Aiphone NDR-20A, NDR-10A Operation, Specifications, For additional information about this system

WIRING DIAGRAM: SYSTEM USED FOR SELECTIVE DOOR RELEASE

NDR-20A	NE-JA
1	1	NE-JA	NE-DA
2		1
			1
3
~	2		2
20		2
E	3	3	Blk
	4	4	Wht

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

1		RY-PA					Closure for Station #1
	BLK		YEL
		#1
							Closure for Station #2
2				RY-PA
			BLK		YEL
				#2
							Closure for Station #3
3						RY-PA
					BLK		YEL
~						#3
20	L						Common for each closure

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

PS-2410A		H
		+
	+
	-	-

External

Terminal Block

To convert RY-PA to N/C (normally closed) contact: Move one yellow wire from "NO" to "NC". (Internal connection, soldering required.)

x x

AC Power

for Door

Releases

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 pressed, which will activate the door release mechanism.

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

SPECIFICATIONS
Power Source:	24V DC at master. Use PS-2410A (NDR-10, 20) or PS-24E (NDR-30, 40).
Commun. Output:	500mW 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 after pretone.
	Sub to master: Call button on sub activates tone and LED at master,
		remaining active until answered.
Wiring:	2 conductors homerun to sub station, or loop multi-conductor with 1 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 (22AWG)
		or #821802 (18AWG) wire (2 cond.).
Wiring Distance:	420' with 22AWG; 1,000' with 18AWG.
Aiphone Communication Systems		For additional information about this system,
		please refer to the standard NEM instructions.
1700 130th Ave. N.E.
		Toll Free Technical Support
Bellevue, WA 98005
		Phone: 1-800-692-0200
(425) 455-0510
FAX (425) 455-0071		FAX: 1-800-832-3765

Pg. 2

NDR Instr.

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