Velleman HAA2890 - Manual (Page 30)

30
APPLICATION EXAMPLE
BASIC WIRINGS OF A STAND ALONE 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.
12V DC
POWER
SUPPLY
AD-1312
OR
AP-960
ELECTRIC LOCK
N.O. N.C.
OR
CATHODE
1N4004
OUTPUT RELAY
N.O. Output for
Fail-secure Lock
N.C. Output for
Fail-safe Lock
EGRESS
BUTTON
MORE EGRESS
BUTTONS CAN
BE CONNECTED
IN PARALLEL
N.O.
N.O.
THE WIRE HARNESS
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