Modification Instructions, Ry-Ac, Bell

WIRING DIAGRAM: C-123L/A System with External Signaling using RY-AC Relay

	Component
C-D	Module* C-ML/A
1	1

E	SKK-620	E	12V DC
			12V DC
			power supply		WHITE
			power supply

NOTE:Negatives of	+	+		+	RED
NOTE:Negatives of	+	+		+
power supplies must	-	-	-		BLACK
be tied together.	-	-	-

RY-AC

Output of RY-AC (Yellow wires) provide a momentary dry contact closure while the call button on the door station is being pressed.

BELL

YELLOW

Power source

for bell

Normally Open Dry Contact to door

strike and power

L L

Component Module*

If a DAK-2S is not available, install components as shown below. Capacitor: 25V, 15-33mfd Non-polarized (Aiphone NP-25V) Diode: 1N 4148

To 1 of C-D and

WHITE wire of RY-AC To 1 of C-ML/A

MODIFICATION INSTRUCTIONS:

C-ML/A with Door Release contact Modified to Normally Closed (for Magnetic Lock)

C-ML/A Rear View with PC board removed.

Magnetic locks require Normally Closed contacts, keeping power applied to the magnet to keep the door locked, and breaking power to release the door. These instructions explain how to change the contact in the C-ML/A to Normally Closed.

1.Remove back chassis of C-ML/A and move PC-754 aside. Black door release switch will be visible.

2.On the switch, move* the wire from the NO contact (middle position) to the NC contact (top position).

*Desoldering and resoldering is required.

3.This modification will change the door release button's function to Normally Closed, to be used with a magnetic lock device.

4.Switch contact rating is 1A at 50V AC.

60H-2A 8 THA1 547

Door release

switch

COM

C-123LW Supplement Pg. 3

C-123LW specifications

The Aiphone C-123LW is an innovative intercom system designed for both residential and commercial settings. Known for its reliability and user-friendly features, this intercom enhances communication and security within various environments. Its sleek design and advanced technology make it a popular choice among consumers seeking quality communication solutions.

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