Aiphone LDF-20C Wiring Diagram System Used For Selective Door Release, Operation, Specifications

WIRING DIAGRAM: SYSTEM USED FOR SELECTIVE DOOR RELEASE

LDF-20C

1

2

3

~

20

E

-

LE-D

1	LE-D	LE-D
	1
		1
E	E	E
-	-	-

To activate door release, press button located above TALK button.

1

2

3

~

20 L

BLK

RY-PA	YEL				Momentary Closure for Station #1
#1		RY-PA			Momentary Closure for Station #2
	BLK		YEL
		#2			Momentary Closure for Station #3
				RY-PA
			BLK		YEL
				#3
					Common for each closure

Normally Open contacts are maintained when the door release button is being pressed while a station button is selected.

PS-1225UL
		+
	+
	-		-

External	To convert RY-PA to N/C
Terminal Block		x x
	(normally closed) contact:
	Move one yellow wire	AC Power
	from "NO" to "NC".
		for Door
	(Internal modification,	Releases
	soldering required.)

OPERATION:

*POWER SWITCH MUST BE ON FOR SYSTEM TO BE OPERABLE.

1.When a station calls in, press the selector button corresponding to the lit LED.

2.To speak to the person at the remote station, press the TALK button (or pick up the handset). Release TALK button to hear reply. Communication via the handset is VOX (voice actuated).

3.If the extra contacts are used as shown in the "camera call-up" diagram, activating a device that is to remain on for the duration of the call, the station's relay will stay activated as long as the selector button is depressed.

4.If the extra contacts are used as shown in the "selective door release" diagram, press the "door release" button while the selector button is depressed. This will activate the corresponding relay as long as the button is

being held, which will activate the door release mechanism.

5.If both functions are used on a channel, the device connected to the "constant closure" relay will be on for the duration of the call. The "momentary closure" will only be active when the door release button is pressed.

6.When the conversation is completed, press the OFF button to the left of the station selector button. Hang up handset.

SPECIFICATIONS			For additional information about this system,
			please refer to the LAF-C/CA instructions.
Power Source:	12V DC at master. Use PS-1225UL.
Commun. Output:	800mW at 20 ohms
Communication:	Push-to-talk, release-to-listen (TALK button) or VOX handset at master.
	Hands free at sub station.
Calling:	Master to sub:	By voice only
	Sub to master: Call button on sub activates tone and LED at master.
		LED remains lit for 20 seconds, and tone is momentary.
Wiring:	2 conductors homerun to sub station (single-master system only),
	or loop multi-conductor with 2 common + 1 individual wire per sub station on wire run.
	Separate 2 conductor from RY-PA to external device.
	Shielded cable is recommended.
	Use Aiphone #822202 (2 cond., 22AWG) or #822203 (3 cond., 22AWG) wire.
Wiring Distance:	650' with 22AWG; 1,600' with 18AWG.
Aiphone Communication Systems		TOLL FREE TECHNICAL SUPPORT:
1700 130th Ave. N.E.		(800) 692-0200
Bellevue, WA 98005		TOLL FREE FAX LINE:		Pg. 2
(425) 455-0510		(800) 832-3765		LDF Instr.
FAX (425) 455-0071		E-MAIL: tech-serv@aiphone.com		1103BKJS