Velleman HAA2801 - Manual (Page 16)

16
APPLICATION EXAMPLES
1) BASIC WIRINGS OF A SPLIT-DECODED DOOR LOCK
NOTE:
• 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 HAA28xx Series. More than one
keypads can be connected in parallel.
-
A
LA
RM O/P
-
KEY ACT O
/P
-
N.O
. -
COM -
N.C
. -
N.O
. -
COM -
N.C
. -
N.O
. -
COM -
N.C
. -
T
AMPE
R
-
GND
(-
)
-
DOOR SENS -
O/P 1 INHI
B
-
IN
T.
L
OC
K
-
DU OU
T
-
DOOR BELL IN -
EG IN -
D
AT
A I/
O
-
KEY
PAD PW
R
-
GND
(-
)
-
12-24V DC
N.O.
ELECTRIC LOCK
1N4004
CATHODE
OUTPUT RELAY 1
N.O. Output for Fail-secure Lock
N.C. Output for Fail-safe Lock N.C.
OUTPUT 1 OUTPUT 2 OUTPUT 3
DIGITAL KEYPAD
AD-1312 OR AP-960
EGRESS BUTTON
MORE EGRESS
BUTTON CAN
BE CONNECTED
IN PARALLEL
DOOR BELL
BUTTON
N.O.
(-)
(-)
(-)
N.O.
N.O.