90102
0610
C-123LW Supplemental Instructions
Dual Master ChimeCom System
- REFER TO INSTALLATION MANUAL INSIDE C-123L/A BOX FOR STANDARD
INSTALLATION INFORMATION -
The C-123LW Dual Master ChimeCom set provides chime, communication, and door release for one door and two
inside locations. This supplemental instruction manual addresses many of the additional functions and modifications
for the Chime Com system, including installation and troubleshooting information.
C-123L/A Set
MASTER STATION:
C-ML/A:
Master station with door release button (Normally Open)
COMPATIBLE DOOR STATIONS: (Weather resistant, made for outdoor use)
C-D
Surface mount, included in C-123L/A and C-123LW kit
LE-D
Surface mount, plastic door station (replacement for C-D)
Flush mount in 2-gang box, stainless steel cover
Vandal resistant, 1-gang flush mount, stainless steel
Vandal resistant, 2-gang flush mount, stainless steel
Vandal resistant, 2-gang flush mount, stainless steel, red mushroom button
Vandal resistant, 3-gang flush mount, white powder-coat finish
LE-DA
LE-SS-1G
LE-SS
LE-SSR
LS-NVP/C
OPTIONAL COMPONENTS & ACCESSORIES:
RY-AC/A
DAK-2S
External signaling relay (Requires 12VDC power supply)
LE-SS-1G
LE-SS
LE-DA
Dual master adaptor kit (2component modules)
(1 kit per 2 master stations. Use 2 DAK-2S for up to 4 total master stations)
Surface mount box for LE-SS-1G
Surface mount box for LE-SS, LE-SSR, LE-DA
Surface mount box for LS-NVP/C
Door strike (for interior wood frame doors only)
AC 12V Transformer (used for door strike)
6V DC power supply (1 per C-ML/A master)
2 conductor, 22AWG, Shielded wire for up to 245’, (500’ and 1000’ boxes)
2 conductor, 18AWG, Shielded wire for up to 590’, (1000’ box)
Install two separate runs of this cable, one for the intercom and one for
the door release.
SBX-1G
SBX-2G
SBX-NVP
EL-12S
PT-1210N
SKK-620B
822202
LS-NVP/C
821802
DAK-2S
(2 component modules per kit)
DOOR RELEASE WIRES MUST BE IN A SEPARATELY JACKETED CABLE FROM THE INTERCOM WIRING.
C-123LW Set contains:
2 C-ML/A, 1 C-D, 1 DAK-2S
C-D
C-ML/A
Power source and Door Strike not included.
2 cond. shielded for intercom
SKK-620B
IMPORTANT: Connect wires
before applying power.
(or 4 “C” batteries installed in
the master). Do not use both
power sources. Ground wire
must be tied to earth ground
when using the SKK-620B.
Power
Source
for Strike
Separate 2 conductor for door release
EL-12S, not included with the C-123L/A or C-123LW set.
C-123LW Supplement
Pg. 1
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WIRING DIAGRAM: LEM-1DL System with External Signaling using RY-AC Relay
Component
Module*
C-D
C-ML/A
IMPORTANT: Connect wires
before applying power.
1
1
Output of RY-AC (Yellow
wires) provide a momentary
dry contact closure while
the call button on the door
station is being pressed.
E
E
12V DC power
supply
White
BELL
SKK-620B
NOTE: Negative of
power supplies must be
tied together.
Red
+
-
+
-
RY-AC
Black
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, 15-33ufd 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)
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 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.
-
+
Door release
switch
NC
NO
COM
4. Switch contact rating is 1A at 50V
AC.
C-123LW Supplement
Pg. 3
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INSTALLATION TIPS:
1. Use shielded wire for the communication path, and ground one end of the shield to an earth ground.
2. Run intercom wire at least 20” away from AC wiring, fluorescent lights or dimmer switches.
3. Keep intercom cable away from alarm, data, phone, video cables, and any other potential source of
interference.
4. Door release wires must be in a separately jacketed cable from the intercom wires. Use two separate
cables; one for audio and one for door release.
5. When installing a second master station, wire must be run from the first master station, not from the
door station. See diagram on page 2.
6. Do not install the master station near light switches, dimmer switches, or other devices that may cause
interference with the intercom system.
7. Do not install the master station on the opposite wall from the door station. If the units are too close,
acoustical feedback may result.
TROUBLESHOOTING GUIDE:
PROBLEM
POSSIBLE CAUSE
SOLUTION
When door calls in, it shorts the #1 terminal to the E terminal.
If the DAK-2S is installed backwards the chime from the
door call-in will not be heard. Install the DAK-2S component
module with the bare wire under the 1 terminal, and the door
station 1 wired to the colored wired end of the DAK-2S.
No call in from door to master, but
communication works fine.
Reversed DAK-2S component module.
When the talk button is pressed, the other
master rings.
Missing or reversed DAK-2S
component module.
Install the DAK-2S component module as described above
and shown on the dual master instructions.
If both C-ML/A’s share the same power supply, a ground loop
feedback will occur when the talk button is pushed. Install a
separate power source for each master.
When the talk buton is pressed, feedback is
heard at both masters.
Common power supply.
Terminals 1 and - crossed
+/- are on left column, E/1 are on right column. If swapped,
unit will appear dead. Verify that 1 from the door station is
connected to 1, and negative of power supply is connected to -.
Unit appears dead; No functionality
Take batteries out of the master station. Both power sources
cannot be used simultaneously.
Power supply and batteries both
installed.
System squeals and batteries get hot
Chime tone sounds weak, low frequency
If batteries are installed, replace them. If using a power
supply, check for 6VDC. If low, install a new SKK-620.
Weak batteries or low voltage.
Incorrect cable being used.
If the resistance of the wire is too great, usually from
exceeding distance limitations, the master may not time out as
designed. Refer to wire specifications in the instructions.
Master stays on; does not time out.
Voice volume is too loud or too soft.
Remove front cover of the C-ML/A and locate volume
potentiometer through hole at bottom of unit. Use a small
screwdriver to adjust the volume, clockwise to increase.
Volume control not adjusted properly.
Standard volume level.
There is not a separate call tone volume adjustment on the
C-ML/A so the volume level cannot be altered. Surface mount
component level modification would be required, which is not
paractical
Chime tone volume is too loud.
Make sure the negative from the 12VDC supply for the RY-AC
is connected to the negative of the C-ML/A master. Make sure
the WHITE wire of the RY-AC is connected to the DAK-2S
component module to terminal 1, not negative terminal.
RY-AC external signaling relay not working.
Missing or wrong connection.
Aiphone Communcation Systems
1700 130th AVE N.E.
Bellevue, WA 98005
(425) 455-0510
C-123LW Supplement
Pg. 4
Toll Free Technical Support:
1-800-692-0200
E-mail [email protected]
#90102
0610JD
FAX (425) 455-0071
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