Fujitsu Airstage J-II Series - Page 571

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MAXIMUM CONNECTION OF NETWORK SEGMENT
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Network segment : divided network by signal amplier
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In the following case, signal amplier is required.
(1) When the total length of the transmission line exceeds 1,640 ft. (500 m)
(2) When the number of total unit*1 exceed over 64 units.
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When a signal amplier is installed, network is divided into two network segments.
Network segments mean divided block which has been connected with signal amplier within
above condition.
In a network segment(NS), divided by a signal amplier, have to keep the following limitation.
Segment inside Limitation
Transmission line 1,640 ft. (500 m) or less
Number of unit *1 (See the next page) 64 or less
Terminal resistor 1
1 2 3 4 5 6 25
1 2 3 4
1 2 3
1 2 3 4 5 62
4
62
62
64
64
64
63
63
63
34
26 27 28 29 30 31 32 33
Network
segment 1
Signal
Amplier
Signal
Amplier
Transmission line : within 1,640 ft.(500 m)
64units
64units
64units
Signal
Amplier
Network
segment 2
Network
segment 3
Network
segment 4
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Caution
VRF network system should keep both of number of unit and wiring length.
When system exceeds either number of unit or wiring length, system should be devided.
Di󰀨erent VRF series may not coexist within the same network.
- (06 - 07) -
SYSTEM DESIGN SYSTEM DESIGN