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WIRING DIAGRAM:
NDR-20A
1
2
3
~
20
E
To activate
door release,
press button
located above
TALK button.
H
PS-2410A
+
+
-
-
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:
Commun. Output:
Communication:
Calling:
Wiring:
Wiring Distance:
Aiphone Communication Systems
1700 130th Ave. N.E.
Bellevue, WA 98005
(425) 455-0510
FAX (425) 455-0071
SYSTEM USED FOR SELECTIVE DOOR RELEASE
RY-PA
1
BLK
#1
2
BLK
3
~
20
L
External
Terminal Block
24V DC at master. Use PS-2410A (NDR-10, 20) or PS-24E (NDR-30, 40).
500mW at 20 ohms
Push-to-talk, release-to-listen (TALK button) or VOX handset at master.
Hands free at sub station.
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.
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.).
420' with 22AWG; 1,000' with 18AWG.
For additional information about this system,
please refer to the standard NEM instructions.
NE-JA
NE-JA
1
1
2
2
3
3
4
4
YEL
RY-PA
YEL
#2
RY-PA
BLK
YEL
#3
To convert RY-PA to N/C
(normally closed) contact:
Move one yellow wire from
"NO" to "NC". (Internal
connection, soldering
required.)
Toll Free Technical Support
Phone: 1-800-692-0200
FAX: 1-800-832-3765
NE-DA
1
2
Blk
Wht
Normally Open contacts
Closure for Station #1
are maintained when the
door release button is
Closure for Station #2
being pressed while a
station button is selected.
Closure for Station #3
Common for each closure
x
x
AC Power
for Door
Releases
Pg. 2
NDR Instr.
1198jd
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