Aiphone C-123LW Intercom System User Manual


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1
E
E
-
1
L
L
+
-
RY-AC
BELL
SKK-620B
IMPORTANT: Connect wires
before applying power.
C-123LW Supplement
Pg. 3
WIRING DIAGRAM: LEM-1DL System with External Signaling using RY-AC Relay
+
MODIFICATION INSTRUCTIONS:
C-ML/A with Door Release contact Modifi ed to Normally Closed (for Magnetic Lock)
Normally Open Dry
Contact to door
strike and power
Component Module*
If a DAK-2S is not available, install components as shown below.
Capacitor: 25V, 15-33ufd Non-polarized
Diode: 1N4148
Output of RY-AC (Yellow
wires) provide a momentary
dry contact closure while
the call button on the door
station is being pressed.
12V DC power
supply
NOTE: Negative of
power supplies must be
tied together.
C-ML/A
Component
Module*
C-D
White
Red
Black
Power source
for bell
To 1 of C-D and
WHITE wire of RY-AC
To 1 of C-ML/A
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 modifi cation 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.
+-
60H-2
A
8
THA1
547
Door release
switch
COM
NO
NC
C-ML/A Rear View with PC board removed.
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