parallel.
f) SPLIT-DECODED MULTI-STATION ACCESS CONTROL DOOR LOCK
Description
This is an expansion of application (3). The DK-2882 is expandable to a multi-station system in Split-decoded
operation. It is compatible with the auxiliary readers AR-2802 and the auxiliary reader-keypads AR-2806, AR-2807
& AR-2809. Total 3 auxiliary readers or reader-keypads can be connected in parallel with the Data I/O Bus. They
provide the same functions like the master keypad in using cards and user codes. The DK-2882 that is the server of
the system manages the data with its Data I/O Bus among the associated devices. This approach gives high security
in sabotage prevention and user convenience.
Make Operation Mode setting of the keypad in “Server Mode” with Location 94 = 1 in this application.
System Connection
DATA I/O BUS
(+) POWER SUPPLY
(–) COMMON GND
AR-2802/06/07/09
AUXILIARY READER
OR KEYPAD-READER
DA-2800 OR
DA-2801
(DECODER)
DK-2882
(SERVER)
ELECTRIC LOCK
Wiring Diagram