SDC 920 EntryCheck - Manual (Page 3)

KEYPAD WIRING
See Fig. 3 for an example of a basic door installation. The keypad is
mounted adjacent to the door. An electric door strike is mounted in the
door jamb to release the door lock. A magnetic switch is mounted on top
of the door jamb for detecting when the door is open.
Use the following steps to wire the keypad. Refer to the wiring diagram
shown in Fig. 4 to assist in the wiring.
Note: Up to 500 feet of 18 AWG wire can be run for power, use larger wire
for longer runs. Use 22 AWG or larger (depending on load) for other
connections.
Output
Install a low voltage electric door strike for unlocking the door.
Route two wires between the door strike and the keypad box.
Connect a MOV or varistor across the coil wires of the strike.
Connect the (+) door strike wire to the keypad’s MAIN RELAY N.O.
blue wire. Connect the other door strike wire to the keypad’s PWR
black wire (-). Connect a wire between the keypad’s PWR red wire
(+) and the MAIN RELAY COM white wire.
Power
Choose a location for the DC power supply or AC transformer.
Route two wires between the door strike and the keypad box.
Connect the power supply’s output terminals to the keypad’s PWR
red (+) and black (-) input wires. Observe wiring polarity if using DC.
If AC is being used, polarity does not mater.
Caution: If the unit is AC powered, make sure the secondary of
the system transformer is isolated from earth ground.
Earth Ground
To avoid damage to the unit from static discharges, connect the
EARTH GROUND black wires E1, 4, 5 or 8 to a good earth grounding
point. Suggested wiring size is 18 AWG for earth ground.
Sense Input
RE Note: The SENSE input (gray wire) can be programmed for either a
door sense or inhibit input. Both features cannot be used at the same
time. If you are not using the sense input, program the input for inhibit.
To use the door sense feature to detect forced entry or door ajar
conditions, install a normally closed door switch on the door and route
two wires from the switch to the keypad box. Connect the door switch
to the keypad’s SENSE terminal (gray wire E8) and COM terminal
(any black wire).
If an inhibit switch or timer is going to be used for temporarily
disabling the keypad, route two wires from the switch or timer to the
keypad box. Connect the inhibit switch/timer normally open terminals
to the keypad’s SENSE (gray wire E8) and COM (black wires)
terminal.
Request-to-Exit Input (wiring shown on page 3, fig. 4)
If a request-to-exit pushbutton is going to be used, route two wires
from the keypad box to a normally open pushbutton mounted on the
secure side of the door. Connect the wires to the pushbutton and to
the keypad’s REX (violet wire E6) and COM (black wires) terminals.
Solid State Outputs
The two solid state outputs (Outputs #3 & #4) can be programmed to
activate during various conditions. These outputs can be used to activate
indicators or sounders. See fig. 5 for wiring examples using the solid state
outputs.
P:\INSTALLATION INST\Access Controls\INST-920\INST-920.vsd Rev B 03-14 Page 3
Fig. 5 Using Solid State Outputs
Fig. 3 Basic Door Installation
OUTPUT #3 LIGHTS AN LED
OUTPUT #4 LIGHTS AN LED AND SOUNDS A BEEPER EXAMPLE #1:
POWER
SUPPLY +
LED
LED
BLUE
GREEN
1KΩ
1KΩ
-
+
OUTPUT #3
OUTPUT #4
ELECTRONIC
BEEPER
OUTPUT #3 LIGHTS A LAMP POWERED FROM AN EXTERNAL SOURCE
OUTPUT #4 TRIGGERS A NORMALLY OPEN ALARM PANEL ZONE EXAMPLE #2:
BLUE
GREEN
OUTPUT #3 COM
OUTPUT #4 COM
POWER
SOURCE
OUTPUT #3
END OF LINE
RESISTOR ALARM PANEL
NO ZONE
COMMON
LOW
VOLTAGE
LAMP
-
+
BLACK
BLACK
OUTPUT #4
EACH
OUTPUT
100 mA
MAXIMUM
W
ir
e
P
ig
ta
il
W
ir
e
P
ig
ta
il
920
keypad
Fig. 4 Basic Door Installation Wiring
GRAY
BLACK
BLACK
BLACK
BLACK
BLUE
GREEN
VIOLET C
NC
NO
C
NC
NO
NC DOOR
POSITION SWITCH
NO REQUEST-TO-
EXIT SWITCH
SENSE
GROUND
REQUEST-TO-EXIT
GROUND
GROUND
GROUND
OUTPUT
OUTPUT
EARTH
GROUND
CONNECTION
WIRES
E
1
E
2
E
3
E
4
E
5
E
6
E
7
E
8
TO POWER SUPPLY
KEY PAD POWER
12-24 VOLTS
AC OR DC
}
+
- BLACK
RED
AUXILIARY RELAY
2 AMPS @ 28VDC
MAX
}
NC
NO
COM
GRAY
GREEN
ORANGE
FAIL SECURE CONNECTION
FAIL SAFE CONNECTION MAIN RELAY
5 AMPS @ 28VDC
MAX
}
NC
COM
NO BLUE
WHITE
YELLOW