Aiphone installation manual Connection, AI-900MSand AI-MS900connection

[Connection]

Use 2 twisted pair cables with a modular jack fitted at each one end to connect the AI-MS900 to the AI-900MS. Refer to the following table for the maximum recommended cable length between the two.

Cable type	AWG24 (0.52 mm)	AWG22 (0.65 mm)	AWG20 (0.82 mm)
Distance	0.9 km	1.5 km	2.3 km

Connect as shown below.

AI-900MS and AI-MS900 connection

Ferrite clamp *

2 twisted pair cables

LINE Ferrite clamp *

1234 2 twisted pair cables

AI-900MS
CN1	Line 1
	for master station
CN2

CN3	Line 2
	for master station

1

2

3

4

1

2

3

4

LINE

CN4

1234

Front view of the circuit board

*Mount the ferrite clamp (supplied with the AI-900MS card) on the cable in a way that the cable is looped one turn as illustrated. (This countermeasure is for complying with the CE marking and FCC requirements.)

AI-900MS card

Ferrite clamp

SFC-10

Note

When using a shielded cable, connect the shielded wire to the "FG" terminal of the exchange main frame. Also, connect the unused cables, if included in a bundle of cables, to the same terminal.

24