Aiphone LAF-20CA Manuale Utente

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

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 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-AC

Red

Blk

Wht

Yellow

To external signalling device and power
(E.g. Station #19 will actvate ext. device
when it calls in to master.)