Aiphone LAFC Instructions User Manual

							- INSTRUCTIONS -
The LAF-C Console Master system is a loudspeaker type, single talkpath open voice system.  Multiple masters 
can be used, along with a large variety of sub station models to create a communication system tailored to the 
users needs.  Master stations are available in 20-and 40-station sizes, with or without a handset.  For greater 
capacity, include a 20- or 40-station add-on selector.  Any LE- or LS- series sub station can be used.  
All Call and/or Background Music are optional features requiring additional equipment (BG-10C, PS-1225UL).  
LAF-C Console Master Loudspeaker Intercom System
Pg. 1
NAMES & FEATURES
FEATURES:
· Single or multi-master capability
· Commercial grade, durable master station for heavier usage
· Master stations available with or without a handset
· Single talkpath, with push-to-talk operation or handset at master, and hands free communication 
  at sub station
· Large variety of sub stations available
- Surface or flush mount, with or without privacy (LE-A, LE-AN,  LE-B, LE-BN)
- Weather resistant door stations (LE-D, LE-DA, LE-DL)
- Vandal proof sub station (LS-NVP/B, SBX-NVP surface mount box)
· Selective calling to sub stations, and master-to-master communication
· Subs call in with momentary tone and LED, remaining lit for approximately 20 seconds
· Optional All Call (additional equipment required) to call all stations simultaneously
· Equipment used for All Call also allows for background music to be heard through master and subs
· Master is desk or wall mountable. LAF-20CA can be rack mounted in RMK-01 rack mount kit.
  LAF-20C can be rack mounted in RMK-03 rack mount kit. 
· 20- and 40-call add-on selectors available, with LA-40AS rack mountable with RMK-02.NAMES & FUNCTIONS:
1.  Handset
2.  Power indicator
3.  Microphone
4.  Speaker
5.  Terminal Block
6.  OFF button
7.  Selector button
8.  Power switch
9.  Voice volume control
10. Call tone volume control
11. All Call button
12. TALK button
13. Occupied LED
14. OFF LED
15. Directory card
16. Station selector LED
LAF-20CA (pictured)
Type F
92101  0705 
						

							Individual Components for System:
LAF-20C 20-call console-style master station 
LAF-20CA 20-call console-style master station with handset
LAF-40C 40-call console-style master station 
LAF-40CA 40-call console-style master station with handset
LA-20AS 20-call Add-on Selector 
LA-40AS 40-call Add-on Selector 
PS-1225UL 12V DC, 2.5A Power Supply. One per system, or
one per BG-10C when All Call/Music is included
(also powers intercom system)
LE-series Any sub station with LE- prefix 
LS-NVP/B Vandal proof sub station for LAF-C/CA system
SBX-NVP Surface mount box for LS-NVP
SA-1 Surge Arrestor (1 per 2 wires being protected) 
LAF-C TERMINAL DEFINITIONS:
+ Positive 12V DC
- Negative
1~40 Station number, establishes communication to other master or sub
C CALL, for receiving a call from another master
E Common communication
R Control for Occupied light
(R is grounded when system is occupied)
Y All Call override control of station in use during All Call
(9V DC when system is in All Call mode)
P1 All Call activation control
(10V DC when All Call is activated)
P2, P3  Audio output for All Call initiation
(Voice transmit from master initiating All Call)
X1~X8 Connection for add-on selector (Type E)
Remove X2/X3 jumper when add-on selector is used. 
WIRING & INSTALLATION:
Before Installation:
·  Make sure you have the proper power supply(ies) and all necessary and compatible equipment for the system.
·  All Call and/or background music are optional features which require additional equipment.  See notes below.
·  Lay out your system in advance, assigning station numbers for all sub station locations.
·  Surge protection for the intercom equipment is strongly recommended.  Add SA-1 surge arrestors for the power       
supply, plus one per two wires connected to the master station.  See diagram on page 3.
Wire:
·  Shielded wire is recommended.  Use the proper gauge for the distance being run.
·  Wiring between masters must be a multi-conductor cable.  If more than one cable is used to connect masters, 
the E, C, and number terminal wires must be in the same jacketed cable.  If necessary, run multiple E 
wires, one in each cable.
Wiring Method:
·  Run intercom cables at least 20 away from all AC wiring, fluorescent lights, dimmer switches, and other 
electrical or electronic devices.  Wiring can cross AC wires at 90 degrees.
·  Sub stations may be homerun to the nearest master station, or daisy-chained.  If daisy-chained, include 2 
common wires plus one individual wire per station on the run.  
·  In a SINGLE MASTER SYSTEM ONLY: Subs can be wired with 2 conductors homerun.  Jumpers between E 
and - must be attached on all subs and at the master.
Intercom Locations:
·  Do not install intercoms near dimmer or light switches, or other electrical wall devices.
·  To prevent feedback, do not place sub stations back-to-back on a common wall. 
All Call and Background Music:
·  The BG-10C adaptor and PS-1225UL power supply are required for each group of 11 stations to receive All Call 
and music. This equipment should be installed in an equipment room or in a cabinet. Capacitors (NP-25V) are 
required for each sub station on the system. See wiring diagram on page 5 for installation information.
Pg. 2
COMPONENTS & WIRING
X4X3 X2 X1 E E E E - +
X8 X7 X6 X5 P3 P2 P1 Y R C
12 3 4 5 6 7 8 9 10
11 12 13 14 15 16 17 18 19 20
LAF-20C/CA terminal block
JUMPERS:
In multi-master system, remove E/- jumper at master and 
sub stations.
When add-on selector is included, remove X2/X3 jumper.
INTERNAL CONTROLS:
VOX. SENSITIVITY:  Potentiometer is located inside unit 
behind handset.  Adjust for sensitivity of VOX circuit.
CALL TONE WHILE MONITORING:
On the main PC board, there is a jumper labeled W1.  
With this in place, the incoming call tone will be muted if 
any master in the system is in the Occupied mode. If call 
tone is desired while Occupied, cut W1 jumper. 
TRANSMITRECEIVE 
						

							3a.  SINGLE MASTER SYSTEM, NO ALL CALL
1
2
3
4
5
~
20
E
E
E
E
-
C
R
Y
P1
P2
P3
+
- LAF-20C
+
-
PS-1225UL
LE-A
1
E
-LE-A
LE-D
Pg. 3
3b.  DUAL MASTER SYSTEM WITH MASTER-TO-MASTER COMMUNICATION
1
E
-
1
E
-
LE-D
1
E
-
NOTES:  
Two wiring method can be used:
1.  2 conductor homerun to each sub station from the master. 
(Single master system only.)
2.  Run multi-conductor wire in a daisy-chained fashion with 2 
common wires (E & -) plus one individual wire per station on the run.    
     Remove jumpers between E & - when daisy-chained method is used. 
3.  To protect system from power surge, install SA-1 arrestors at master 
station.  One SA-1 is required for every two wires connected to master.
1
2
3
~
19
E
-
C
20
R
Y
P1
P2
P3
+
- LAF-20CA
+
-PS-1225UL
LE-DA
1
E
-LE-DA
LE-DA
1
E
-
1
E
-LE-DA
1
E
- LAF-20CA
1
2
3
~
19
E
-
20
C
R
Y
P1
P2
P3
+
-
Master-to-master 
communication is shown 
on channel 20 of each 
master.
Y, P1, P2, P3 
terminals used only if 
All Call Adaptors are 
included.
WIRING DIAGRAMS
WIRING NOTE:
The following sub stations 
are wired as shown above:
  · LE-A, LE-AN
  · LE-B, LE-BN
  · LE-D, LE-DA
Remove 
E/- jumpers
SA-
1
SA-
1
SA-1 for optional
surge protection
(See note #3.)
SA-
1
All E terminals are 
common internally.
RY-ACRedBlk
WhtYellowTo external signalling device and power
(E.g. Station #19 will actvate ext. device 
when it calls in to master.) RY-AC for external signalling 
when sub calls 
						

							WIRING DIAGRAMS
3c.  THREE MASTER STATIONS WITH SUBS WIRED TO DIFFERENT MASTERS
+
-
PS-1225UL
LS-NVP
Red
Blk
Grn LAF-40CA
1
2
3
~
37
E
-
C
39
40
R
Y
P1
P2
P3
+
-LAF-40CA1
2
3
~
37
E
-
38
C
40
R
Y
P1
P2
P3
+
-1
2
3
~
37
E
-
38
39
C
R
Y
P1
P2
P3
+
- LAF-40CA
NOTE:
When wiring LS-NVP 
subs with two wires, 
black and green wires 
are tied together at sub, 
and E and - terminals 
are jumpered at master. LS-NVPRed
Blk
Grn LS-NVP
Red
Blk
Grn LS-NVP
Red
Blk
Grn
Master-to-master 
communication
3d.  MASTER STATION WITH ADD-ON SELECTOR
1
2
3
~
20
E
-
R
X1
X2
X3
X4
X5
X6
X7
X8
+
- LAF-20CA
+
-
PS-1225UL
LE-D
1
E
-LE-D
LE-D
1
E
-
1
E
- LA-40AS
1
2
3
~
40
WIRING NOTE:
The following sub stations 
are wired as shown above:
  · LE-A, LE-AN
  · LE-B, LE-BN
  · LE-D, LE-DA Blk
Yel
Org
Gry
Brn
Red
Wht
Grn
Wiring from
Add-on Selector LE-DA
1
E
-
Pg. 4 Remove 
E/- jumpers
LE-DA
1
E
-
NOTE:
LA-20AS wires 
the same as 
shown here. 
						

							Pg. 5
WIRING DIAGRAMS
+
-PS-
1225UL
3e.  SINGLE MASTER SYSTEM WITH ALL CALL
1
2
3
~
10
11
12
~
20
C
E
-
+
R
Y
P1
P2
P3 LAF-20CA
LE-BN
1
E
-LE-BN
LE-BN
1
E
-
1
E
-LE-BN
1
E
- BG-10C #1
BG-10C #2
1
2
~
10
E
-
+
R
Y
P1
P2
P3
+
-
R
E
L
E
NP-25VNP-25V
+
-PS-
1225UL
LE-BN
1
E
-LE-BN
1
E
-
DC IN
NOTES:
1.  Any LE- or LS- series sub station can be used.
2.  Capacitor for All Call is Aiphone model NP-25V: 33µfd, 25V, non-polarized.
     Capacitor must be inserted in series between BG-10C and the number terminal on the master station that is 
wired to a standard sub station.
3.  Background music can be distributed throughout the system via the BG-10C(s).  Music source must provide 
an AUX (10K ohm) output.   Music is distributed to the master station through the C terminal, showed 
wired to 11 above.
4.  Each BG-10C can provide music and/or All Call to as many as 11 sub or master stations.  Include as many 
adaptors and power supplies as necessary to provide enough outputs to the stations in the system.
5.  Do not connect + terminal between multiple BG-10C adaptors.  
AUX
1
2
~
10
11
E
-
+
R
Y
P1
P2
P3
+
-
R
E
L
EDC IN
AUX
To AUX (10K 
ohm) output of 
music source 
						

							OPERATIONS:
* POWER SWITCH MUST BE ON FOR THE SYSTEM TO BE OPERATIONAL.
Receiving a call from a sub station:
1.  Sub station calls in with mono-electronic tone, heard as long as call button at sub is depressed. 
2.  LED light corresponding to calling station will light at master, staying on approximately 20 seconds.
3.  Depress station button with lit LED.
4.  Press TALK button to speak, and release to listen.  With handset model (LAF-CA), speak to sub station 
privately with voice actuated (VOX) handset.  TALK button is also functional on LAF-CA models.
5.  Press OFF button to the left of the station selector button when the call is concluded.
Calling a sub or master station:
1.  Depress station number of the location you wish to call.
2.  Press TALK to speak, and release to hear reply, or use handset.
3.  If you wish to send a pre-announce tone to the called station, press the TALK and ALL CALL buttons 
simultaneously.  A mono-electronic tone will be heard at the called station.
4.  Press OFF button to the left of the station selector button when the call is concluded.
Receiving a call from another master station:
1.  When one master calls another master, no station LEDs light up, and the responding master answers back 
hands free.  The calling master uses the TALK button to speak.
2.  The calling master can use the handset, but the responding master must speak hands free.
3.  The occupied lamp will be on while the initiating master has a station selected.
4.  The responding master should not press any buttons to respond to another masters call.       
Initiating an ALL CALL from the master station, and features of the BG-10C:
1.  Press and hold the black ALL CALL button, then make an announcement.
2.  To conclude, simply release the button.
3.  All Call is a one way outgoing announcement only.  If a station wishes to respond, they must press their call 
button, and the master station can then answer the call as described above.
4.  If background music is included, the music will be heard on the system while it is not occupied.  When any 
master station selects a station to place or answer a call, the music will be muted throughout the entire 
system.
5.  If a door station is wired to the BG-10C to produce a chime, a 4-stroke chime will be heard through the 
stations selected to receive the chime (switches under plate on BG-10C).  A call from a door station can 
only be answered by a master station.
SPECIFICATIONS:
Power Source: 12V DC at master. Use one PS-1225UL per system,
or one PS-1225UL per BG-10C when All Call is included. 
Communication Output: 800mW at 20 ohms (receive); 500mW at 20 ohms (transmit)
Communication: Push-to-talk, release-to-listen (TALK button), or VOX handset at master.
Hands free at sub station.
Calling: Master to sub or other master:  By voice (TALK) or tone (TALK & ALL CALL simult.)
Sub to master:  Call button on sub activates tone and LED at master, 
remaining lit for approximately 20 seconds. 
Wiring: 2 conductors homerun to sub station (1-Master system only), 3-conductor, or loop multi-
conductor with 2 common + 1 individual wire per sub station on wire run.  
Shielded cable is recommended.
Single Master Systems without BG-10C:
Aiphone #822202, 2 cond. 22AWG; #821802, 2 cond. 18AWG  
Multi-Master System (Can also be used in a single master system or systems with BG-10C):
#822203, 3 cond. 22AWG; #822206, 6 cond. 22AWG.
LAF-C to ea. BG-10C:  Aiphone #822220, 20 cond. 22AWG.
Wiring Distance: 650 with 22AWG; 1,600 with 18AWG. 
Dimensions:   LAF-20C:  10-1/4 x 13-1/2 x 5-1/2.   LAF-20CA:  10-1/4 x 17-3/4 x 5-1/2
 (H x W x D) LAF-40C:  10-1/4 x 19-1/2 x 5-1/2. LAF-40CA:  10-1/4 x 23-1/2 x 5-1/2
LA-20AS:  10-1/4 x 7 x 5-1/2.           LA-40AS:  10-1/4 x 12-7/8 x 5-1/2.  
OPERATIONS & SPECIFICATIONS
Pg. 6 
						

							TROUBLESHOOTING GUIDE
PROBLEM
1.   No call tone or LED when sub calls master.
2.   Call tone works, but no communication, or 
communication works, but no call tone.
3.  Call tone is too loud or too quiet.
4.   Master stations cannot call each other.
5.   LED lights dont light up when calling master-to-
master.
6.   Occupied light is always on.
7.   When subs call in, multiple LEDs light up.
8.   All Call doesnt work.
9.   All call doesnt work, but adaptors are included.
10. When All Call is made, all station LEDs light up.
11. Feedback is heard between intercom stations in   
adjacent rooms.
12. System has AC hum when listening to another 
station from a master station.
SOLUTION
1.   Make sure jumper is installed between E & -
terminals at the master and all sub stations (in 2-wire 
configuration).
2.  Same as #1 in 2-wire system.  In 3 wire system, 1 & 
E are for communication, and 1 & - are for call-in.  Check 
continuity and connection of wires.
3.  Call tone volume control is located on main PC board 
under select switch panel (white 3-pos. switch).  Level is 
set to maximum.  Move to mid or low position.
4.  The C terminal on the master station means 
CALL, and provides master-to-master communication.  
Make sure the C of one master is connected to a 
designated station # on another master.
5.  Station LEDs only light when a sub station calls.  
Responding master answers hands free, therefore not 
having to select a station.
6.  Make sure all black OFF buttons on master(s) are off 
(pressed down).  Check R wire for short to ground.  If 
occupied light remains lit with R wire disconnected 
from master, internal damage has occured, and the unit 
must be sent in for repair.
7.  Make sure station number wires arent shorted 
together.  Remove all jumpers between E & - in multi-
master or 3-wire system.  Test master by taking wires off 
# terminals, then momentarily shorting # terminal to -
(neg).  If more than one light comes on, internal damage 
has occured, and the master must be repaired.
8.  All Call is an optional feature requiring a BG-10C and 
PS-1225UL for every 10-11 stations in the system.  
Make sure adaptors are wired properly.  See diagram 
#3e.
9.  Check connection of P1, P2, P3 terminals between 
master and BG-10Cs.  P1 should read at least 10V DC 
when All Call button is pressed.  Voice is carried on P2, 
P3 wires.
10.  If single-call sub stations are used, NP-25V 
capacitors must be installed as shown on diagram #3e.
11.  Intercom stations should not be mounted back-to-
back on a common wall.  Separate them by at least two 
feet, or on separate walls if possible.  Adjust voice 
volume control to eliminate feedback.
12.  Intercom wiring must be at least 20 away from any 
AC wiring, fluorescent lights dimmer switches, or other 
AC devices.  Cross at 90 degrees when necessary.  If 
shielded wire was used, tie all shields together and 
ground at one end to an earth ground.  If noise persists, 
isolate source of noise and separate the intercom station 
and wiring from the source.
Pg. 7 
						

							PRECAUTIONS & WARRANTY
CAUTION
* Do not connect any AC wires to any terminal on any unit, as fire or unit damage may occur.  Connect only 
specified power source on +, - terminals.
* Do not install more or different power sources than specified for the system.
* Do not attempt to install or connect wires on LAF-C system while the systems power supply is plugged in.
* LAF-C masters and related equipment, unless specified as weather resistant, are designed for indoor use only. 
Door stations (LE-D, LE-DA, LE-DL) may be installed outdoors.
IMPORTANT
* There is no need to disassemble the equipment for installation.  Call tone volume and handset vox sensitivity 
adjustments are inside the master station, and are the only controls to be accessed inside the unit.  Do not access 
the PC boards inside the units unless properly qualified.
* Any other manufacturers products installed with the system (power supply, external signalling device, etc.) are not 
covered under Aiphones warranty.
* Do not mount LAF-C equipment in the following places, as it may cause the system to malfunction:
- High or extreme cold temperature areas: under direct sunlight, near equipment that varies in temperature,  in 
front of air conditioner, inside a refrigerated area, etc.
- Places subject to moisture or humidity extremes.
- Places subject to environmental conditions, such as dust, oil, chemicals, salt, etc.
* LAF-C units are electronic devices, which must not be subjected to water or any other liquid.
* Severe weather conditions, such as lightning storms, may cause damage to LAF-C equipment.  We recommend 
that power surge protection be installed to minimize potential component level damage.
- Install the SA-1 surge arrestor as shown to protect the power supply from a surge.  
- Additional SA-1 surge arrestors should be installed on all communication lines (one SA-1 for every two wires 
connected to master.)  See diagram #3a.
+
-+
-
SA-
1
Earth Ground PS-1225ULLAF-C Master
Toll Free Technical Support
1-800-692-0200
TOLL FREE FAX LINE: 
1-800-832-3765
E-Mail: [email protected] Aiphone Communication Systems
1700 130th Ave. N.E.
Bellevue, WA  98005
(425) 455-0510
FAX (425) 455-0071
Pg. 8
LAF-C Instr.
 Lit #92101
0705JS
WARRANTY
Aiphone warrants its products to be free from defects of material and workmanship under normal use 
and service for a period of one year after delivery  to the ultimate user and will repair free of charge or 
replace at no charge, should it become defective upon which examination shall disclose to be defective and 
under warranty.  Aiphone reserves unto itself the sole right to make the final decision whether there is a 
defect in materials and/or workmanship; and whether or not the product is within the warranty.
This warranty shall not apply to any Aiphone product that has been subjected to misuse, neglect, 
accident, or to use in violation of instructions furnished, nor extended to units which have been repaired or 
altered outside of the factory.  This warranty covers bench repairs only, and any repairs must be made at the 
shop or place designated in writing by Aiphone.
Aiphone will not be responsible for any costs incurred involving on-site service calls.