Aiphone C-123LW installation manual Ry-Ac, Modification Instructions

WIRING DIAGRAM: LEM-1DL System with External Signaling using RY-AC Relay

C-D	Component			C-ML/A		IMPORTANT: Connect wires
1		Module*			1
							before applying power.			Output of RY-AC (Yellow
										wires) provide a momentary
E										dry contact closure while
					E					the call button on the door
						12V DC power				station is being pressed.
NOTE: Negative of	SKK-620B						supply	White			BELL
				+		+		Red	RY-AC
power supplies must be								Black
tied together.			-				-
										Power source
Normally Open Dry					L					for bell
							Component Module*
Contact to door
					L		If a DAK-2S is not available, install components as shown below.
strike and power
							Capacitor: 25V, 15-33ufd Non-polarized

Diode: 1N4148

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)

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 the PC-754 board 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 magnetic lock device.

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

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

60H-2A 8 THA1 547

-+

Door release

switch

NC

NO

COM

C-123LW Supplement

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